Article
Materials Science, Multidisciplinary
Laishram Thoibileima Chanu, Mir Waqas Alam, Mohd Farhan, Naorem Khelchand Singh
Summary: This work presents the fabrication and characterization of NiO thin films on Si substrates. The as-deposited and annealed samples were analyzed using field emission scanning electron microscopy and X-ray diffraction. The electrical properties of the devices were tested with an Au electrode. The results demonstrate the suitability of NiO thin films for photodetector applications.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Chemistry, Physical
Dong-Gyu Kim, Su-Hwan Choi, Won-Bum Lee, Gyeong Min Jeong, Jihyun Koh, Seunghee Lee, Bongjin Kuh, Jin-Seong Park
Summary: This study proposes an atomic layer deposition (ALD)-derived Al2O3 gate insulator design for high-performance In-Ga-Zn-O thin-film transistors, achieved by controlling in situ plasma-enhanced ALD and thermal ALD processes. The optimal device demonstrates exceptionally high mobility, robust resistance to hydrogen annealing, and reliable positive bias temperature stress.
Article
Nanoscience & Nanotechnology
Dongil Ho, Sunwoo Choi, Hyunwoo Kang, Byungkyu Park, Minh Nhut Le, Sung Kyu Park, Myung-Gil Kim, Choongik Kim, Antonio Facchetti
Summary: Solution-processed metal-oxide thin-film transistors (TFTs) with different metal compositions were investigated for radiation hardness against ionizing radiation exposure. The amorphous zinc-indium-tin oxide (Zn-In-Sn-O or ZITO) was found to be an optimal radiation-resistant channel layer of TFTs due to its structural plasticity, defect tolerance, and high electron mobility. In situ irradiation experiments revealed three degradation mechanisms, including increase in channel conductivity, charge buildup in the interface and dielectric, and trap-assisted tunneling in the dielectric. By employing a radiation-resistant ZITO channel, a thin SiO2 dielectric, and a passivation layer, oxide-based TFTs demonstrated excellent stability under real-time gamma-ray irradiation.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Engineering, Electrical & Electronic
Vishwas Acharya, Nila Pal, Utkarsh Pandey, Akhilesh Kumar Yadav, Mukesh Suthar, Pradip Kumar Roy, Sajal Biring, Bhola N. Pal
Summary: This study demonstrates the deposition of SrTiO3 thin film using a simple solution processed technique and its application in the fabrication of sol-gel derived SnO2 TFT. The high dielectric constant of the SrTiO3 thin film allows the TFT to operate in both low voltage and high voltage ranges. Experimental results show hysteresis-free characteristics in the low voltage range (<2 V), but some hysteresis effects appear in the higher voltage range (>5 V).
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2023)
Article
Materials Science, Ceramics
Seo-Hyun Moon, Soo-Hyun Bae, Young -Ha Kwon, Nak-Jin Seong, Kyu-Jeong Choi, Sung-Min Yoon
Summary: Bi-layered channel structures were introduced to enhance the carrier mobility of oxide thin film transistors. The use of IZO/IGZO bi-layered channel resulted in the highest carrier mobility when the film thickness and ALD sub-cyclic ratio were optimized. The optimum cationic compositions of the IZO and IGZO layers were also determined.
CERAMICS INTERNATIONAL
(2022)
Review
Engineering, Manufacturing
Hye-Mi Kim, Dong-Gyu Kim, Yoon-Seo Kim, Minseok Kim, Jin-Seong Park
Summary: This article provides an overview of the history and importance of ALD-based oxide semiconductors, discusses the advantages of ALD in oxide semiconductor deposition, and explains the challenges of scaling oxide semiconductors and ALD for industrial applications.
INTERNATIONAL JOURNAL OF EXTREME MANUFACTURING
(2023)
Article
Engineering, Electrical & Electronic
Chihun Sung, Sooji Nam, Sung Haeng Cho
Summary: In this study, a new fabrication methodology was proposed to enable high-performance TFT with submicron channel length, exceeding the resolution limit of conventional photolithography. The fabricated Al-doped InZnSnO TFTs exhibited excellent performance characteristics, making them suitable for high-performance large-area electronics.
IEEE ELECTRON DEVICE LETTERS
(2021)
Article
Engineering, Electrical & Electronic
Arqum Ali, Jewel Kumer Saha, Abu Bakar Siddik, Md Mobaidul Islam, Jin Jang
Summary: The effects of NH3 and NF3 post plasma-treatment on spray-coated ZnO thin film transistors were investigated. NH3 plasma treatment causes n-type doping and creates acceptor-like states, while NF3 plasma treatment causes n-type doping and carriers generation by F incorporation. Proper NH3 and NF3 plasma treatments greatly enhance the performance of ZnO TFTs.
SOLID-STATE ELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
S. Arulkumar, S. Parthiban, J. Y. Kwon
Summary: The room temperature sputtered indium silicon oxide thin-films were annealed at various temperatures and studied for thin-film transistor (TFT) active channel layer application. The results showed that the annealing temperature had a significant influence on the structure and properties of the thin films, and the highest mobility was achieved at an annealing temperature of 200 degrees Celsius.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
S. Arulkumar, S. Parthiban, J. Y. Kwon, Y. Uraoka, J. P. S. Bermundo, Arka Mukherjee, Bikas C. Das
Summary: In this study, amorphous silicon indium oxide thin films were deposited using a sputtering process at room temperature for thin-film transistor (TFT) active channel applications. The study confirmed the amorphous nature and surface roughness of the deposited films and investigated the effect of different oxygen partial pressures on film properties. The results showed that the annealed films exhibited good performance and stability.
Article
Engineering, Electrical & Electronic
Soochang You, Anvar Tukhtaev, Gergely Tarsoly, Han Lin Zhao, Xiao Lin Wang, Fei Shan, Jae-Yun Lee, Jin Hee Lee, Sung Il Jang, Yong Jin Jeong, Sung-Jin Kim
Summary: Solution processable metal oxide semiconductors offer opportunities for large area fabrication of transparent logic circuits. In this paper, we present our results on the fabrication of TFTs with IZO semiconductor film and optimize the device fabrication process by studying the effect of stacking multiple layers. The practical applicability of the TFTs is demonstrated by fabricating a load-type inverter circuit and measuring its electrical response.
JOURNAL OF ELECTRICAL ENGINEERING & TECHNOLOGY
(2023)
Article
Nanoscience & Nanotechnology
Kuen Yao Lau, Yuting Yang, Di Zhao, Xiaofeng Liu, Jianrong Qiu
Summary: This study demonstrates the engineered optical properties and ENZ wavelength of magnetron-sputtered indium tin oxide (ITO) thin films. The measurement results show that the absorptive optical nonlinearity of the ITO film can be controlled by deposition conditions, and the potential application value of the film in nonlinear optical devices is demonstrated.
Article
Multidisciplinary Sciences
Mutsumi Kimura, Ryo Sumida, Ayata Kurasaki, Takahito Imai, Yuta Takishita, Yasuhiko Nakashima
Summary: Artificial intelligence is a promising concept for modern and future societies, with neuromorphic systems being suggested as compact and low power consumption hardware systems. Three key technologies proposed in the study include amorphous metal oxide semiconductor thin films, analog memristors, and autonomous local learning, which when assembled can achieve letter recognition function in a neuromorphic system.
SCIENTIFIC REPORTS
(2021)
Article
Materials Science, Multidisciplinary
Yusuf Tutel, Mete Batuhan Durukan, Serife O. Hacioglu, Umran Ceren Baskose, Levent Toppare, Husnu Emrah Unalan
Summary: This study demonstrates the use of ultrasonic spray deposition method to prepare bare MoO3 and cobalt-doped MoO3 thin films for electrochromic (EC) applications. Cobalt doping significantly improves the cyclic stability of the films. Moreover, MoO3:Co films show excellent performance in dual-band electrochromic devices with high capacitance retention and transmittance change.
APPLIED MATERIALS TODAY
(2023)
Article
Materials Science, Multidisciplinary
Funmilayo Hannah Abejide, Akintunde Ayodeji Ajayi, Samson Ibukun Akinsola, Aderemi Babatunde Alabi
Summary: In this study, gallium oxide thin films were synthesized using the cost-effective spray pyrolysis method on silicon substrates. The chemical bonding and surface morphology were analyzed using Fourier transform infrared and scanning electron microscopy. Optical studies revealed high absorbance in the UV region and an optical band gap of 4.9 eV for the films.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Engineering, Environmental
Liang-Yi Lin, Shalinee Kavadiya, Xiang He, Wei-Ning Wang, Bedia Begum Karakocak, Yu-Chih Lin, Mikhail Y. Berezin, Pratim Biswas
CHEMICAL ENGINEERING JOURNAL
(2020)
Article
Engineering, Environmental
Xiang He, Da-Ren Chen, Wei-Ning Wang
CHEMICAL ENGINEERING JOURNAL
(2020)
Article
Chemistry, Inorganic & Nuclear
Zan Zhu, Varun Natarajan, Wei-Ning Wang
JOURNAL OF SOLID STATE CHEMISTRY
(2020)
Article
Engineering, Chemical
Xiang He, Jianping Chen, Shane Albin, Zan Zhu, Wei-Ning Wang
Summary: The microdroplet-based spray method is an emerging strategy for the synthesis of metal-organic frameworks, offering improved heat and mass transfer rates for faster crystal formation. To optimize this synthesis route, further exploration of the dominant variables controlling product quality is needed, along with experiments and advanced computational analysis for guidance.
ADVANCED POWDER TECHNOLOGY
(2021)
Article
Engineering, Chemical
Yu Zhang, Xiang He, Zan Zhu, Wei-Ning Wang, Sheng-Chieh Chen
Summary: The newly developed E-MOFilter coated with highly porous metal-organic frameworks (MOFs) particles has the ability to remove PM2.5 and VOCs simultaneously. Experimental results show that the MOF particles deposited more uniformly in the MERV 13 media, and the E-MOFilter performed well in terms of efficiency and air resistance during PM filtration tests.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Engineering, Chemical
Yu Zhang, Zan Zhu, Wei-Ning Wang, Sheng-Chieh Chen
Summary: A new E-MOFilter was developed in this study for the simultaneous removal of PM2.5 and VOCs, with the PDMS-coated E-MOFilter performing the best. The study focused on the effectiveness of toluene adsorption under different RH conditions.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Environmental
Jianping Chen, Zan Zhu, Gustavo Monge, Wei-Ning Wang
Summary: This study investigates the formation of Cu-BDC MOF under different flow regimes by modulating operating pressure, and finds that decreasing pressure results in changes in crystal size, morphology, and orientation, as well as increased open metal sites and higher CO2 adsorption affinity for the MOFs.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Zan Zhu, Liang Bao, Dmitry Pestov, Ping Xu, Wei-Ning Wang
Summary: The surface-modulated photocatalyst with a positively charged layer enhances the affinity towards bacterial cells via electrostatic attractions. The experimental results demonstrate that the positively charged layer does promote the contact between bacteria and photocatalyst through electrostatic attractions. The cooperative effects of bacterial cell adhesion and ROS generation significantly enhance the disinfection performance of the photocatalyst.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Zhishang Wan, Lihong Gan, Wei-Ning Wang, Yi Jiang
Summary: Electrospray is an effective method for membrane surface functionalization using engineered nanomaterials. The lack of understanding of the deposition process hinders the practical applications of nanocomposite membranes. Advanced online characterization techniques and mathematical modeling are used to understand the key process parameters. The stabilization of deposited Ag NPs is achieved through polymeric solvent bonding. The results provide insights into the additive manufacturing of nanocomposite membranes with improved performance.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Environmental Sciences
Yu Zhang, Zan Zhu, Wei-Ning Wang, Sheng-Chieh Chen
Summary: A new type of metal-organic framework (MOF) coated electret filter, named E-MOFilter, was developed to remove PM2.5 and volatile organic compounds (VOCs) simultaneously. Photocatalytic nanosheets Bi2WO6/BiOCl were synthesized and coated on MIL-125-NH2 to create p-BWO@MIL, which was further applied to the electret filter to form PE-MOFilter. The results showed that PE-MOFilter was capable of capturing and degrading VOCs, as well as effectively removing PM2.5 through adsorption and photocatalytic oxidation. The research provides insights into the development of semiconductor@MOF coated electret media for improving indoor air quality with low energy consumption.
AEROSOL AND AIR QUALITY RESEARCH
(2023)
Review
Energy & Fuels
Jianping Chen, Zan Zhu, Wei-Ning Wang
Summary: This article reviews a rapid microdroplet-based nanomanufacturing process to fabricate MOFs-based functional materials with controlled hierarchical nanostructures. Strategies to integrate MOFs with semiconductors to form hybrid photocatalysts for addressing environmental challenges, particularly CO2 photoreduction, are summarized. In-situ techniques were used to explore the quantitative mechanisms of CO2 adsorption, activation, and charge transfer within the hybrid nanostructures.
JOURNAL OF PHYSICS-ENERGY
(2021)
Article
Chemistry, Multidisciplinary
Zan Zhu, Yu Zhang, Liang Bao, Jianping Chen, Shun Duan, Sheng-Chieh Chen, Ping Xu, Wei-Ning Wang
Summary: A self-decontaminating nanofibrous filter with high PM filtration efficiency was designed and fabricated, capable of efficiently killing airborne bacteria. This provides a new avenue for combating air contamination.
ENVIRONMENTAL SCIENCE-NANO
(2021)
Article
Environmental Sciences
Hao Tu, Weining Wang, Da-Ren Chen
AEROSOL AND AIR QUALITY RESEARCH
(2020)
Article
Chemistry, Multidisciplinary
Zan Zhu, Xiang He, Wei-Ning Wang
Article
Chemistry, Multidisciplinary
Asep Bayu Dani Nandiyanto, Xiang He, Wei-Ning Wang
Article
Chemistry, Analytical
Mengmeng Guo, Na Luo, Yueling Bai, Zhenggang Xue, Qingmin Hu, Jiaqiang Xu
Summary: A porous heterostructure WO3-C/In2O3 was designed and prepared for a miniature H2 sensor, which showed higher response value, lower operating temperature, fast response-recovery speed, and low limit of detection.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Feng Hu, Hui Hu, Yuting Li, Xiaohui Wang, Xiaowen Shi
Summary: Arsenic contamination in water bodies is a significant health risk. This study developed a chitosan-catechol modified electrode for rapid and accurate detection of trace amounts of arsenic. The modified electrode demonstrated good detection capability and resistance to ionic interference, making it suitable for in situ detection.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Yantao Zhang, Qian Liu, Tao Tian, Chunhua Xu, Pengli Yang, Lianju Ma, Yi Hou, Hui Zhou, Yongjun Gan
Summary: In this study, a lysosome-targeting buffering fluorogenic probe (Lyso-BFP) was designed and synthesized, demonstrating excellent photostability, pH specificity, and responsiveness to lysosomal acidification in living cells. The performance of Lyso-BFP in pH sensing was attributed to the inhibition of the photo-induced electron transfer process. Lyso-BFP allowed for wash-free imaging and long-term real-time monitoring of lysosome pH changes based on its off-on fluorescence behavior and buffer strategy.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Wei Cai, Wenbo Sun, Jiayue Wang, Xiaokui Huo, Xudong Cao, Xiangge Tian, Xiaochi Ma, Lei Feng
Summary: In this study, a near-infrared fluorescent probe HCBG was developed for imaging of alpha-GLC. HCBG exhibited excellent selectivity and sensitivity towards alpha-GLC in complex bio-samples, and showed good cell permeability for in situ real-time imaging. Through the high-throughput screening system established by HCBG, a natural alpha-GLC inhibitor was successfully isolated and identified. This study provides a novel fluorescence visualization tool for discovering and exploring the biological functions of diabetes-related gut microbiota, and a high-throughput screening approach for alpha-GLC inhibitor.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Trey W. Pittman, Xi Zhang, Chamindie Punyadeera, Charles S. Henry
Summary: Heart failure is a growing epidemic and a significant clinical and public health problem. Researchers have developed a portable and affordable diagnostic device for heart failure that can be used at the point-of-care, providing a valid alternative to current diagnostics approaches.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Anders O. Tjell, Barbara Jud, Roland Schaller-Ammann, Torsten Mayr
Summary: An optical hydrogen peroxide sensor based on catalytic degradation and the detection of produced oxygen is presented. The sensor offers higher resolution and better sensitivity at lower H2O2 concentrations. By removing O2 from the sample solution, a more sensitive O2 sensor can be used for measurement. The sensor has been successfully applied in a flow-through cell to measure H2O2 concentration in different flow rates.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Seong Jae Kim, Ji-hun Jeong, Gaabhin Ryu, Yoon Sick Eom, Sanha Kim
Summary: Surface-enhanced Raman spectroscopy (SERS) is a high-sensitivity, label-free detection method with various analytical applications. Researchers have developed a hydrophobic SERS substrate based on engineered carbon nanotube arrays (CNT-SERS) and studied the role of structural design at both micro and nanoscales. The substrate demonstrated controlled self-enrichment capability and enhanced sensitivity, with a significant increase in the SERS signal. The study also proposed a theoretical model and a concentration strategy inspired by plants for analyte deposition on microarrays.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Dan Zhao, Renjun Jiang, Xiaoqiang Liu, Subbiah Alwarappan
Summary: In this study, a novel ternary composite material was constructed by assembling cerium vanadate nanorods on reduced graphene oxide-microcrystalline cellulose nanosheets, and it was used for real-time monitoring of the concentration of superoxide anions in vivo. The ternary composite showed excellent conductivity, large surface area, and abundant active sites, leading to a wider linear range, high sensitivity, low detection limit, and fast response time for superoxide anion detection.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Tengfei Wang, Liwen Wang, Guang Wu, Dating Tian
Summary: In this study, a covalent organic framework material TaTp-COF with porous and uniform spheres was successfully prepared via hydrothermal reaction, and it was found to significantly enhance the aggregation-induced emission (AIE) of berberine. The unique emission properties of berberine on TaTp-COF were studied and utilized for the sensitive detection of berberine.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Lin Li, Yilei Ding, Lei Xu, Shuoran Chen, Guoliang Dai, Pengju Han, Lixin Lu, Changqing Ye, Yanlin Song
Summary: In this study, a novel TTI based on a ratiometric fluorescent nanosensor is designed, which has the advantages of high accuracy and low cost. Experimental and theoretical investigations confirm its pH responsiveness and demonstrate its good sensitivity and reliability. By monitoring the total volatile basic nitrogen, this TTI can accurately predict food spoilage and can be adaptively modified for different types of food. The TTI based on this nanosensor enables visual monitoring of food quality.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Fangju Chen, Xueting Wang, Wei Chen, Chenwen Shao, Yong Qian
Summary: Lung cancer is the second most common malignant tumor worldwide. Drug resistance in lung cancer leads to treatment failure and recurrence in majority of patients. This study developed a fluorescent prodrug that can be activated in cancer cells to release drugs, and its signal can be tracked by imaging. It shows a unique autophagy-driven ferroptosis effect, indicating its potential for targeting drug-resistant cancer cells.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Weichao Li, Qiming Yuan, Zhangcheng Xia, Xiaoxue Ma, Lifang He, Ling Jin, Xiangfeng Chu, Kui Zhang
Summary: This study developed a high-performance gas sensor for formaldehyde detection by modifying ZnSnO3 with ZnO QDs and SnO2 QDs. The modified sensor showed improved sensing response and lower working temperature. The presence of ZnO QDs formed rich heterojunctions, increased surface area, and provided oxygen deficiency for formaldehyde sensing reaction, thus enhancing the sensor performance. This research provides an alternative method to enhance the sensing properties of MOS by QDs modification.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Joung-Il Moon, Eun Jung Choi, Younju Joung, Jin-Woo Oh, Sang-Woo Joo, Jaebum Choo
Summary: A novel nanoplasmonic substrate was developed for biomedical applications, which showed strong hot spots for detecting biomarkers at low concentrations. The substrate, called AuNPs@M13, was made by immobilizing 60 nm gold nanoparticles onto the surface of an M13 bacteriophage scaffold. It demonstrated higher sensitivity and lower limit of detection compared to commercially available assays.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Ning Li, Ya Zhang, Ying Xu, Xiaofang Liu, Jian Chen, Mei Yang, Changjun Hou, Danqun Huo
Summary: The molecular subtype of breast cancer guides treatment and drug selection. Invasive tests can promote cancer cell metastasis, so the development of high-performance, low-cost diagnostic tools for cancer prognosis is crucial. Liquid biopsy techniques enable noninvasive, real-time, dynamic, multicomponent, quantitative, and long-term observations at the cellular, genetic, and molecular levels. A Cu-Zr metal-organic framework (MOF) nanoenzyme with monatomic Cu attachment has been synthesized and proven to have high catalytic performance. The sensor constructed using this nanoenzyme shows potential for accurate classification of breast cancer serum samples.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Jeongmin Kim, Hyemin Kim, Seunghyun Park, Hyeonaug Hong, Yong Jae Kim, Jiyong Lee, Jaeho Kim, Seung-Woo Cho, Wonhyoung Ryu
Summary: This study presents a method to fabricate independently functioning microneedle (MN) electrodes with narrow intervals for high precision electrochemical sensing. The optimized mixture of photocurable polymer and single-wall carbon nanotubes was used to mold single composite MNs, which were then attached to pre-patterned electrodes. Plasma etching and electropolymerization were performed to enhance the electrochemical activity, and Prussian blue and glucose oxidase were electrodeposited on the MNs for glucose detection. The MN electrodes showed good sensitivity and linearity, and the feasibility of glucose detection was demonstrated in an in vivo mouse study.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
