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| WoS | SCOPUS | Document Type | Document Title | Abstract | Authors | Affiliation | ResearcherID (WoS) | AuthorsID (SCOPUS) | Author Email(s) | Journal Name | JCR Abbreviation | ISSN | eISSN | Volume | Issue | WoS Edition | WoS Category | JCR Year | IF | JCR (%) | FWCI | FWCI Update Date | WoS Citation | SCOPUS Citation | Keywords (WoS) | KeywordsPlus (WoS) | Keywords (SCOPUS) | KeywordsPlus (SCOPUS) | Language | Publication Stage | Publication Year | Publication Date | DOI | JCR Link | DOI Link | WOS Link | SCOPUS Link |
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| ○ | Meeting Abstract | Harnessing Accelerator Mass Spectrometer (AMS) and C-14 micro-tracing for the long-term in vivo behavior evaluation of polystyrene (PS) microplastics via inhalation exposure | Kwon, M.; Choi, S.; Jang, J.; Seo, J.; Kim, K.; Song, J.; Lee, I. | Korea Inst Radiol & Med Sci KIRAMS, Seoul, South Korea; Kyungpook Natl Univ, Dept Appl Chem, Daegu, South Korea | EUROPEAN JOURNAL OF NUCLEAR MEDICINE AND MOLECULAR IMAGING | EUR J NUCL MED MOL I | 1619-7070 | 1619-7089 | 51 | SCIE | RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING | 2024 | 7.6 | 4.5 | 0 | English | 2024 | 2024-09 | 바로가기 | 바로가기 | |||||||||||||||||
| ○ | Meeting Abstract | In Vivo Behavior Study of Chemical in Household Products in Rats using Preclinical Techniques in Nuclear Medicine: [Cu⁻⁶⁴]Cu-DOTA-Branched polyethylenimine ([Cu⁻⁶⁴]Cu-DOTA-BPEI) | Choi, S.; Park, J.; Jeong, J.; Jang, J.; Kwon, M.; Park, J.; Oh, S.; Park, C.; Jeon, J.; Lee, I. | Korea Inst Radiol & Med Sci KIRAMS, Seoul, South Korea; Kyungpook Natl Univ, Dept Appl Chem, Daegu, South Korea | EUROPEAN JOURNAL OF NUCLEAR MEDICINE AND MOLECULAR IMAGING | EUR J NUCL MED MOL I | 1619-7070 | 1619-7089 | 51 | SCIE | RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING | 2024 | 7.6 | 4.5 | 0 | English | 2024 | 2024-09 | 바로가기 | 바로가기 | |||||||||||||||||
| ○ | Meeting Abstract | In Vivo Biodistribution and Mass Balance Studies of [C-14]C12-Benzylalkyldimethylammonium chloride ([C14]C12-BKC) in rats via intranasal administration | Kim, D.; Jeong, J.; Choi, S.; Jang, J.; Kwon, M.; Jeon, J.; Lee, I. | Korea Inst Radiol & Med Sci KIRAMS, Korea Radioisotope Ctr Pharmaceut KRICP, Seoul, South Korea; Kyungpook Natl Univ, Dept Appl Chem, Daegu, South Korea | EUROPEAN JOURNAL OF NUCLEAR MEDICINE AND MOLECULAR IMAGING | EUR J NUCL MED MOL I | 1619-7070 | 1619-7089 | 51 | SCIE | RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING | 2024 | 7.6 | 4.5 | 0 | English | 2024 | 2024-09 | 바로가기 | 바로가기 | |||||||||||||||||
| ○ | ○ | Article | Low-Power Charge Trap Flash Memory with MoS2 Channel for High-Density In-Memory Computing | With the rise of on-device artificial intelligence (AI) technology, the demand for in-memory comptuing has surged for data-intensive tasks on edge devices. However, on-device AI requires high-density, low-power memory-based computing to efficiently handle large data volumes. Here, this study proposes a reliable multilevel, high gate-coupling ratio memory device with MoS2 channel tailored for high-density 3D NAND Flash-based in-memory computing. The MoS2 channel, featured by its small bandgap and high-mobility, facilitates reliable memory window of approximately 8 V thanks to erase operation through hole injection. This not only suppresses vertical charge loss but also alleviates the burden on voltage generator circuits, indicating the suitability of MoS2 as channel material for 3D NAND Flash architecture. Additionally, a low-k (approximate to 2.2) tunneling layer deposited via initiated chemical vapor deposition increases the gate-coupling ratio, thereby reducing the operating voltage. Utilizing Au nanoparticles as the charge storage layer, MoS2 memory devices show synaptic plasticity with 6-bit, endurance (10(4) cycles), read disturbance (10(5) cycles), and retention times (10(5) s). Furthermore, device-to-system simulations for neural networks based on MoS2-memory devices have successfully achieved a fingerprint recognition of 95.8%. These results provide the foundation to develop multi-bit MoS2-memory devices for AI accelerators and 3D NAND Flash memory. | Kim, Yeong Kwon; Park, Sangyong; Choi, Junhwan; Park, Hamin; Jang, Byung Chul | Kyungpook Natl Univ, Sch Elect & Elect Engn, 80 Daehakro, Daegu 41566, South Korea; Sungkyunkwan Univ, Dept Semicond & Display Engn, Suwon 16419, South Korea; Dankook Univ, Dept Chem Engn, 152 Jukjeon ro, Yongin 16890, Gyeonggi Do, South Korea; Kwangwoon Univ, Dept Elect Engn, 20 Gwangun ro, Seoul 01897, South Korea | Jang, Byung Chul/GYV-0656-2022 | 58120005900; 59607698100; 57721052400; 57188966274; 9238827900 | parkhamin@kw.ac.kr;bc.jang@knu.ac.kr; | ADVANCED FUNCTIONAL MATERIALS | ADV FUNCT MATER | 1616-301X | 1616-3028 | 34 | 40 | SCIE | CHEMISTRY, MULTIDISCIPLINARY;CHEMISTRY, PHYSICAL;MATERIALS SCIENCE, MULTIDISCIPLINARY;NANOSCIENCE & NANOTECHNOLOGY;PHYSICS, APPLIED;PHYSICS, CONDENSED MATTER | 2024 | 19 | 4.5 | 0.28 | 2025-05-07 | 3 | 3 | 3D NAND flash; in-memory computing; MoS2; multi-bits technology | TRANSISTOR; SYSTEM; ARRAY | 3D NAND flash; in-memory computing; MoS<sub>2</sub>; multi-bits technology | Chemical vapor deposition; Flash memory; Hole mobility; Layered semiconductors; Memory architecture; Molybdenum disulfide; NAND circuits; 3d NAND flash; Artificial intelligence technologies; Charge trap flash memory; Coupling ratios; Gate coupling; In-memory computing; Low Power; Multi-bit technology; Multi-bits; NAND Flash; Gold nanoparticles | English | 2024 | 2024-10 | 10.1002/adfm.202405670 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |
| ○ | ○ | Article | Multi-Dimensional Physically Unclonable Functions: Optoelectronic Variation-Induced Multi-Key Generation from Small Molecule PN Heterostructures | In this era of demanding invulnerable security systems against the threat of hacking, physically unclonable functions (PUFs), especially in which can spawn multiple security keys within a single device, has gained attention. This investigation explores the multi-key generable PUF devices employing organic small molecules, specifically C8-BTBT and PTCDI-C13. The variation stems from the formation of irregular PN junctions, haphazardly configured grain boundaries of C8-BTBT. A comprehensive analysis including scanning electron microscopy (SEM), atomic force microscopy (AFM), kelvin probe force microscopy (KPFM), impedance spectroscopy (IS), and optical simulation, has been substantiated the underlying mechanisms. Exploiting the photo-responsive characteristics within the light wavelength spectrum of 660 and 530 nm, alongside the electrical characteristics, the capability to generate a total of 30 distinct multi-security keys in a single device is been successfully. These keys, distinguished by variable parameters such as voltage, light wavelength, and the calculated photo-to-dark current ratio (PDCR), manifest novel quantitative and qualitative dimensions in security protocol customization. Inter-Hamming distance and entropy of these cryptographic keys exhibit commendable averages of 51.9-53.1%, and 0.81, respectively. Moreover, a noteworthy average bit-aliasing mean value of 51.9%, derived from four distinct batches, underscores the pragmatic feasibility of the proposed conceptual framework for PUF devices. This study investigates the creation of multi-key PUF devices using organic small molecules of C8-BTBT and PTCDI-C13. The fabrication process involves establishing irregular PN junctions with randomly configured grain boundaries of C8-BTBT. Based on photo-responsive characteristics within the 660 and 530 nm light spectrum, combined with electrical properties, this work successfully generated 30 distinct multi-security keys in a single device. image | Shin, Jihyun; Ko, Raksan; Park, Taehyun; Kim, Yeong Jae; Jang, Byung Chul; Yoo, Hocheon | Gachon Univ, Dept Elect Engn, 1342 Seongnam Daero, Seongnam 13120, South Korea; Gachon Univ, Dept Chem & Biol Engn, 1342 Seongnam Daero, Seongnam 13120, South Korea; Korea Inst Ceram Engn & Technol, Ceram Total Solut Ctr, Icheon 17303, South Korea; Kyungpook Natl Univ, Sch Elect & Elect Engn, 80 Daehakro, Daegu 41566, South Korea | Yoo, Hocheon/ABZ-6637-2022; Jang, Byung Chul/GYV-0656-2022 | 57954492100; 58555442600; 57211288149; 57830611600; 9238827900; 56637576900 | bc.jang@knu.ac.kr;hyoo@gachon.ac.kr; | ADVANCED FUNCTIONAL MATERIALS | ADV FUNCT MATER | 1616-301X | 1616-3028 | 34 | 30 | SCIE | CHEMISTRY, MULTIDISCIPLINARY;CHEMISTRY, PHYSICAL;MATERIALS SCIENCE, MULTIDISCIPLINARY;NANOSCIENCE & NANOTECHNOLOGY;PHYSICS, APPLIED;PHYSICS, CONDENSED MATTER | 2024 | 19 | 4.5 | 1.41 | 2025-05-07 | 4 | 6 | machine learning attack; multi-dimensional PUF; multi-key; optoelectronics; organic semiconductors; PN junction; security devices | INTERNET; PUF; AUTHENTICATION; SECURITY; THINGS | machine learning attack; multi-dimensional PUF; multi-key; optoelectronics; organic semiconductors; PN junction; security devices | Grain boundaries; Machine learning; Personal computing; Scanning electron microscopy; Semiconductor junctions; Light wavelengths; Machine learning attack; Machine-learning; Multi dimensional; Multi-dimensional physically unclonable function; Multi-key; Physically unclonable functions; PN junction; Security devices; Security key; Hamming distance | English | 2024 | 2024-07 | 10.1002/adfm.202314949 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |
| ○ | ○ | Article | N-Heterocyclic Carbene-Graphene Nanotransistor Based on Covalent Bond for Ultrastable Biosensors | Fatal pathogenic organisms have been detected by various point-of-care tests (PoCTs) in clinical samples. PoCTs based on portable electrical devices are able to detect organisms in simple and rapid method. Although electrical PoCT devices show ultra sensitivity when detecting pathogens in standard samples, their industrialization has been limited due to low reproducibility, sensitivity, and specificity, resulting from nonspecific binding issues by media. In this research, a perpendicular N-heterocyclic carbene self-assembled monolayer (NHC-SAM) conjugated on graphene micropattern field-effect transistors (NGMFETs) is first demonstrated for monitoring pathogens. Two single bonds of NHCSAM on GM are investigated via density functional theory (DFT) and surface analyses. Bioreceptors are conjugated on the side gate-modulated NGMFET for ultra-stable on-site detection. The side-gated BNGMFETs system displayed remarkable performance in the detection of the following: i) SARS-CoV-2 spike protein S1 (limit of detection (LOD): approximate to 10 pg mL-1) in CTM, ii) O. tsutsugamushi Ab (LOD: approximate to 1 pg mL-1), and iii) E. coli (LOD: 10 degrees CFU mL-1) in serum. Compared to commercial methodology, the platform presents 102 times higher LODs towards those pathogens in clinical samples with higher reproducibility. Based on these results, side-gated BNGMFETs can be utilized as universal PoCT during pandemics. Interfacial compound, N-heterocyclic carbene, is introduced for the development of an ultrastable biosensor by forming a self-assembly monolayer onto graphene micropatterned field-effect transistor. The bioreceptor-integrated platforms are used for the diagnosis of various organisms such as viruses and bacteria, which shows excellent performances and high specificity including various interference materials. This biosensor platform can be utilized for rapid diagnosis technology in the next pandemic. image | Kim, Kyung Ho; Seo, Sung Eun; Park, Seon Joo; Kim, Jinyeong; Park, Chul Soon; Le, Thanh-Hai; Lee, Chang-Seop; Kim, Yu Kyung; Kim, Hye-Yeon; Jun, Sangmi; Kwak, Jisung; Lee, Yeon Kyung; Yoon, Hyeonseok; Song, Hyun Seok; Kwon, Oh Seok | Korea Res Inst Biosci & Biotechnol KRIBB, Immunotherapy Res Ctr, Daejeon 34141, South Korea; Korea Res Inst Biosci & Biotechnol KRIBB, Infect Dis Res Ctr, Daejeon 34141, South Korea; Chonnam Natl Univ, Sch Polymer Sci & Engn, Gwangju 61186, South Korea; Jeonbuk Natl Univ, Jeonbuk Natl Univ Hosp, Med Sch, Biomed Res Inst,Dept Internal Med, Jeonju 54986, South Korea; Kyungpook Natl Univ, Sch Med, Dept Clin Pathol, Daegu 41944, South Korea; Korea Basic Sci Inst KBSI, Ctr Res Equipment, Cheongju 28119, South Korea; Korea Inst Sci & Technol KIST, Sensor Syst Res Ctr, Seoul 02792, South Korea; Korea Univ, Dept Chem & Biol Engn, Seoul 02841, South Korea; Korea Univ, Dept Biomicrosystem Technol, Seoul 02841, South Korea; Sungkyunkwan Univ, SKKU Adv Inst Nanotechnol SAINT, Suwon 16419, South Korea; Sungkyunkwan Univ, Dept Nano Sci & Technol, Suwon 16419, South Korea; Sungkyunkwan Univ SKKU, Dept Nano Engn, Suwon 16419, South Korea | Lee, Chang-Seop/IQU-1791-2023; Yoon, Hyeonseok/B-2855-2015; Le, Thanh-Hai/ABE-1049-2022 | 57226848520; 57208651527; 36165743800; 57207438329; 57188864329; 57194054661; 26423010200; 9237571900; 56002614500; 56019810800; 57343406700; 57420872900; 7402990226; 58168289300; 7402195808 | hyoon@chonnam.ac.kr;hssong@kist.re.kr;oskwon79@skku.edu; | ADVANCED FUNCTIONAL MATERIALS | ADV FUNCT MATER | 1616-301X | 1616-3028 | 34 | 21 | SCIE | CHEMISTRY, MULTIDISCIPLINARY;CHEMISTRY, PHYSICAL;MATERIALS SCIENCE, MULTIDISCIPLINARY;NANOSCIENCE & NANOTECHNOLOGY;PHYSICS, APPLIED;PHYSICS, CONDENSED MATTER | 2024 | 19 | 4.5 | 3.11 | 2025-05-07 | 8 | 13 | bioelectronics; biosensors; interfacial chemistry; N-heterocyclic carbene; pathogenic diseases | FIELD-EFFECT TRANSISTOR; ORIENTIA-TSUTSUGAMUSHI; RAMAN-SPECTROSCOPY; FUNCTIONALIZATION; CHEMISTRY | bioelectronics; biosensors; interfacial chemistry; N-heterocyclic carbene; pathogenic diseases | Density functional theory; Escherichia coli; Field effect transistors; Graphene; Graphene transistors; Nanotransistors; Organic compounds; Bioelectronic; Clinical samples; Electrical devices; Limit of detection; N-heterocyclic carbenes; Nano transistors; Pathogenic disease; Pathogenic organisms; Point of care; SIMPLE method; Biosensors | English | 2024 | 2024-05 | 10.1002/adfm.202310377 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |
| ○ | ○ | Article | Nickel Nanoplates Enclosed by (111) Facets as Durable Oxygen Evolution Catalysts in Anion Exchange Membrane Water Electrolyzers | The long-term stability of Ni-based catalysts, employed in the anode of anion exchange membrane water electrolyzers (AEMWE), has been a persisting concern. In this work, through a simple and powerful electrochemical anodization process, vertically aligned beta-NiOOH atomic sheets (vertical-beta-NiOOH) grown on Fe-doped Ni nanoplates (FeNi nanoplates) as a solution are offered. This innovative electrocatalyst demonstrates sustained stability of constant current density for over 120 d during the oxygen evolution reaction.The zero-gap AEMWE cell harnessing the anodized FeNi nanoplates achieves a remarkable current density of 2.26 A cm-2 at 1.80 V with an energetic efficiency of 85.1%. It is anticipated that the electrochemically produced highly active, stable Ni-based nanostructures demonstrate the potential in pushing the boundaries of AEMWE technology. This study presents anodized FeNi nanoplates with vertically aligned beta-Ni oxyhydroxide (beta-NiOOH) atomic sheets, facilitating the creation of highly active Ni4+ species. These Ni4+ rich beta-NiOOH sheets enable exceptional oxygen evolution performance in anion exchange membrane water electrolyzers. image | Kabiraz, Mrinal Kanti; Kim, Jeonghyeon; Lee, Hye Jin; Park, Saehyun; Lee, Young Wook; Choi, Sang-Il | Kyungpook Natl Univ, Green Nano Mat Res Ctr, Dept Chem, Daegu 41566, South Korea; Gyeongsang Natl Univ, Dept Chem Educ, Jinju 52828, South Korea; Gyeongsang Natl Univ, Res Inst Nat Sci, Jinju 52828, South Korea | Choi, Sangil/N-7571-2013; Choi, Sang-Il/N-7571-2013; Kabiraz, Mrinal/AAE-6381-2020 | 57201400780; 57194560892; 56569175200; 59164522400; 55716174300; 56167600800 | sichoi@knu.ac.kr; | ADVANCED FUNCTIONAL MATERIALS | ADV FUNCT MATER | 1616-301X | 1616-3028 | 34 | 46 | SCIE | CHEMISTRY, MULTIDISCIPLINARY;CHEMISTRY, PHYSICAL;MATERIALS SCIENCE, MULTIDISCIPLINARY;NANOSCIENCE & NANOTECHNOLOGY;PHYSICS, APPLIED;PHYSICS, CONDENSED MATTER | 2024 | 19 | 4.5 | 2.26 | 2025-05-07 | 10 | 9 | electrocatalysis; nickel nanosheet; oxygen evolution reaction; water electrolysis | ELECTROCATALYSTS; PERFORMANCE; EFFICIENT | electrocatalysis; nickel nanosheet; oxygen evolution reaction; water electrolysis | Alkaline fuel cells; Binary alloys; Electrocatalysis; Electrocatalysts; Electrolytic cells; Ion exchange membranes; Iron alloys; Nanosheets; Oxygen; Anion exchange; Electrolyzers; Exchange membranes; Fe-doped; Long term stability; Nanoplates; Nickel nanosheet; Oxygen evolution; Water electrolysis; ]+ catalyst; Nickel | English | 2024 | 2024-11 | 10.1002/adfm.202406175 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |
| ○ | ○ | Article | PINK1 restrains periodontitis-induced bone loss by preventing osteoclast mitophagy impairment | The oral colonization of periodontal pathogens onto gingival tissues establishes hypoxic microenvironment, often disrupting periodontal homeostasis in conjunction with oxidative stress. The association between reactive oxygen species (ROS) and osteolytic periodontitis have been suggested by recent studies. PTEN-induced kinase 1 (PINK1), a mitochondrial serine/threonine kinase, is an essential protein for mitochondrial quality control as it protects cells from oxidative stress by promoting degradation of damaged mitochondria through mitophagy. However, the pathophysiological roles of PINK1 in osteoclast-mediated bone loss have not been explored. Here we aimed to determine whether PINK1 plays a role in the regulation of osteoclastogenesis and alveolar bone resorption associated with periodontitis. C57BL/6 wild type (WT) and Pink1 knockout (KO) mice were subjected to ligature-induced periodontitis (LIP), and alveolar bones were evaluated by mu CT-analysis and tartrate-resistant acid phosphatase (TRAP) staining. The mu CT-analysis showed that bone volume fraction and travecular thickness were lower in Pink1 KO compared to WT mice. The number of TRAP -positive osteoclasts was markedly increased in the periodontal tissues of Pink1 KO mice with LIP. The genetic silencing or deletion of Pink1 promoted excessive osteoclast differentiation and bone resorption in vitro, as respectively indicated by TRAP staining and resorption pits on dentin slices. PINK1 deficiency led to mitochondrial instabilities as indicated by confocal microscopy of mitochondrial ROS, mitochondrial oxygen consumption rate (OCR) analysis, and transmission electron microscopy (TEM). Consequently, a significant increase in Ca2+-nuclear factor of activated T cells 1 (NFATc1) signaling was also found. On the other hand, restoration of mitophagy and autophagy by spermidine (SPD) treatment and the resolution of oxidative stress by N-acetyl-L-cysteine (NAC) treatment protected PINK1 deficiency-induced excessive generation of osteoclasts. Taken together, our findings demonstrate that PINK1 is essential for maintaining mitochondrial homeostasis during osteoclast differentiation. Therefore, targeting PINK1 may provide a novel therapeutic strategy for severe periodontitis with fulminant osteolysis. | Jang, Ji Sun; Hong, Seo Jin; Mo, Shenzheng; Kim, Min Kyung; Kim, Yong-Gun; Lee, Youngkyun; Kim, Hong-Hee | Seoul Natl Univ, Dept Cell & Dev Biol, Sch Dent, Dent Res Inst, Seoul 110749, South Korea; Kyungpook Natl Univ, Sch Dent, Dept Periodontol, Daegu 41940, South Korea; Kyungpook Natl Univ, Sch Dent, Dept Biochem, Daegu 41940, South Korea | 57800174500; 57402532200; 57201975412; 57203466621; 55622694400; 36062942200; 55766537400 | hhbkim@snu.ac.kr; | REDOX BIOLOGY | REDOX BIOL | 2213-2317 | 69 | SCIE | BIOCHEMISTRY & MOLECULAR BIOLOGY | 2024 | 11.9 | 4.5 | 7.58 | 2025-05-07 | 23 | 24 | PINK1; Osteoclast; Mitophagy; ROS; Periodontitis | MITOCHONDRIAL DYSFUNCTION; ACTIVATION; CALCIUM | Mitophagy; Osteoclast; Periodontitis; PINK1; ROS | Alveolar Bone Loss; Animals; Mice; Mice, Inbred C57BL; Mitophagy; Osteoclasts; Periodontitis; Protein Kinases; Reactive Oxygen Species; acetylcysteine; acid phosphatase tartrate resistant isoenzyme; calcium ion; NFATc1 protein; protein serine threonine kinase; PTEN induced kinase 1; reactive oxygen metabolite; spermidine; unclassified drug; protein kinase; reactive oxygen metabolite; alveolar bone; animal cell; animal experiment; animal model; animal tissue; Article; bone volume; C57BL 6 mouse; cell differentiation; confocal microscopy; controlled study; dentin; disease association; drug targeting; gene; gene deletion; gene silencing; in vitro study; knockout mouse; ligature induced periodontitis; male; micro-computed tomography; mitochondrion; mitophagy; mouse; NFATc1 signaling; nonhuman; osteoclast; osteoclastogenesis; osteolysis; oxidative stress; oxygen consumption rate; periodontal tissue; periodontitis; Pink1 gene; protein function; regulatory mechanism; signal transduction; staining; tissue slice; trabecular thickness; transmission electron microscopy; alveolar bone loss; animal; C57BL mouse; complication; genetics; metabolism; mitophagy; osteoclast | English | 2024 | 2024-02 | 10.1016/j.redox.2023.103023 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||||
| ○ | ○ | Article | Realistic Chest X-Ray Image Synthesis via Generative Network with Stochastic Memristor Array for Machine Learning-Based Medical Diagnosis | Artificial Intelligence (AI) technology has attracted tremendous interest in the medical community, from image analysis to lesion diagnosis. However, progress in medical AI is hampered by a lack of available medical image datasets and labor-intensive labeling processes. Here, it is demonstrated that a large number of annotated, realistic chest X-ray images can be generated using a state-of-the-art generative adversarial network (GAN) that exploits noise produced by stochastic in-memory computing of memristor crossbar arrays. Memristors based on polymer film with high thermal resistance can increase the stochasticity of the tunneling distance for randomly ruptured conductive filaments via excessive Joule heating, thus generating true random numbers required for creating naturally diverse images in GAN. Using StyleGAN2-adaptive discriminator augmentation (ADA), high-quality chest X-ray images with and without pneumothorax are successfully augmented while maintaining a good Frechet inception distance score. The results provide a cost-effective solution for preparing privacy-sensitive medical images and labeling to develop innovative medical AI algorithms. Artificial intelligence (AI) technology has gained attention in medical image analysis, but lack of datasets and labeling processes hinders its progress. A generative adversarial network (GAN) with 1k-bit memristor array based on poly(1,3,5-trivinyl-1,3,5-trimethyl cyclotrisiloxane) generates annotated chest X-ray images. Using StyleGAN2-ADA, high-quality images with and without pneumothorax are augmented, providing a cost-effective solution for privacy-sensitive medical images and labeling.image | Kim, Namju; Oh, Jungyeop; Kim, Sungkyu; Cha, Jun-Hwe; Choi, Junhwan; Im, Sung Gap; Choi, Sung-Yool; Jang, Byung Chul | Kyungpook Natl Univ, Sch Elect & Elect Engn, 80 Daehakro, Daegu 41566, South Korea; Korea Adv Inst Sci & Technol KAIST, Graphene 2D Mat Res Ctr, Sch Elect Engn, Grad Sch Semicond Technol, 291 Daehak Ro, Daejeon 34141, South Korea; Sejong Univ, Dept Nanotechnol & Adv Mat Engn, 209 Neungdong Ro, Seoul 05006, South Korea; Dankook Univ, Dept Chem Engn, 152 Jukjeon Ro, Yongin 16890, Gyeonggi Do, South Korea; Korea Adv Inst Sci & Technol KAIST, Graphene 2D Mat Res Ctr, Dept Chem & Biomol Engn, 291 Daehak Ro, Daejeon 34141, South Korea | Im, Sung/C-1823-2011; Jang, Byung Chul/GYV-0656-2022; Choi, Sung-Yool/B-3383-2012 | 58119785900; 57205761271; 57221945294; 57194684802; 57721052400; 14420979700; 7408120246; 9238827900 | sungyool.choi@kaist.ac.kr;bc.jang@knu.ac.kr; | ADVANCED FUNCTIONAL MATERIALS | ADV FUNCT MATER | 1616-301X | 1616-3028 | 34 | 16 | SCIE | CHEMISTRY, MULTIDISCIPLINARY;CHEMISTRY, PHYSICAL;MATERIALS SCIENCE, MULTIDISCIPLINARY;NANOSCIENCE & NANOTECHNOLOGY;PHYSICS, APPLIED;PHYSICS, CONDENSED MATTER | 2024 | 19 | 4.5 | 1.98 | 2025-05-07 | 4 | 8 | chest X-ray image; memristor; stochastic in-memory computing; StyleGAN2-ADA; true random number | RANDOM NUMBER GENERATOR | chest X-ray image; memristor; stochastic in-memory computing; StyleGAN2-ADA; true random number | Cost effectiveness; Generative adversarial networks; Medical imaging; Memristors; Polymer films; Random number generation; Semiconducting films; Stochastic systems; Chest X-ray image; Images synthesis; Labelings; Memristor; Random Numbers; Stochastic in-memory computing; Stochastics; Stylegan2-adaptive discriminator augmentation; True random number; True randoms; Diagnosis | English | 2024 | 2024-04 | 10.1002/adfm.202305136 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |
| ○ | ○ | Article | The Role of Carrier Ion-Ligand Interaction on Intercalation Potentials and Phase Evolution of Berlin Green Cathodes in Rechargeable Batteries | Intercalation and deintercalation are fundamental processes in battery electrodes that involve the reversible addition and extraction of carrier ions such as lithium (Li) and sodium (Na) into a host framework made of transition metal (TM) ions and ligands. Although TM-ligand interactions are known to primarily determine intercalation potentials, a comprehensive understanding of their interactions involving the carrier ions still remains elusive. This study investigates the complex interactions between carrier ions (Li and Na) and the ligand in Berlin green (BG, Fe3+[Fe3+(CN)6]) cathodes to elucidate their effects on intercalation potentials and phase evolution. Comprehensive X-ray characterizations and electrochemical analyses reveal that the strong carrier ion-ligand interaction, influenced by the type and concentration of carrier ions, can modify the electronic structure of Fe ions and affect the intercalated structure of BG cathodes, thereby tuning the intercalation potentials. Specifically, the enhanced covalent interaction of the Na-CN units compared with that of the Li-CN units induces rhombohedral distortion in the fully sodiated state and increases the working potential of high-spin Fe ions. The findings highlight the critical role of carrier ion-ligand interactions in tuning the electrochemical properties of battery electrodes for the design of advanced battery systems. The intercalation potentials and dynamic phase evolution of Berlin green (BG) cathode are investigated in Li/Na-ion batteries. The carrier ion-cyanide anion interactions affect the intercalation potentials and the phase evolution, depending on the type and occupancy of carrier ions. The strong covalency Na-CN unit elevates the intercalation potentials and results in the cubic-to-rhombohedral distortion of the BG framework. image | Heo, Jeong Yeon; Lee, Ju-Hyeon; Kim, Geunsu; Kim, Hyunjin; Lee, Hyeon Jeong; Lee, Ji Hoon | Kyungpook Natl Univ, KNU Adv Mat Res Inst, Sch Mat Sci & Engn, Daegu 41566, South Korea; Ulsan Natl Inst Sci & Technol, Dept Mat Sci & Engn, Ulsan 44919, South Korea | ; Lee, Ji/AAU-7285-2021; Lee, Ju/M-8764-2019; Lee, Ji Hoon/T-4913-2017 | 58551045300; 57486987100; 59316543100; 59616877600; 56711412600; 55689885200 | hyeonjeong.lee@unist.ac.kr;jihoonlee@knu.ac.kr; | ADVANCED FUNCTIONAL MATERIALS | ADV FUNCT MATER | 1616-301X | 1616-3028 | 34 | 49 | SCIE | CHEMISTRY, MULTIDISCIPLINARY;CHEMISTRY, PHYSICAL;MATERIALS SCIENCE, MULTIDISCIPLINARY;NANOSCIENCE & NANOTECHNOLOGY;PHYSICS, APPLIED;PHYSICS, CONDENSED MATTER | 2024 | 19 | 4.5 | 0.28 | 2025-05-07 | 1 | 1 | cathodes; cation-ligand interaction; in situ X-ray characterization; intercalation; Prussian blue analogues; X-ray absorption fine structure; X-ray diffraction | PRUSSIAN WHITE ANALOGS; ELECTRODE MATERIALS; HIGH-CAPACITY; BLUE ANALOGS; LITHIUM; SODIUM; FRAMEWORK; INSERTION; VOLTAGE | cathodes; cation–ligand interaction; in situ X-ray characterization; intercalation; Prussian blue analogues; X-ray absorption fine structure; X-ray diffraction | Intercalation; Iron compounds; Lithium batteries; Lithium compounds; Metal ions; Sodium compounds; Sodium-ion batteries; X ray absorption fine structure spectroscopy; Battery electrode; Cation–ligand interaction; In situ X-ray characterization; Ion-ligand interaction; Ligand interactions; Phase evolutions; Prussian blue analogues; X ray absorption fine structures; X- ray diffractions; X-ray characterization; Ligands | English | 2024 | 2024-12 | 10.1002/adfm.202409171 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |
| ○ | ○ | Article | Theoretical Basis of Biomimetic Flexible Piezoelectric Acoustic Sensors for Future Customized Auditory Systems | Flexible piezoelectric sensors have been spotlighted as an essential human-machine interface (HMI) by obtaining high-quality data from omnipresent biomechanical inputs. Because human voice is the most intuitive bio-signal among them, flexible piezoelectric acoustic sensors (f-PAS) have a potential to shift the paradigm of HMI technologies. Despite the reported outstanding performance such as high sensitivity and speaker recognition accuracy, the theoretical investigation of f-PAS has been insufficient to realize future customized development, because sensing principles are fundamentally different from commercialized microphones. Here, a theoretical framework of self-powered f-PAS by using mechanical and electrical physics is introduced. First of all, the basic theory of f-PAS is compared with the auditory system of human cochlear. Based on the biomimetic trapezoidal shape, the resonant frequencies are analyzed with various structural and material conditions. In addition, the piezoelectricity of f-PAS is derived to predict the sensitivity and SNR prior to experiments. To investigate sensor properties under the medium condition that is similar to human ear, the acoustic responses depending on the states of matter are theoretically compared. Finally, the distance limit of f-PAS is studied with the correlations between piezoelectricity and sound pressure, which would provide novel strategies of functional material design for future applications of f-PAS. Herein, a foundational theory of biomimetic flexible piezoelectric acoustic sensors (f-PAS) is constructed for the first time. By designing a 3D model, resonant behaviors are investigated depending on structures and materials. In addition, the piezoelectricity is analyzed influenced by conditions of medium and distance. This theoretical framework will be a milestone in customizing the acoustoelectric conversion.image | Jung, Young Hoon; An, Jaehun; Hyeon, Dong Yeol; Wang, Hee Seung; Kim, Ingon; Jeong, Chang Kyu; Park, Kwi-Il; Lee, Pooi See; Lee, Keon Jae | Korea Adv Inst Sci & Technol KAIST, Dept Mat Sci & Engn, 291 Daehak Ro, Daejeon 305701, South Korea; Univ Oxford, Dept Mat, Oxford OX1 3PH, England; Jeonbuk Natl Univ, Div Adv Mat Engn, Jeonju 54896, Jeonbuk, South Korea; Kyungpook Natl Univ, Sch Mat Sci & Engn, Daegu 41566, South Korea; Nanyang Technol Univ, Sch Mat Sci & Engn, Singapore HUJ Alliance Res & Enterprise SHARE, Smart Grippers Soft Robot SGSR,Campus Res Excellen, Singapore 138602, Singapore | Hyeon, Dong Yeol/HNR-5711-2023; Lee, Keon Jae/C-1722-2011; Jeong, Chang Kyu/ADT-8127-2022; Lee, Pooi See/D-4551-2009; Jung, Young/F-1703-2013; LEE, Pooi/D-4551-2009; Park, Kwiil/LKN-9445-2024 | 57203956450; 57953069600; 57209099464; 57193951563; 58739610900; 55961876600; 35280874200; 7406117427; 8336408500 | keonlee@kaist.ac.kr; | ADVANCED FUNCTIONAL MATERIALS | ADV FUNCT MATER | 1616-301X | 1616-3028 | 34 | 10 | SCIE | CHEMISTRY, MULTIDISCIPLINARY;CHEMISTRY, PHYSICAL;MATERIALS SCIENCE, MULTIDISCIPLINARY;NANOSCIENCE & NANOTECHNOLOGY;PHYSICS, APPLIED;PHYSICS, CONDENSED MATTER | 2024 | 19 | 4.5 | 3.39 | 2025-05-07 | 15 | 18 | acoustic sensor; classic mechanics; electrodynamics; flexible piezoelectric; resonance physics | GENERATORS; CERAMICS; FLUORIDE | acoustic sensor; classic mechanics; electrodynamics; flexible piezoelectric; resonance physics | Acoustic devices; Acoustic waves; Biomimetics; Crystallography; Functional materials; Natural frequencies; Piezoelectric devices; Acoustic Sensors; Auditory systems; Classic mechanic; Flexible piezoelectric; High quality data; Human Machine Interface; Piezoelectric; Piezoelectric acoustic sensors; Piezoelectric sensors; Resonance physic; Piezoelectricity | English | 2024 | 2024-03 | 10.1002/adfm.202309316 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |
| ○ | ○ | Article | Ultra-High Peak Power Generation for Rotational Triboelectric Nanogenerator via Simple Charge Control and Boosted Discharge Design | Currently, enhancing the output power of rotational-mode triboelectric nanogenerators (TENGs) using various complicated systems is a contentious issue; however, this is a challenging process owing to the inherent characteristics of TENGs, namely, low output currents as opposed to high voltages. Thus, this study proposes a simple and innovative strategy for ultra-high output peak power generation of TENGs called a self-boosted rotational electrostatic-discharge TENG (SRE-TENG). The SRE-TENG mechanism is unique as it is based on charge control and boosted discharge design, thereby achieving a remarkable peak power of 1103.8 W, peak power density of 140.6 Kw m-2, low optimum resistance of 100 Omega, and broad peak power generation range of 10 Omega to 1 G Omega. Diligent measurements and analyses of the peak and root-mean-square voltage and current outputs of the SRE-TENG are conducted for various design variables and circuit configurations. The proposed SRE-TENG mechanism is validated using experimental and multiphysics simulation results. The high-output performance of the SRE-TENG is demonstrated via the lighting of 3,000 LEDs and a 60-W lamp array, continuous driving of a commercial sensor array, and hydrogen/oxygen generation via water electrolysis. This work proposes a simple and innovative strategy for ultra-high peak power generation called a self-boosted rotational electrostatic-discharge TENG (SRE-TENG). The SRE-TENG achieves a remarkable peak power of 1103.8 W, peak power density of 140.6 kW m-2. The output performance of the SRE-TENG is demonstrated via 3000 LEDs, 60-W commercial lamps, continuous sensor array operation, and real-time water electrolysis applications. image | Heo, Deokjae; Son, Jin-ho; Hur, Jiwoong; Yong, Hyungseok; Cha, Kyunghwan; Hwang, Patrick T. J.; Koo, Bonwook; Gwak, Yunki; Jin, Youngho; Kim, Dongseob; Hong, Jinkee; Lee, Sangmin | Chung Ang Univ, Sch Mech Engn, 84 Heukseok Ro, Seoul 06974, South Korea; Yonsei Univ, Sch Chem & Biomol Engn, 50 Yonsei Ro, Seoul 03722, South Korea; 21 Rowan Virtua Sch Translat Biomed Engn & Sci, Cardiovasc Inst, 22 NJ, Glassboro, NJ 08028 USA; 21 Rowan Virtua Sch Translat Biomed Engn & Sci, Dept Biomed Engn, 22 NJ, Glassboro, NJ 08028 USA; Kyungpook Natl Univ, Major Wood Sci & Technol, 80 Daehakro, Daegu 41566, South Korea; Agcy Def Dev, Missile Res Inst, Daejeon 34060, South Korea; Chung Ang Univ, Dept Adv Mat Engn, Anseong 17546, South Korea; Korea Inst Ind Technol KITECH, Safety Syst R&D Grp, 57 Yangho Gil, Yeongcheon Si 38822, Gyeongsangbuk D, South Korea | Lee, Sang-Jun/A-3892-2015 | 57202077412; 57368446000; 58136560100; 57034860700; 57223121626; 55892288500; 57219957247; 57216010085; 56416802000; 56109739900; 14053752700; 58374505000 | yusae@kitech.re.kr;jinkee.hong@yonsei.ac.kr;slee98@cau.ac.kr; | ADVANCED FUNCTIONAL MATERIALS | ADV FUNCT MATER | 1616-301X | 1616-3028 | 34 | 41 | SCIE | CHEMISTRY, MULTIDISCIPLINARY;CHEMISTRY, PHYSICAL;MATERIALS SCIENCE, MULTIDISCIPLINARY;NANOSCIENCE & NANOTECHNOLOGY;PHYSICS, APPLIED;PHYSICS, CONDENSED MATTER | 2024 | 19 | 4.5 | 0.57 | 2025-05-07 | 3 | 3 | boosted discharge; charge control; energy harvesting; triboelectric nanogenerator; ultra-high peak power | PERFORMANCE | boosted discharge; charge control; energy harvesting; triboelectric nanogenerator; ultra-high peak power | Electric discharges; Electrostatic devices; Functional materials; Triboelectricity; Boosted discharge; Charge control; High output; High peak power; Nanogenerators; Power- generations; Simple++; Triboelectric nanogenerator; Ultra-high; Ultra-high peak power; Nanogenerators | English | 2024 | 2024-10 | 10.1002/adfm.202406032 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |
| ○ | ○ | Article | Ultrafast Molecular Diagnosis-Based Solid-Phase Photonic PCR for Respiratory Pathogen Variant Discrimination | The need for an accurate and rapid diagnosis platform for highly contagious viruses, such as pandemic viruses, has rapidly increased. Conventional diagnostic methods in the initial stage of quarantine for the prevention of epidemic spread have encountered limitations such as a long operation time, occupation of a large space, and high cost per single operation. Here, a highly sensitive and selective portable diagnostic platform based on solid-phase photonic polymerase chain reaction (SP-PCR) is reported. The thermal cycle is operated by the photothermal energy converted from the photon energy of a light-emitting diode (LED) through a gold layer to phonons. The formation of an amplicon, which is immobilized through N-heterocyclic carbene, is confirmed through fluorescence on the surface of the miniaturized SP-PCR chip. The practical applicability of the newly developed diagnosis platform for the recognition of the presence of a SARS-CoV-2-specific genome sequence is demonstrated utilizing 100 clinical samples, including 72 COVID-19-positive clinical samples and 28 negative samples. Conventional diagnostic methods in the initial stage of quarantine for the prevention of epidemic spread have encountered limitations. Here, a highly sensitive and selective portable diagnostic platform based on solid-phase photonic polymerase chain reaction (SP-PCR) is reported. The thermal cycle is operated by the photothermal energy converted from the photon energy of a light-emitting diode (LED) through a gold layer to phonons. The formation of an amplicon, which is immobilized through N-heterocyclic carbene, is confirmed through fluorescence on the surface of the miniaturized SP-PCR chip. image | Seo, Sung Eun; Kim, Kyung Ho; Oh, Hanseul; Kim, Jinyeong; Kim, Soomin; Kim, Yu Kyung; Hong, Jung Joo; Ko, Kyong-Cheol; Cho, Haein; Lee, Do-Yeon; Kim, Hyoung-il; Lee, Kyoung G.; Kwon, Oh Seok | Sungkyunkwan Univ, SKKU Adv Inst Nanotechnol SAINT, Dept Nano Engn, Suwon 16419, South Korea; Yonsei Univ, Dept Civil & Environm Engn, Seoul 03722, South Korea; Chungbuk Natl Univ, Coll Vet Med, Cheongju 28644, South Korea; Korea Res Inst Biosci & Biotechnol KRIBB, Korea Preclin Evaluat Ctr, 125 Gwahak Ro, Daejeon 34141, South Korea; Kyungpook Natl Univ, Sch Med, Dept Clin Pathol, Daegu 700721, South Korea; Korea Res Inst Biosci & Biotechnol, Natl Primate Res Ctr, Cheongju 28116, South Korea; Korea Univ Sci & Technol UST, KRIBB Sch Biosci, Daejeon 34141, South Korea; Natl NanoFab Ctr, Ctr NanoBio Dev, 291 Daehak Ro, Daejeon 34141, South Korea; Sungkyunkwan Univ, Dept Nano Sci & Technol, Suwon 16419, South Korea | Kim, Hyoung-il/D-1053-2014; Kim, KyungHo/L-4523-2013 | 57208651527; 57226848520; 56683810800; 57207438329; 57874271100; 9237571900; 36808240600; 26433569100; 57204972978; 59149461500; 57211720610; 57208732163; 7402195808 | hi.kim@yonsei.ac.kr;kglee@nnfc.re.kr;oskwon79@skku.edu; | ADVANCED FUNCTIONAL MATERIALS | ADV FUNCT MATER | 1616-301X | 1616-3028 | 34 | 38 | SCIE | CHEMISTRY, MULTIDISCIPLINARY;CHEMISTRY, PHYSICAL;MATERIALS SCIENCE, MULTIDISCIPLINARY;NANOSCIENCE & NANOTECHNOLOGY;PHYSICS, APPLIED;PHYSICS, CONDENSED MATTER | 2024 | 19 | 4.5 | 0.57 | 2025-05-07 | 1 | 4 | diagnosis; N-heterocyclic carbene; photonic PCR; respiratory disease; variant discrimination | SELF-ASSEMBLED MONOLAYERS; N-HETEROCYCLIC CARBENES; GOLD NANOPARTICLES; DNA; PASSIVATION; SARS-COV-2; ADSORPTION | diagnosis; N-heterocyclic carbene; photonic PCR; respiratory disease; variant discrimination | Diseases; Functional materials; Molecular biology; Polymerase chain reaction; Viruses; Clinical samples; Diagnostic methods; Molecular diagnosis; N-heterocyclic carbenes; Pandemic virus; Photonic PCR; Solid phasis; Solid-phase; Ultra-fast; Variant discrimination; Diagnosis | English | 2024 | 2024-09 | 10.1002/adfm.202402972 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |
| ○ | ○ | Article | Unit-Cell-Thickness Electron Confinement by Geometrically Constrained Antipolar Ordering | Achieving precise electron or spin confinement is essential for the progress of oxide electronics and emerging quantum information processing. While 2D electron confinement is commonly achieved with bare surfaces, heteroepitaxial interfaces, and charged domain walls, its practical application poses challenges, notably by diverse confinement widths, limited material selection, and the lack of freedom of positioning to a desired location within a given material system. Here, with scrutinizing a novel defect structure, the study suggests a new strategy with compelling evidence to trigger electron confinement down to single unit-cell-thickness, through geometrically constrained antipolar ordering facilitated by superlattice-like periodic planar faults in metallic SrFeO3. Employing atomic resolution electron microscopy and density functional theory, the results demonstrate that electrons are confined two-dimensionally to screen the positive bound charges on head-to-head antipolar state boundary, meanwhile oxygen vacancies segregated in the planar faults compensate the negative bound charges on the tail-to-tail one, leading to the stabilization of the antipolar ordering. Additionally, distinguished from traditional methods, this approach offers a potential programing capability for achieving precise charge and spin control by regulating planar fault structure at atomic scale. Unit-cell-thickness 2D electron confinement is realized through geometrically constrained antipolar ordering in metallic SrFeO3. Revealed by atomic resolution electron microscopy and density functional theory, electrons are confined two-dimensionally to screen the positive bound charges on head-to-head antipolar phase boundaries. Meanwhile, oxygen vacancies segregated into planar faults compensate the negative bound charges on the tail-to-tail ones, stabilizing the antipolar ordering state. image | Xing, Yaolong; Hwang, Jaejin; Kang, Kyeong Tae; Choi, Woo Seok; Lee, Jaekwang; Oh, Sang Ho | Korea Inst Energy Technol KENTECH, Dept Energy Engn, Naju 58330, South Korea; Korea Inst Energy Technol KENTECH, Inst Energy Mat & Devices, Naju 58330, South Korea; Pusan Natl Univ, Dept Phys, Busan 46241, South Korea; Kyungpook Natl Univ, KNU G LAMP Res Ctr, Dept Phys, Daegu 41566, South Korea; Sungkyunkwan Univ, Dept Phys, Suwon 16419, South Korea | Choi, Woo Seok/G-8783-2014; Xing, Yaolong/MXJ-9903-2025; Oh, Sang Ho/AAG-1891-2020 | 57220044509; 58176189600; 56002123900; 14031133800; 55888626200; 57558169000 | choiws@skku.edu;jaekwangl@pusan.ac.kr;shoh@kentech.ac.kr; | ADVANCED FUNCTIONAL MATERIALS | ADV FUNCT MATER | 1616-301X | 1616-3028 | 34 | 44 | SCIE | CHEMISTRY, MULTIDISCIPLINARY;CHEMISTRY, PHYSICAL;MATERIALS SCIENCE, MULTIDISCIPLINARY;NANOSCIENCE & NANOTECHNOLOGY;PHYSICS, APPLIED;PHYSICS, CONDENSED MATTER | 2024 | 19 | 4.5 | 0 | 2025-05-07 | 0 | 0 | antipolar ordering; defect engineering; perovskite oxide; scanning transmission electron microscopy; unit-cell-thickness 2D electron confinement | DIFFERENTIAL PHASE-CONTRAST; CHARGED DOMAIN-WALLS; OXIDE; TRANSITION; GAS; MECHANISM; RECONSTRUCTION; NUCLEATION; MICROSCOPY; INTERFACE | antipolar ordering; defect engineering; perovskite oxide; scanning transmission electron microscopy; unit-cell-thickness 2D electron confinement | Cell engineering; Defect engineering; Density functional theory; Domain walls; Functional materials; High resolution transmission electron microscopy; Perovskite; Quantum optics; Scanning electron microscopy; Antipolar ordering; Bound charge; Cell thickness; Defect engineering; Electron confinement; Perovskite oxides; Planar fault; Scanning transmission electron microscopy; Unit cells; Unit-cell-thickness 2d electron confinement; Electrons | English | 2024 | 2024-10 | 10.1002/adfm.202406171 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |
| ○ | ○ | Article | Unleashing 2D MXene's Plasmonic Effect for Advanced Photonic Device Applications | MXenes, the largest family of 2D transition metal carbides/nitrides, have emerged as promising materials for various applications due to their exceptionally fascinating properties. In this study, the potential of MXenes is investigated in plasmonic applications, particularly focusing on surface-enhanced Raman scattering (SERS) and broadband photodetection. The study explored a broader range of light-matter interactions based on edge plasmons that emerge at sub-monolayer coverage of MXene, while existing studies have primarily focused on thicknesses exceeding tens of nanometers. Additionally, by incorporating MXenes onto 3D trench nanostructures, To maximize their plasmonic properties is aimed by enhancing the manifestation of edge plasmons, leading to intensified light amplification. The fabricated opto-electronic devices exhibit remarkable sensitivity in SERS detection, achieving a detection limit as low as approximate to 0.1 nm for the target dye molecule, significantly surpassing typical thresholds for non-metal-based detection. Additionally, the enhancement factor exceeds that of commercially available Au-based SERS substrates. Furthermore, MXene-based photodetectors demonstrate competitive photoresponsivity and response time, particularly toward the near-infrared (NIR) wavelength bands, which are challenging to achieve with MXene-based photodetectors. Through a comprehensive analysis, including electric field calculations, the mechanisms driving the observed enhancements are unveiled, primarily attributing them to edge plasmons. This study explores the plasmonic applications of MXenes, focusing on enhancing surface-enhanced Raman scattering (SERS) and broadband photodetection by incorporating them onto 3D trench nanostructures. The mechanisms are unveiled by driving the observed optical enhancement, primarily attributing it to the edge plasmons of MXene as calculated by finite element method simulations. image | Jang, Moonjeong; Kim, Seoung Hyun; Kim, Shinho; Chae, Kwanbyung; Choi, Sodam; Ha, Hwi Heon; Song, Jungchul; Bak, Min Jun; Cho, Su-Ho; Kim, Eunji; Song, Wooseok; Han, Hee; Jang, Min Seok; Ahn, Chi Won; Lee, Yonghee | Natl Nano Fab Ctr NNFC, Daejeon 34141, South Korea; Korea Adv Inst Sci & Technol, Sch Elect Engn, 291 Daehak Ro, Daejeon 34141, South Korea; Korea Res Inst Chem Technol KRICT, Thin Film Mat Res Ctr, Daejeon 34114, South Korea; Sungkyunkwan Univ, Sch Elect & Elect Engn, Suwon 16149, South Korea; Kyungpook Natl Univ, Dept Nano & Adv Mat Sci & Engn, Sangju Si 37224, Gyeongsangbuk D, South Korea | ; Jang, Min Seok/A-2548-2016; Lee, Jae/G-7717-2012 | 55947994900; 59206740700; 57196228295; 57191753795; 59208022600; 57215054040; 59208022700; 57427850700; 57191582410; 59602968000; 55459515600; 55661557300; 55418264900; 7201986640; 57348660100 | jang.minseok@kaist.ac.kr;cwahn@nnfc.re.kr;yhlee@nnfc.re.kr;yhlee@knu.ac.kr; | ADVANCED FUNCTIONAL MATERIALS | ADV FUNCT MATER | 1616-301X | 1616-3028 | 34 | 46 | SCIE | CHEMISTRY, MULTIDISCIPLINARY;CHEMISTRY, PHYSICAL;MATERIALS SCIENCE, MULTIDISCIPLINARY;NANOSCIENCE & NANOTECHNOLOGY;PHYSICS, APPLIED;PHYSICS, CONDENSED MATTER | 2024 | 19 | 4.5 | 0.28 | 2025-05-07 | 0 | 2 | edge plasmons; MXenes; photodetectors; plasmonics; surface-enhanced Raman scattering | ENHANCED RAMAN-SCATTERING | edge plasmons; MXenes; photodetectors; plasmonics; surface-enhanced Raman scattering | Carbides; Electric fields; Infrared devices; Photonic devices; Photons; Plasmonics; Raman scattering; Substrates; Surface scattering; Transition metals; Device application; Edge plasmon; Enhanced Raman scattering; Mxenes; Photonics devices; Plasmonic effects; Plasmonics; Surface enhanced Raman; Surface-enhanced raman scattering; Transition metals carbides; Photodetectors | English | 2024 | 2024-11 | 10.1002/adfm.202405341 | 바로가기 | 바로가기 | 바로가기 | 바로가기 |
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