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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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| ○ | ○ | Article | Photoelectrochemical behaviors and photocatalytic activities of mixed CuO and CuFeO2 films with Ti and Ni underlayers for CO2 conversion | This study synthesizes heterojunction CuO and CuFeO2 (CFO) films via electrodeposition on Ti and Ni-deposited transparent conducting substrates and examines their photoelectrochemical behavior and unassisted photo -catalytic activities for CO2 conversion in aqueous bicarbonate solutions at circumneutral pH. Deposition of 15 nm and 50 nm-thick metal layers increases the electrical conductivity of the substrate, improving the deposition kinetics of the CFO precursors and establishing firm contact between CFO and the substrate. CFO films with Ti and Ni underlayers (Ti/CFO and Ni/CFO) exhibit higher photocurrent generation than bare CFO, owing to the rapid charge transfer and low interfacial charge-transfer resistance. Despite comparable apparent solar-to -chemical conversion (STC) efficiencies (similar to 1%), the C1 chemical (formate) is the sole product in the bare CFO film, whereas mixed C1-C4 chemicals are produced in Ti-and Ni-underlayered CFO films. When estimated based on transmitted light, the Ti/CFO and Ni/CFO films exhibit STCs of similar to 7% and 3%, respectively. | Choi, Seung Yo; Kim, Tae Woo; Jeong, Hye Won; Park, Hyunwoong | Kyungpook Natl Univ, Sch Energy Engn, Daegu 41566, South Korea; Korea Inst Energy Res, High Temp Energy Convers Lab, Daejeon 34129, South Korea | Park, Hyunwoong/A-1247-2012 | 57200542080; 58101463000; 55696273000; 7601565583 | hyewon.jeong_energy@knu.ac.kr;hwp@knu.ac.kr; | APPLIED CATALYSIS A-GENERAL | APPL CATAL A-GEN | 0926-860X | 1873-3875 | 654 | SCIE | CHEMISTRY, PHYSICAL;ENVIRONMENTAL SCIENCES | 2023 | 4.7 | 25.8 | 0.95 | 2025-06-25 | 8 | 10 | Solar fuel; Photocatalysis; Heterojunction; Electrochemical deposition; Metal oxide | CARBON-DIOXIDE; HOLE TRANSFER; COPPER; WATER; EFFICIENCY; REDUCTION; PHOTOSYNTHESIS; PHOTOCATHODES; PERFORMANCE; ELECTRODE | Electrochemical deposition; Heterojunction; Metal oxide; Photocatalysis; Solar fuel | Carbon dioxide; Charge transfer; Conductive films; Copper oxides; Electrochemical deposition; Electrochemistry; Iron compounds; Nickel; Reduction; Substrates; Aqueous bicarbonates; Bicarbonate solution; Conducting substrates; Electrochemical deposition; Metal layer; Metal-oxide; Photocatalytic activities; Photoelectrochemical behavior; Solar fuels; Underlayers; Heterojunctions | English | 2023 | 2023-03-25 | 10.1016/j.apcata.2023.119071 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Editorial Material | Response to Comment on 'Comparison of the efficacy of the early LI-SWT plus daily tadalafil with daily tadalafil only as penile rehabilitation for postprostatectomy erectile dysfunction' | Jang, Se Won; Chung, Jae-Wook; Kwon, Tae Gyun | Kyungpook Natl Univ Hosp, Dept Urol, Daegu, South Korea; Kyungpook Natl Univ, Biomed Res Inst, Daegu, South Korea; Kyungpook Natl Univ, Sch Med, Dept Urol, Daegu, South Korea; Kyungpook Natl Univ, Joint Inst Regenerat Med, Daegu, South Korea | 57428381500; 35204798500; 15073765400 | jeus119@hanmail.net;tgkwon@knu.ac.kr; | INTERNATIONAL JOURNAL OF IMPOTENCE RESEARCH | INT J IMPOT RES | 0955-9930 | 1476-5489 | 35 | 5 | SCIE | UROLOGY & NEPHROLOGY | 2023 | 2.8 | 25.8 | 0 | 2025-06-25 | 0 | 0 | RADICAL PROSTATECTOMY | Erectile Dysfunction; Humans; Male; Penile Erection; Phosphodiesterase 5 Inhibitors; Prostatectomy; Tadalafil; tadalafil; phosphodiesterase V inhibitor; tadalafil; comparative study; efficacy parameters; erectile dysfunction; human; hyperbaric oxygen therapy; low intensity shockwave therapy; male; Note; pelvic floor muscle training; penis; prostatectomy; shock wave therapy; systematic review; erectile dysfunction; penis erection; prostatectomy | English | 2023 | 2023-08 | 10.1038/s41443-022-00591-3 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||||
| ○ | ○ | Article | Mediation of mPFC-LHb pathway in acupuncture inhibition of cocaine psychomotor activity | The medial prefrontal cortex (mPFC) and the lateral habenula (LHb) play roles in drug addiction and cognitive functions. Our previous studies have suggested that acupuncture at Shenmen (HT7) points modulates mesolimbic reward system in order to suppress drug-induced addiction behaviours. To explore whether an mPFC-LHb circuit mediates the inhibitory effects of acupuncture on addictive behaviours, we examined the projection from mPFC to LHb, excitation of mPFC neurons during acupuncture stimulation, the effects of optogenetic modulation of mPFC-LHb on HT7 inhibition of cocaine-induced locomotion and the effect of mPFC lesion on HT7 inhibition of nucleus accumbens (NAc) dopamine release. Acupuncture was applied at bilateral HT7 points for 20 s, and locomotor activity was measured in male Sprague-Dawley rats. Although cocaine injection significantly increased locomotor activity, HT7 acupuncture suppressed the cocaine-induced locomotion. The inhibitory effect of HT7 on cocaine-enhanced locomotion was blocked by optogenetic silencing of the mPFC-LHb circuit. In vivo extracellular recordings showed that HT7 acupuncture evoked an increase in the action potentials of mPFC neurons. Optopatch experiment proved glutamatergic projections from mPFC to LHb. HT7 acupuncture suppressed NAc dopamine release following cocaine injection, which was blocked by electrolytic lesion of mPFC. These results suggest the mediation of mPFC-LHb circuit in the inhibitory effects of acupuncture on cocaine psychomotor activity in rats. Acupuncture at HT7 reduced cocaine enhancement of locomotor activity and NAc DA release, which was blocked by the lesion of the mPFC/PL and optogenetic inhibition of mPFC/PL-LHb circuits. Our results suggest that the acupuncture recruits the mPFC/PL-LHb circuit to suppress cocaine-induced psychomotor responses.image | Chang, Suchan; Kim, Hyung Kyu; Ryu, Yeonhee; Jang, Han Byeol; Ahn, Danbi; Lee, Bong Hyo; Youn, Dong-ho; Lee, Bae Hwan; Kim, Hee Young | Daegu Haany Univ, Coll Korean Med, Dept Physiol, Daegu, South Korea; Kyungpook Natl Univ, Sch Dent, Dept Oral Physiol, Daegu, South Korea; Korea Inst Oriental Med, Korean Med Fundamental Res Div, Daejeon, South Korea; Yonsei Univ, Coll Med, Dept Physiol, Seoul, South Korea; Yonsei Univ, Coll Med, Dept Physiol, Seoul 03722, South Korea | Kim, Hyongbum/D-5804-2019; Kim, Hee/ABH-9670-2020; Kim, Hyung/J-5451-2012 | 56208951400; 57208751988; 8673843500; 57214789091; 57222303784; 22938054300; 7005252239; 57216391271; 57205024859 | heeykim@yuhs.ac; | ADDICTION BIOLOGY | ADDICT BIOL | 1355-6215 | 1369-1600 | 28 | 10 | SCIE | BIOCHEMISTRY & MOLECULAR BIOLOGY;SUBSTANCE ABUSE | 2023 | 3.1 | 25.9 | 0.4 | 2025-06-25 | 3 | 2 | acupuncture; cocaine; dopamine; glutamatergic projection; lateral habenula; medial prefrontal cortex | LATERAL HABENULA; PREFRONTAL CORTEX; NUCLEUS-ACCUMBENS; DOPAMINE RELEASE; DRUG-ADDICTION; NEURONS; PROJECTIONS; DYSFUNCTION; CIRCUITRY | acupuncture; cocaine; dopamine; glutamatergic projection; lateral habenula; medial prefrontal cortex | Acupuncture Therapy; Animals; Cocaine; Dopamine; Habenula; Male; Prefrontal Cortex; Rats; Rats, Sprague-Dawley; cocaine; dopamine; cocaine; dopamine; action potential; acupuncture; animal experiment; animal tissue; Article; controlled study; dopamine release; gene silencing; glutamatergic transmission; habenula; in vivo study; lateral habenula; male; medial prefrontal cortex; nerve cell stimulation; nonhuman; nucleus accumbens; optogenetics; psychomotor activity; rat; shenmen acupoint; animal; prefrontal cortex; Sprague Dawley rat | English | 2023 | 2023-10 | 10.1111/adb.13321 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |
| ○ | ○ | Article | Analyzing Acceptor-like State Distribution of Solution-Processed Indium-Zinc-Oxide Semiconductor Depending on the In Concentration | Understanding the density of state (DOS) distribution in solution-processed indium-zinc-oxide (IZO) thin-film transistors (TFTs) is crucial for addressing electrical instability. This paper presents quantitative calculations of the acceptor-like state distribution of solution-processed IZO TFTs using thermal energy analysis. To extract the acceptor-like state distribution, the electrical characteristics of IZO TFTs with various In molarity ratios were analyzed with respect to temperature. An Arrhenius plot was used to determine electrical parameters such as the activation energy, flat band energy, and flat band voltage. Two calculation methods, the simplified charge approximation and the Meyer-Neldel (MN) rule-based carrier-surface potential field-effect analysis, were proposed to estimate the acceptor-like state distribution. The simplified charge approximation established the modeling of acceptor-like states using the charge-voltage relationship. The MN rule-based field-effect analysis validated the DOS distribution through the carrier-surface potential relationship. In addition, this study introduces practical and effective approaches for determining the DOS distribution of solution-processed IZO semiconductors based on the In molarity ratio. The profiles of the acceptor-like state distribution provide insights into the electrical behavior depending on the doping concentration of the solution-processed IZO semiconductors. | Kim, Dongwook; Lee, Hyeonju; Yun, Youngjun; Park, Jaehoon; Zhang, Xue; Bae, Jin-Hyuk; Baang, Sungkeun | Hallym Univ, Sch Informat Sci, Chunchon 24252, South Korea; Hallym Univ, Sch Nano Convergence Technol, Chunchon 24252, South Korea; Hallym Univ, Dept Elect Engn, Chunchon 24252, South Korea; Shangdong Univ Sci & Technol, Coll Ocean Sci & Engn, Qingdao 266590, Peoples R China; Kyungpook Natl Univ, Sch Elect Engn, Daegu 41566, South Korea; Kyungpook Natl Univ, Sch Elect & Elect Engn, Daegu 41566, South Korea | ; Yun, Youngjun/A-4639-2009 | 57218666795; 57040032800; 26030144600; 55717156300; 55949859900; 35326180700; 6602618479 | d.kim@hallym.ac.kr;hyeonjulee@hallym.ac.kr;youngjun.yun@hallym.ac.kr;jaypark@hallym.ac.kr;skd996027@sdust.edu.cn;jhbae@ee.knu.ac.kr;baang@hallym.ac.kr; | NANOMATERIALS | NANOMATERIALS-BASEL | 2079-4991 | 13 | 15 | SCIE | CHEMISTRY, MULTIDISCIPLINARY;MATERIALS SCIENCE, MULTIDISCIPLINARY;NANOSCIENCE & NANOTECHNOLOGY;PHYSICS, APPLIED | 2023 | 4.4 | 26.0 | 0.33 | 2025-06-25 | 3 | 3 | density of state; solution-processed IZO semiconductor; thin-film transistor; thermal analysis | THIN-FILM TRANSISTORS; TEMPERATURE; DENSITY; TRANSPORT; MOBILITY; CHARGE | density of state; solution-processed IZO semiconductor; thermal analysis; thin-film transistor | English | 2023 | 2023-08 | 10.3390/nano13152165 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | Antibiotic-Powered Energy Harvesting: Introducing Benzylpenicillin as an Efficient Tribopositive Material for Triboelectric Nanogenerators | The pursuit of enhancing the performance of triboelectric nanogenerators (TENGs) has led to the exploration of new materials with efficient charge-generating capabilities. Herein, we propose benzylpenicillin sodium salt (b-PEN) as a candidate biomaterial for the tribopositive layer owing to its superior electron-donating capability via the lone pairs of electrons on its sulfur atom, carbonyl, and amino functional groups. The proposed b-PEN TENG device exhibits promising electrical performance with an open-circuit voltage of 185 V, a short-circuit current of 4.52 mu A, and a maximum power density of 72 mu W/cm2 under force applied by a pneumatic air cylinder at 5 Hz. The biomechanical energy-harvesting capabilities of the b-PEN TENG device are demonstrated by actuating it with finger, hand, and foot movements. Moreover, the proposed TENG device is utilized to charge capacitors and power light-emitting diodes by scavenging the externally applied mechanical energy. This outstanding electrical performance makes b-PEN a promising tribopositive material. | Nauman, Asad; Ameen, Shahid; Kim, Hak-Rin | Kyungpook Natl Univ, Sch Elect & Elect Engn, Daegu 41566, South Korea; Ulsan Natl Inst Sci & Technol UNIST, Dept Chem, Ulsan 44919, South Korea; Kyungpook Natl Univ, Sch Elect Engn, Daegu 41566, South Korea | Kim, Hak-Rin/T-1897-2019; Ameen, Shahid/NFS-2972-2025 | 57796499100; 56857333200; 7410124944 | naumanasadknu@knu.ac.kr;sasamra313@unist.ac.kr;rineey@knu.ac.kr; | NANOMATERIALS | NANOMATERIALS-BASEL | 2079-4991 | 13 | 23 | SCIE | CHEMISTRY, MULTIDISCIPLINARY;MATERIALS SCIENCE, MULTIDISCIPLINARY;NANOSCIENCE & NANOTECHNOLOGY;PHYSICS, APPLIED | 2023 | 4.4 | 26.0 | 0.22 | 2025-06-25 | 2 | 2 | benzylpenicillin sodium salt; energy harvesting; triboelectric nanogenerator; biomaterial; antibiotics; sustainability | antibiotics; benzylpenicillin sodium salt; biomaterial; energy harvesting; sustainability; triboelectric nanogenerator | English | 2023 | 2023-12 | 10.3390/nano13232995 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||||
| ○ | ○ | Article | Atomically Thin Amorphous Indium-Oxide Semiconductor Film Developed Using a Solution Process for High-Performance Oxide Transistors | High-performance oxide transistors have recently attracted significant attention for use in various electronic applications, such as displays, sensors, and back-end-of-line transistors. In this study, we demonstrate atomically thin indium-oxide (InOx) semiconductors using a solution process for high-performance thin-film transistors (TFTs). To achieve superior field-effect mobility and switching characteristics in TFTs, the bandgap and thickness of the InOx were tuned by controlling the InOx solution molarity. As a result, a high field-effect mobility and on/off-current ratio of 13.95 cm2 V-1 s-1 and 1.42 x 1010, respectively, were achieved using 3.12-nanometer-thick InOx. Our results showed that the charge transport of optimized InOx with a thickness of 3.12 nm is dominated by percolation conduction due to its low surface roughness and appropriate carrier concentration. Furthermore, the atomically thin InOx TFTs showed superior positive and negative gate bias stress stabilities, which are important in electronic applications. The proposed oxide TFTs could provide an effective means of the fabrication of scalable, high-throughput, and high-performance transistors for next-generation electronic applications. | Park, Jun-Hyeong; Park, Won; Na, Jeong-Hyeon; Lee, Jinuk; Eun, Jun-Su; Feng, Junhao; Kim, Do-Kyung; Bae, Jin-Hyuk | Kyungpook Natl Univ, Sch Elect & Elect Engn, Daegu 41566, South Korea | Feng, Junhao/KZF-5875-2024 | 57454302100; 58494046100; 57192006339; 58487758300; 58493099200; 57905127500; 57984042900; 35326180700 | jeef1234@knu.ac.kr;kdk7362@knu.ac.kr;jhbae@ee.knu.ac.kr; | NANOMATERIALS | NANOMATERIALS-BASEL | 2079-4991 | 13 | 18 | SCIE | CHEMISTRY, MULTIDISCIPLINARY;MATERIALS SCIENCE, MULTIDISCIPLINARY;NANOSCIENCE & NANOTECHNOLOGY;PHYSICS, APPLIED | 2023 | 4.4 | 26.0 | 0.76 | 2025-06-25 | 8 | 7 | amorphous oxide semiconductor; thin-film transistors; ultrathin channel; high performance; solution process | LOW-TEMPERATURE; TRANSPARENT; INSTABILITY; IN2O3; ZNO | amorphous oxide semiconductor; high performance; solution process; thin-film transistors; ultrathin channel | English | 2023 | 2023-09 | 10.3390/nano13182568 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Review | Brain network analysis for the discrimination of dementia disorders using electrophysiology signals: A systematic review | Background Dementia-related disorders have been an age-long challenge to the research and healthcare communities as their various forms are expressed with similar clinical symptoms. These disorders are usually irreversible at their late onset, hence their lack of validated and approved cure. Since their prodromal stages usually lurk for a long period of time before the expression of noticeable clinical symptoms, a secondary prevention which has to do with treating the early onsets has been suggested as the possible solution. Connectivity analysis of electrophysiology signals has played significant roles in the diagnosis of various dementia disorders through early onset identification.Objective With the various applications of electrophysiology signals, the purpose of this study is to systematically review the step-by-step procedures of connectivity analysis frameworks for dementia disorders. This study aims at identifying the methodological issues involved in such frameworks and also suggests approaches to solve such issues.Methods In this study, ProQuest, PubMed, IEEE Xplore, Springer Link, and Science Direct databases are employed for exploring the evolution and advancement of connectivity analysis of electrophysiology signals of dementia-related disorders between January 2016 to December 2022. The quality of assessment of the studied articles was done using Cochrane guidelines for the systematic review of diagnostic test accuracy.Results Out of a total of 4,638 articles found to have been published on the review scope between January 2016 to December 2022, a total of 51 peer-review articles were identified to completely satisfy the review criteria. An increasing trend of research in this domain is identified within the considered time frame. The ratio of MEG and EEG utilization found within the reviewed articles is 1:8. Most of the reviewed articles employed graph theory metrics for their analysis with clustering coefficient (CC), global efficiency (GE), and characteristic path length (CPL) appearing more frequently compared to other metrics.Significance This study provides general insight into how to employ connectivity measures for the analysis of electrophysiology signals of dementia-related disorders in order to better understand their underlying mechanism and their differential diagnosis. | Adebisi, Abdulyekeen T. T.; Veluvolu, Kalyana C. C. | Kyungpook Natl Univ, Sch Elect & Elect Engn, Daegu, South Korea; Kyungpook Natl Univ, Sch Elect Engn, Daegu, South Korea | 57220004878; 8703318200 | veluvolu@ee.knu.ac.kr; | FRONTIERS IN AGING NEUROSCIENCE | FRONT AGING NEUROSCI | 1663-4365 | 15 | SCIE | GERIATRICS & GERONTOLOGY;NEUROSCIENCES | 2023 | 4.1 | 26.0 | 0.62 | 2025-06-25 | 9 | 10 | Alzheimer's disease; brain functional network; connectivity analysis; dementia; electroencephalogram (EEG); magnetoencephalogram (MEG); threshold selection | GRAPH-THEORETICAL ANALYSIS; MILD COGNITIVE IMPAIRMENT; ALZHEIMERS-DISEASE; FUNCTIONAL CONNECTIVITY; EEG SIGNALS; ABNORMALITIES; MODEL | Alzheimer's disease; brain functional network; connectivity analysis; dementia; electroencephalogram (EEG); magnetoencephalogram (MEG); threshold selection | alpha rhythm; Alzheimer disease; beta rhythm; brain electrophysiology; brain function; delta rhythm; dementia; diagnostic accuracy; diagnostic test accuracy study; electroencephalogram; electroencephalography; functional connectivity; gamma rhythm; human; magnetoencephalography; meta analysis; nerve cell network; receiver operating characteristic; Review; systematic review; theta rhythm | English | 2023 | 2023-03-03 | 10.3389/fnagi.2023.1039496 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||||
| ○ | ○ | Article | Cognitive training based on functional near-infrared spectroscopy neurofeedback for the elderly with mild cognitive impairment: a preliminary study | IntroductionMild cognitive impairment (MCI) is often described as an intermediate stage of the normal cognitive decline associated with aging and dementia. There is a growing interest in various non-pharmacological interventions for MCI to delay the onset and inhibit the progressive deterioration of daily life functions. Previous studies suggest that cognitive training (CT) contributes to the restoration of working memory and that the brain-computer-interface technique can be applied to elicit a more effective treatment response. However, these techniques have certain limitations. Thus, in this preliminary study, we applied the neurofeedback paradigm during CT to increase the working memory function of patients with MCI. MethodsNear-infrared spectroscopy (NIRS) was used to provide neurofeedback by measuring the changes in oxygenated hemoglobin in the prefrontal cortex. Thirteen elderly MCI patients who received CT-neurofeedback sessions four times on the left dorsolateral prefrontal cortex (dlPFC) once a week were recruited as participants. ResultsCompared with pre-intervention, the activity of the targeted brain region increased when the participants first engaged in the training; after 4 weeks of training, oxygen saturation was significantly decreased in the left dlPFC. The participants demonstrated significantly improved working memory compared with pre-intervention and decreased activity significantly correlated with improved cognitive performance. ConclusionOur results suggest that the applications for evaluating brain-computer interfaces can aid in elucidation of the subjective mental workload that may create additional or decreased task workloads due to CT. | Lee, Ilju; Kim, Dohyun; Kim, Sehwan; Kim, Hee Jung; Chung, Un Sun; Lee, Jung Jae | Dankook Univ, Coll Hlth Sci, Dept Psychol, Cheonan, South Korea; Dankook Univ Hosp, Dept Psychiat, Cheonan, South Korea; Dankook Univ, Coll Med, Dept Psychiat, Cheonan, South Korea; Dankook Univ, Coll Med, Dept Biomed Engn, Cheonan, South Korea; Dankook Univ, Coll Med, Dept Physiol, Cheonan, South Korea; Kyungpook Natl Univ, Sch Med, Dept Psychiat, Daegu, South Korea | ; KIM, Hyeon-Joong/C-4448-2011; Lee, Yoon/ABA-8808-2020 | 57222654502; 57193495490; 57206875767; 57887371700; 24477437300; 35196312700 | mdjjlee@dankook.ac.kr; | FRONTIERS IN AGING NEUROSCIENCE | FRONT AGING NEUROSCI | 1663-4365 | 15 | SCIE | GERIATRICS & GERONTOLOGY;NEUROSCIENCES | 2023 | 4.1 | 26.0 | 0.88 | 2025-06-25 | 5 | 6 | functional near-infrared spectroscopy; neurofeedback; elderly; cognitive training; cognitive impairment | FRONTAL ASSESSMENT BATTERY; WORKING-MEMORY; ALZHEIMERS-DISEASE; KOREAN VERSION; FMRI; WAVE | cognitive impairment; cognitive training; elderly; functional near-infrared spectroscopy; neurofeedback | oxyhemoglobin; aged; Article; clinical article; cognitive rehabilitation; correlation analysis; dorsolateral prefrontal cortex; female; functional near-infrared spectroscopy; human; left hemisphere; male; mental load; mild cognitive impairment; neurofeedback; oxygen saturation; prefrontal cortex; working memory | English | 2023 | 2023-07-26 | 10.3389/fnagi.2023.1168815 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | Deep Learning-Based Semantic Segmentation of Urban Areas Using Heterogeneous Unmanned Aerial Vehicle Datasets | Deep learning techniques have recently shown remarkable efficacy in the semantic segmentation of natural and remote sensing (RS) images. However, these techniques heavily rely on the size of the training data, and obtaining large RS imagery datasets is difficult (compared to RGB images), primarily due to environmental factors such as atmospheric conditions and relief displacement. Unmanned aerial vehicle (UAV) imagery presents unique challenges, such as variations in object appearance due to UAV flight altitude and shadows in urban areas. This study analyzed the combined segmentation network (CSN) designed to train heterogeneous UAV datasets effectively for their segmentation performance across different data types. Results confirmed that CSN yielded high segmentation accuracy on specific classes and can be used on diverse data sources for UAV image segmentation. The main contributions of this study include analyzing the impact of CSN on segmentation accuracy, experimenting with structures with shared encoding layers to enhance segmentation accuracy, and investigating the influence of data types on segmentation accuracy. | Song, Ahram | Kyungpook Natl Univ, Dept Locat Based Informat Syst, 2559 Gyeongsang daero, Sangju 37224, Gyeongsangbuk, South Korea | 56496312900 | ars@knu.ac.kr; | AEROSPACE | AEROSPACE-BASEL | 2226-4310 | 10 | 10 | SCIE | ENGINEERING, AEROSPACE | 2023 | 2.1 | 26.0 | 0.5 | 2025-06-25 | 3 | 3 | unmanned aerial vehicle (UAV); dataset; semantic segmentation; combined segmentation network; semantic drone dataset (SDD); UAVid | NETWORK | combined segmentation network; dataset; semantic drone dataset (SDD); semantic segmentation; UAVid; unmanned aerial vehicle (UAV) | English | 2023 | 2023-10 | 10.3390/aerospace10100880 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||||
| ○ | ○ | Article | Degradation of Organic Methyl Orange (MO) Dye Using a Photocatalyzed Non-Ferrous Fenton Reaction | Removal of recalcitrant organic pollutants by degradation or mineralization from industrial waste streams is continuously being explored to find viable options to apply on the commercial scale. Herein, we propose a titanium nanotube array (based on a non-ferrous Fenton system) for the successful degradation of a model contaminant azo dye, methyl orange, under simulated solar illumination. Titanium nanotube arrays were synthesized by anodizing a titanium film in an electrolyte medium containing water and ethylene glycol. Characterization by SEM, XRD, and profilometry confirmed uniformly distributed tubular arrays with 100 nm width and 400 nm length. The non-ferrous Fenton performance of the titanium nanotube array in a minimal concentration of H2O2 showed remarkable degradation kinetics, with a 99.7% reduction in methyl orange dye concentration after a 60 min reaction time when illuminated with simulated solar light (100 mW cm(-2), AM 1.5G). The pseudo-first-order rate constant was 0.407 mu mol(-1) min(-1), adhering to the Langmuir-Hinshelwood model. Reaction product analyses by TOC and LC/MS/MS confirmed that the methyl orange was partially fragmented, while the rest was mineralized. The facile withdrawal and regeneration observed in the film-based titanium nanotube array photocatalyst highlight its potential to treat real industrial wastewater streams with a <5% performance drop over 20 reaction cycles. | Zavahir, Sifani; Elmakki, Tasneem; Ismail, Nourhan; Gulied, Mona; Park, Hyunwoong; Han, Dong Suk | Qatar Univ, Ctr Adv Mat CAM, POB 2713, Doha, Qatar; Kyungpook Natl Univ, Sch Energy Engn, Daegu 41566, South Korea; Qatar Univ, Coll Engn, Dept Chem Engn, POB 2713, Doha, Qatar | Han, Dong SuK/AAX-9333-2021; Han, Dong Suk/Q-8641-2017 | 56493120500; 57221280532; 58120565200; 57204041429; 7601565583; 36139213900 | dhan@qu.edu.qa; | NANOMATERIALS | NANOMATERIALS-BASEL | 2079-4991 | 13 | 4 | SCIE | CHEMISTRY, MULTIDISCIPLINARY;MATERIALS SCIENCE, MULTIDISCIPLINARY;NANOSCIENCE & NANOTECHNOLOGY;PHYSICS, APPLIED | 2023 | 4.4 | 26.0 | 1.63 | 2025-06-25 | 14 | 15 | methyl orange; titanium nanotube; non-ferrous Fenton reaction; advanced oxidation process; photocatalysis | OXIDATIVE-DEGRADATION; CATALYTIC-OXIDATION; H2O2 DECOMPOSITION; HYDROGEN-PEROXIDE; TITANIUM-DIOXIDE; MECHANISM; DECOLORIZATION; ACTIVATION; PHOTODEGRADATION; PERFORMANCE | advanced oxidation process; methyl orange; non-ferrous Fenton reaction; photocatalysis; titanium nanotube | English | 2023 | 2023-02 | 10.3390/nano13040639 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | Effects of Post-UV/Ozone Treatment on Electrical Characteristics of Solution-Processed Copper Oxide Thin-Film Transistors | To realize oxide semiconductor-based complementary circuits and better transparent display applications, the electrical properties of p-type oxide semiconductors and the performance improvement of p-type oxide thin-film transistors (TFTs) are required. In this study, we report the effects of post-UV/ozone (O-3) treatment on the structural and electrical characteristics of copper oxide (CuO) semiconductor films and the TFT performance. The CuO semiconductor films were fabricated using copper (II) acetate hydrate as a precursor material to solution processing and the UV/O-3 treatment was performed as a post-treatment after the CuO film was fabricated. During the post-UV/O-3 treatment for up to 13 min, the solution-processed CuO films exhibited no meaningful change in the surface morphology. On the other hand, analysis of the Raman and X-ray photoemission spectra of solution-processed CuO films revealed that the post-UV/O-3 treatment induced compressive stress in the film and increased the composition concentration of Cu-O lattice bonding. In the post-UV/O-3-treated CuO semiconductor layer, the Hall mobility increased significantly to approximately 280 cm(2) V-1 s(-1), and the conductivity increased to approximately 4.57 x 10(-2) ohm(-1) cm(-1). Post-UV/O-3-treated CuO TFTs also showed improved electrical properties compared to those of untreated CuO TFTs. The field-effect mobility of the post-UV/O-3-treated CuO TFT increased to approximately 6.61 x 10(-3) cm(-2) V-1 s(-1), and the on-off current ratio increased to approximately 3.51 x 10(3). These improvements in the electrical characteristics of CuO films and CuO TFTs can be understood through the suppression of weak bonding and structural defects between Cu and O bonds after post-UV/O-3 treatment. The result demonstrates that the post-UV/O-3 treatment can be a viable method to improve the performance of p-type oxide TFTs. | Lee, Hyeonju; Kim, Dongwook; Shin, Hyunji; Bae, Jin-Hyuk; Park, Jaehoon | Hallym Univ, Dept Elect Engn, Chunchon 24252, South Korea; Inha Univ, Dept Elect & Comp Engn, Incheon 22212, South Korea; Kyungpook Natl Univ, Sch Elect Engn, Daegu 41566, South Korea; Kyungpook Natl Univ, Sch Elect & Elect Engn, Daegu 41566, South Korea | 57040032800; 57218666795; 56289655800; 35326180700; 55717156300 | jhbae@ee.knu.ac.kr;jaypark@hallym.ac.kr; | NANOMATERIALS | NANOMATERIALS-BASEL | 2079-4991 | 13 | 5 | SCIE | CHEMISTRY, MULTIDISCIPLINARY;MATERIALS SCIENCE, MULTIDISCIPLINARY;NANOSCIENCE & NANOTECHNOLOGY;PHYSICS, APPLIED | 2023 | 4.4 | 26.0 | 0.22 | 2025-06-25 | 2 | 2 | solution-processed CuO semiconductor; thin-film transistor; post UV; ozone treatment | PERFORMANCE | post UV/ozone treatment; solution-processed CuO semiconductor; thin-film transistor | English | 2023 | 2023-03 | 10.3390/nano13050854 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||||
| ○ | ○ | Article | Facile Synthesis and X-ray Attenuation Properties of Ultrasmall Platinum Nanoparticles Grafted with Three Types of Hydrophilic Polymers | Ultrasmall platinum nanoparticles (Pt-NPs) grafted with three types of hydrophilic and biocompatible polymers, i.e., poly(acrylic acid), poly(acrylic acid-co-maleic acid), and poly(methyl vinyl ether-alt-maleic acid) were synthesized using a one-pot polyol method. Their physicochemical and X-ray attenuation properties were characterized. All polymer-coated Pt-NPs had an average particle diameter (d(avg)) of 2.0 nm. Polymers grafted onto Pt-NP surfaces exhibited excellent colloidal stability (i.e., no precipitation after synthesis for >1.5 years) and low cellular toxicity. The X-ray attenuation power of the polymer-coated Pt-NPs in aqueous media was stronger than that of the commercial iodine contrast agent Ultravist at the same atomic concentration and considerably stronger at the same number density, confirming their potential as computed tomography contrast agents. | Saidi, Abdullah Khamis Ali Al; Ghazanfari, Adibehalsadat; Liu, Shuwen; Tegafaw, Tirusew; Ahmad, Mohammad Yaseen; Zhao, Dejun; Liu, Ying; Yang, So Hyeon; Hwang, Dong Wook; Yang, Ji-ung; Park, Ji Ae; Jung, Jae Chang; Nam, Sung-Wook; Chang, Yongmin; Lee, Gang Ho | Kyungpook Natl Univ, Coll Nat Sci, Dept Chem, Taegu 41566, South Korea; Kyungpook Natl Univ, Dept Med & Biol Engn, Taegu 41944, South Korea; Korea Inst Radiol & Med Sci, Div RI Convergence Res, Seoul 01817, South Korea; Kyungpook Natl Univ, Coll Nat Sci, Dept Biol, Taegu 41566, South Korea; Kyungpook Natl Univ, Sch Med, Dept Mol Med, Taegu 41944, South Korea | ; Nam, Sung-Wook/V-5519-2019; Ahmad, Mohammad/AAH-2164-2020; Liu, Shuwen/ABD-5719-2021 | 57217492867; 57200327606; 57208926248; 55983618600; 57203054570; 57222567792; 57221731093; 58034142900; 57749644800; 57212217968; 16319690600; 57203377467; 16167127700; 7501840633; 7404851841 | ychang@knu.ac.kr;ghlee@mail.knu.ac.kr; | NANOMATERIALS | NANOMATERIALS-BASEL | 2079-4991 | 13 | 5 | SCIE | CHEMISTRY, MULTIDISCIPLINARY;MATERIALS SCIENCE, MULTIDISCIPLINARY;NANOSCIENCE & NANOTECHNOLOGY;PHYSICS, APPLIED | 2023 | 4.4 | 26.0 | 0.44 | 2025-06-25 | 4 | 4 | ultrasmall Pt nanoparticle; hydrophilic and biocompatible polymer coating; high X-ray attenuation power; computed tomography contrast agent | COMPUTED-TOMOGRAPHY; GOLD NANOPARTICLES; MESOPOROUS PLATINUM; CONTRAST AGENT; CANCER-THERAPY; SURFACE; STRESS; CELLS; ACIDS | computed tomography contrast agent; high X-ray attenuation power; hydrophilic and biocompatible polymer coating; ultrasmall Pt nanoparticle | English | 2023 | 2023-03 | 10.3390/nano13050806 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | Graphene Oxide-Based Memristive Logic-in-Memory Circuit Enabling Normally-Off Computing | Memristive logic-in-memory circuits can provide energy- and cost-efficient computing, which is essential for artificial intelligence-based applications in the coming Internet-of-things era. Although memristive logic-in-memory circuits have been previously reported, the logic architecture requiring additional components and the non-uniform switching of memristor have restricted demonstrations to simple gates. Using a nanoscale graphene oxide (GO) nanosheets-based memristor, we demonstrate the feasibility of a non-volatile logic-in-memory circuit that enables normally-off in-memory computing. The memristor based on GO film with an abundance of unusual functional groups exhibited unipolar resistive switching behavior with reliable endurance and retention characteristics, making it suitable for logic-in-memory circuit application. In a state of low resistance, temperature-dependent resistance and I-V characteristics indicated the presence of a metallic Ni filament. Using memristor-aided logic (MAGIC) architecture, we performed NOT and NOR gates experimentally. Additionally, other logic gates such as AND, NAND, and OR were successfully implemented by combining NOT and NOR universal logic gates in a crossbar array. These findings will pave the way for the development of next-generation computer systems beyond the von Neumann architecture, as well as carbon-based nanoelectronics in the future. | Kim, Yeongkwon; Jeon, Seung-Bae; Jang, Byung Chul | Kyungpook Natl Univ, Sch Elect & Elect Engn, 80 Daehakro, Daegu 41566, South Korea; Hanbat Natl Univ, Dept Elect Engn, 125 Dongseo Daero, Daejeon 34158, South Korea; Kyungpook Natl Univ, Sch Elect Engn, 80 Daehakro, Daegu 41566, South Korea | Jeon, Seung-Bae/AAX-7433-2020; Jang, Byung Chul/GYV-0656-2022 | 58120005900; 56489471100; 9238827900 | sbjeon@hanbat.ac.kr;bc.jang@knu.ac.kr; | NANOMATERIALS | NANOMATERIALS-BASEL | 2079-4991 | 13 | 4 | SCIE | CHEMISTRY, MULTIDISCIPLINARY;MATERIALS SCIENCE, MULTIDISCIPLINARY;NANOSCIENCE & NANOTECHNOLOGY;PHYSICS, APPLIED | 2023 | 4.4 | 26.0 | 0.33 | 2025-06-25 | 3 | 3 | memristor; logic-in-memory circuit; in-memory computing; graphene oxide | SWITCHES; DEVICES; DESIGN | graphene oxide; in-memory computing; logic-in-memory circuit; memristor | English | 2023 | 2023-02 | 10.3390/nano13040710 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | Hardware-Intrinsic Physical Unclonable Functions by Harnessing Nonlinear Conductance Variation in Oxide Semiconductor-Based Diode | With the advancement of the Internet of Things (IoT), numerous electronic devices are connected to each other and exchange a vast amount of data via the Internet. As the number of connected devices increases, security concerns have become more significant. As one of the potential solutions for security issues, hardware intrinsic physical unclonable functions (PUFs) are emerging semiconductor devices that exploit inherent randomness generated during the manufacturing process. The unclonable security key generated from PUF can address the inherent limitations of conventional electronic systems which depend solely on software. Although numerous PUFs based on the emerging memory devices requiring switching operations have been proposed, achieving hardware intrinsic PUF with low power consumption remains a key challenge. Here, we demonstrate that the process-induced nonlinear conductance variations of oxide semiconductor-based Schottky diodes provide a suitable source of entropy for the implementation of PUF without switching operation. Using a mild oxygen plasma treatment, the surface electron accumulation layer that forms naturally in oxide semiconductor film can be partially eliminated, resulting in a large variation of nonlinearity as an exotic entropy source. The mild plasma-treated Schottky diodes showed near ideal 50% average uniformity and uniqueness, as well as an ideal entropy value without the need for additional hardware area and power costs. These findings will pave the way for the development of hardware intrinsic PUFs to realize energy-efficient cryptographic hardware. | Kim, Namju; Jeon, Seung-Bae; Jang, Byung Chul | Kyungpook Natl Univ, Sch Elect & Elect Engn, 80 Daehakro, Daegu 41566, South Korea; Hanbat Natl Univ, Dept Elect Engn, 125 Dongseo Daero, Daejeon 34158, South Korea; Kyungpook Natl Univ, Sch Elect Engn, 80 Daehakro, Daegu 41566, South Korea | Jang, Byung Chul/GYV-0656-2022; Jeon, Seung-Bae/AAX-7433-2020 | 58119785900; 56489471100; 9238827900 | sbjeon@hanbat.ac.kr;bc.jang@knu.ac.kr; | NANOMATERIALS | NANOMATERIALS-BASEL | 2079-4991 | 13 | 4 | SCIE | CHEMISTRY, MULTIDISCIPLINARY;MATERIALS SCIENCE, MULTIDISCIPLINARY;NANOSCIENCE & NANOTECHNOLOGY;PHYSICS, APPLIED | 2023 | 4.4 | 26.0 | 0.11 | 2025-06-25 | 1 | 1 | IoT; physical unclonable function; oxide semiconductor; Schottky diode | SRAM-BASED PUF; WORK FUNCTION; PERFORMANCE; PRIMITIVES; ROBUST | IoT; oxide semiconductor; physical unclonable function; Schottky diode | English | 2023 | 2023-02 | 10.3390/nano13040675 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | Improvement in Switching Characteristics and Bias Stability of Solution-Processed Zinc-Tin Oxide Thin Film Transistors via Simple Low-Pressure Thermal Annealing Treatment | In this study, we used a low-pressure thermal annealing (LPTA) treatment to improve the switching characteristics and bias stability of zinc-tin oxide (ZTO) thin film transistors (TFTs). For this, we first fabricated the TFT and then applied the LPTA treatment at temperatures of 80 degrees C and 140 degrees C. The LPTA treatment reduced the number of defects in the bulk and interface of the ZTO TFTs. In addition, the changes in the water contact angle on the ZTO TFT surface indicated that the LPTA treatment reduced the surface defects. Hydrophobicity suppressed the off-current and instability under negative bias stress because of the limited absorption of moisture on the oxide surface. Moreover, the ratio of metal-oxygen bonds increased, while the ratio of oxygen-hydrogen bonds decreased. The reduced action of hydrogen as a shallow donor induced improvements in the on/off ratio (from 5.5 x 10(3) to 1.1 x 10(7)) and subthreshold swing (8.63 to V.dec(-1) and 0.73 V.dec(-1)), producing ZTO TFTs with excellent switching characteristics. In addition, device-to-device uniformity was significantly improved because of the reduced defects in the LPTA-treated ZTO TFTs. | Feng, Junhao; Jeon, Sang-Hwa; Park, Jaehoon; Lee, Sin-Hyung; Jang, Jaewon; Kang, In Man; Kim, Do-Kyung; Bae, Jin-Hyuk | Kyungpook Natl Univ, Sch Elect & Elect Engn, 80 Daehakro, Daegu 41566, South Korea; Hallym Univ, Dept Elect Engn, Chunchon 24252, South Korea | ; , Do Kyung Kim/A-5289-2008; Feng, Junhao/KZF-5875-2024; Lee, Sin-Hyung/ABD-6425-2022 | 57905127500; 57552166800; 55717156300; 57226880204; 57194107504; 7203062678; 57984042900; 35326180700 | suhuajunhao@knu.ac.kr;masirong777@knu.ac.kr;kdk7362@knu.ac.kr;jhbae@ee.knu.ac.kr; | NANOMATERIALS | NANOMATERIALS-BASEL | 2079-4991 | 13 | 11 | SCIE | CHEMISTRY, MULTIDISCIPLINARY;MATERIALS SCIENCE, MULTIDISCIPLINARY;NANOSCIENCE & NANOTECHNOLOGY;PHYSICS, APPLIED | 2023 | 4.4 | 26.0 | 0 | 2025-06-25 | 0 | 0 | oxide semiconductor; solution process; thin film transistors; bias stability; low-pressure thermal annealing treatment | CARRIER TRANSPORT; LOW-TEMPERATURE; SEMICONDUCTOR | bias stability; low-pressure thermal annealing treatment; oxide semiconductor; solution process; thin film transistors | English | 2023 | 2023-05-24 | 10.3390/nano13111722 | 바로가기 | 바로가기 | 바로가기 | 바로가기 |
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