Article
Computer Science, Information Systems
Abdullah Mohammad Tanvirul Hoque, Kusay Faisal Al-Tabatabaie, Md. Eakub Ali, Asad Muhammad Butt, Sheikh Sharif Iqbal Mitu, Khurram Karim Qureshi
Summary: This study develops a photonic crystal fiber-based surface plasmon resonance (PCF-SPR) sensor with a u-grooved selective coating for highly sensitive remote and biosensing applications.
Article
Chemistry, Physical
Hasan Abdullah, Muhammad Shahin Uddin, Bikash Kumar Paul
Summary: A high-sensitivity gold-coated photonic crystal fiber biosensor based on surface plasmon resonance is proposed in this paper. The sensing characteristics of the sensor are evaluated using the finite element method. Silica is used as the base material and a 40-nm gold layer is chosen as the plasmonic material. The sensor exhibits exceptional sensitivity response, compact structural design, and tunable performance, making it a strong contender for detecting microfluidic analytes in the biosensor field.
Article
Chemistry, Multidisciplinary
Haoyuan Cai, Mengwei Wang, Zhuohui Wu, Jing Liu, Xiaoping Wang
Summary: We propose a high-sensitivity SPR biosensor based on a multilayer structure consisting of Au, MoS2, and graphene. Numerical simulations and experiments demonstrate that the sensor has a sensitivity about 2 times higher than the conventional Au-based SPR sensor, and the presence of MoS2 enhances the sensitivity. The fabricated sensor shows a very low limit of detection for okadaic acid.
Article
Engineering, Electrical & Electronic
Naghi Shaban, Yogendra Kumar Prajapati, Ramin Mohammadkhani
Summary: This study compares conventional SPR sensors based on Ag-graphene and WCSPR sensors based on Ag-BFO-Ag-graphene with and without a metamaterial layer. The results show that the addition of a metamaterial layer significantly increases the depth of the reflectance dip, detection accuracy, and electric field penetration depth. The best sensitivity is obtained by adding a thin coating of TiO2 to the base structures. The proposed sensors can detect changes in the sensing medium as small as 0.001 RIU.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Chemistry, Physical
Han Liang, Yue Feng, Hongchen Liu, Wei Han, Tao Shen
Summary: This article presents a highly sensitive photonic crystal fiber humidity sensor based on surface plasmon resonance (SPR). By coating and optimizing the structural parameters, the sensor exhibits high sensitivity and humidity sensitivity. The graphene coating helps to enhance the sensitivity of the sensor. This sensor can be widely used in intelligent detection and security monitoring.
Article
Engineering, Electrical & Electronic
Vishal Sorathiya, Sunil Lavadiya, Osama S. Faragallah, Mahmoud M. A. Eid, Ahmed Nabih Zaki Rashed
Summary: The research article describes a graphene-metal composition based SPR sensor using PCF with dual-core, which provides wideband constant SPR response for low refractive sensors. The sensor offers sensitivity variations over a wide operating band, making it suitable for detection in various analyte areas.
OPTICAL AND QUANTUM ELECTRONICS
(2022)
Article
Optics
Shweta Mittal, Ankur Saharia, Yaseera Ismail, Francesco Petruccione, Anton V. Bourdine, Oleg G. Morozov, Vladimir V. Demidov, Juan Yin, Ghanshyam Singh, Manish Tiwari
Summary: This work presents the design and simulation of an all-optical sensor based on surface plasmon resonance effect on a spiral shaped photonic crystal fiber structure for detection of different cancer cells. The sensor showed high sensitivity and resolution for detecting breast cancer cells, with potential applications for detecting other types of cancer such as cervical cancer, skin cancer, blood cancer, and adrenal gland cancer.
Article
Engineering, Electrical & Electronic
Lway Faisal Abdulrazak, Md Biplob Hossain, Md Shofiqul Islam, Abdulhameed Fouad Alkhateeb, Ibrahim M. Mehedi, Sourav Roy, Md Sanwar Hossain, Md Amzad Hossain
Summary: A novel microstructure photonic crystal fiber-surface plasmon resonance sensor was developed in this study, demonstrating high wavelength sensitivity and amplitude sensitivity. The sensor showed excellent sensitivity and figure of merit at the optimal gold thickness, with strong linear fit within the detection range. Therefore, this sensor may be competitive in detecting analyte refractive index.
OPTICAL AND QUANTUM ELECTRONICS
(2022)
Article
Optics
Seyyed Mohammad Ghasem Mousavi-Kiasari, Kamyar Rashidi, Davood Fathi, Hussein Taleb, Seyed Mohammad Mirjalili, Vahid Faramarzi
Summary: This paper presents optimal graphene-based multilayer SPR biosensors for highly sensitive detection of biomolecules. The biosensor structures are optimized using a multi-objective gray wolf optimizer, aiming to maximize sensitivity and minimize FWHM. The optimized structures exhibit high sensitivity, low FWHM, and are easy to implement. The results pave the way for the development of highly-sensitive SPR biosensors.
Article
Multidisciplinary Sciences
Md. Mahbub Hossain, Muhammad Anisuzzaman Talukder
Summary: This study proposes a sensor utilizing graphene surface plasmon resonance to detect SARS-CoV-2. The sensor uses a graphene layer and other novel two-dimensional materials to increase light absorption for ultra-low concentrations of SARS-CoV-2, providing high sensitivity, low cost, portability, speed, and ease of operation.
Article
Optics
Shuo Liu, Lin Li, Zhenxu Bai
Summary: This paper presents a highly sensitive biosensor using silver nanopillars, achieving detection of refractive index changes in the terahertz band by adjusting the structure and surface treatment of the optical fiber. Valuable data was recorded under different settings to determine the sensor's final sensitivity.
Article
Computer Science, Information Systems
N. Jahan, Md M. Rahman, Mominul Ahsan, Md Abdul Based, Md Masud Rana, Saravanakumar Gurusamy, Julfikar Haider
Summary: A surface plasmon resonance Biosensor based on photonic crystal fiber has been proposed for detecting Pseudomonas bacteria with high sensitivity and spectral resolution.
Article
Multidisciplinary Sciences
Priyanka Thawany, Ashima Khanna, Umesh K. Tiwari, Akash Deep
Summary: L-cysteine conjugated molybdenum disulphide nanosheets are covalently attached to a gold coated surface plasmon resonance optical fiber to prepare a stable and reusable sensor for the detection of Ferritin and Immunoglobin G. The biosensor preparation process is characterized and verified with microscopic and spectroscopic techniques. The system shows a uniform and stable deposition of nanosheets, reproducibility, regeneration capacity, good sensitivity, and specificity for the targeted molecules.
SCIENTIFIC REPORTS
(2023)
Article
Optics
Xian Zhang, Yangyang Xu, Xiao-Song Zhu, Yi-Wei Shi
Summary: This paper presents a novel surface plasmon resonance (SPR) temperature sensor based on a silver-coated multi-hole optical fiber (SMHOF). By filling the central and surrounding air holes of the SMHOF with two different thermosensitive liquids, two separated resonance dips are observed, and they move in opposite directions with temperature variation. The interval between the two resonance dips shows good linearity and can be used for temperature detection. The proposed sensor has a high temperature sensitivity and tunable detection range, making it potentially suitable for applications in biomedicine, health care, and environmental monitoring.
Article
Spectroscopy
Faten Bashar Kamal Eddin, Yap Wing Fen, Nur Alia Sheh Omar, Josephine Ying Chyi Liew, Wan Mohd Ebtisyam Mustaqim Mohd Daniyal
Summary: A SPR sensor based on chitosan-graphene quantum dots thin film has been developed for detecting dopamine concentrations in the range from 0 fM to 1 pM, showing high sensitivity and low detection limit. The sensor exhibits outstanding performance in dopamine detection, demonstrating high accuracy and potential for clinical diagnostic applications.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2021)
Article
Nanoscience & Nanotechnology
Xinjiang Zhang, Anping Huang, Zhisong Xiao, Mei Wang, Jing Zhang, Paul K. Chu
Summary: The transfer characteristics and switching mechanism of the steep-slope transistor composed of the graphene/Janus MoSSe heterostructure have been investigated. The gate voltage can tune the Schottky barrier height and tunneling width, resulting in ambipolar switching with two minima in the subthreshold swing slope. The device provides a solution and guidance for the future design of low-power, high-performance devices.
Article
Electrochemistry
Huiyun Shi, Youyuan Zhang, Ning Pang, Shaohui Xu, Dayuan Xiong, Lianwei Wang, Pingxiong Yang, Paul K. Chu
Summary: The surface admittances calculated from electrochemical impedance spectra are utilized to analyze the surface states of X-MoS2 (X=Fe, Co, Ni) prepared on graphite felt. The semiconducting properties of Fe-MoS2 at the electrolyte-semiconductor interface lead to enhanced bifunctional catalytic properties in the hydrogen/oxidation evolution reactions (HER/OER) due to improved surface adsorption/desorption and slow-changing surface conductance. The surface morphology and electric field between the semiconductor and electrolyte are critical parameters affecting the surface properties in HER/OER.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Multidisciplinary
Shi Mo, Kaiwei Tang, Qing Liao, Lingxia Xie, Yuzheng Wu, Guomin Wang, Qingdong Ruan, Ang Gao, Yuanliang Lv, Kaiyong Cai, Liping Tong, Zhengwei Wu, Paul K. Chu, Huaiyu Wang
Summary: Bacteria killing behavior based on physical effects is preferred for biomedical implants due to minimal side effects. However, the understanding of antibacterial activity of nanostructures is limited, and nanoarchitectures on orthopedics should also promote bone formation. This study fabricated tilted and vertical nanolamellar structures on polyether-ether-ketone (PEEK) and found that both types physically kill bacteria, but through different mechanisms. Tilted nanostructures are more desirable for peri-implant bone regeneration. This research provides insights into the arrangement of nanostructures in orthopedic applications and different mechanisms of physical antibacterial activity.
MATERIALS HORIZONS
(2023)
Article
Engineering, Environmental
Shuyu Fan, Shu Xiao, Songsheng Lin, Fenghua Su, Yifan Su, Paul K. Chu
Summary: High-quality hydrogenated graphene coatings with superior lubricating properties and long service lifetime are synthesized on industrial materials through hot-filament chemical vapor deposition. The hydrogenated graphene coatings exhibit ultra-low friction and even localized superlubricity, providing a new approach to achieving macroscale superlubricity and high durability.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Nian He, Jian Li, Wenjing Li, Xiangsong Lin, Qingyun Fu, Xiang Peng, Weihong Jin, Zhentao Yu, Paul K. Chu
Summary: In this study, a new coating structure consisting of a poly(lactic acid) (PLA) coating and a (3-aminopropyl) triethoxysilane (ATS) transition layer was successfully fabricated to improve the corrosion rate and cytocompatibility of magnesium (Mg) alloys in the physiological environment, thus enhancing their potential application as bone fracture fixation devices.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Chemistry, Physical
Shuai Feng, Donglian Li, Hao Dong, Song Xie, Yaping Miao, Xuming Zhang, Biao Gao, Paul K. Chu, Xiang Peng
Summary: In this study, MoO2/Mo2N heterostructures were prepared by regulating the coordination of Mo atoms. The electrocatalyst exhibits high current density and excellent stability for hydrogen evolution reaction.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Shuyu Fan, Yinong Chen, Shu Xiao, Kejun Shi, Xinyu Meng, Songsheng Lin, Fenghua Su, Yifan Su, Paul K. Chu
Summary: Graphene coatings are promising solid lubrication materials due to their mechanical properties. This study presents a new method for in situ deposition of high-quality graphene coatings on hard substrates using NiCo solid solution and competitive reaction strategies. The graphene coating deposited on substrates with deep NiCo solid solution demonstrates superior low-friction and durability.
Article
Engineering, Multidisciplinary
Jie Shen, Lei Yong, Bo Chen, Wei Qiao, Xinyun Zhai, Shuhan Wang, Yongcan Huang, Paul K. Chu, Binsheng Yu, KelvinW. K. Yeung
Summary: Research is still exploring the contribution of sophisticated regulation of bioactive factors in the microenvironment to tissue regeneration and repair. This study established magnesium oxide homogeneously- and heterogeneously-embedded biocomposites to investigate the biological impacts resulting from different aggregation structures of bioinorganic cations. The results showed that the heterogeneous structure compromised cellular adhesion and proliferation, induced pro-inflammatory responses and affected bone regeneration.
COMPOSITES PART B-ENGINEERING
(2023)
Article
Materials Science, Coatings & Films
Yinghe Ma, Jinhui Mei, Junxin Ouyang, Peng Wu, Sai Wang, Jianguo Yang, Yanming He, Wenjian Zheng, Huaxin Li, Chuanyang Lu, Sendong Ren, Jianping Xu, Paul K. Chu
Summary: Micro-arc oxidation (MAO) is effective in enhancing the corrosion performance of Mg alloys, but the presence of micro-pores in MAO coatings can lead to corrosion. In this study, electron beam strengthening (EBS) is used to improve the microstructure of the Mg alloy, followed by the preparation of MAO coating to enhance corrosion resistance. EBS reduces the crystalline size of the Mg alloy, improves roughness, and increases corrosion resistance. The density and compactness of the MAO coating are improved by EBS, resulting in reduced porosity and enhanced corrosion resistance. A proposed corrosion mechanism is discussed.
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A
(2023)
Article
Chemistry, Applied
Zanling Huang, Shuqi Zhu, Yuan Duan, Chaoran Pi, Xuming Zhang, Abebe Reda Woldu, Jing-Xin Jian, Paul K. Chu, Qing-Xiao Tong, Liangsheng Hu, Xiangdong Yao
Summary: In this study, it was found that Ni sites act as a host to attract Fe(III) to form Fe(Ni)(III) binary centers, which promote the oxygen evolution reaction (OER) activity and stability by cyclical formation of intermediates. Additionally, other ions can also catalyze the OER process on different electrodes.
JOURNAL OF ENERGY CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Wang Guo, Miao Zhang, Zhongying Xue, Paul K. Chu, Yongfeng Mei, Ziao Tian, Zengfeng Di
Summary: The successful synthesis of wafer-scale single crystalline graphene on semiconducting Ge substrate and the characterization of its high carrier mobility have been achieved. The single crystalline graphene grown on Ge(110) exhibits a maximum carrier mobility of over 100,000 cm(2) V-1 s(-1) at low temperatures, surpassing that of graphene grown on other nonmetal substrates. The study suggests that graphene grown on Ge(110) may provide a platform for developing practical graphene-based nanodevices with high performance.
ADVANCED MATERIALS INTERFACES
(2023)
Article
Multidisciplinary Sciences
Yuzheng Wu, Dezhi Xiao, Pei Liu, Qing Liao, Qingdong Ruan, Chao Huang, Liangliang Liu, Dan Li, Xiaolin Zhang, Wei Li, Kaiwei Tang, Zhengwei Wu, Guomin Wang, Huaiyu Wang, Paul K. Chu
Summary: Flexible wearable devices (FWDs) often lack sufficient power to eradicate bacteria, and traditional antibacterial methods are not suitable due to mechanical and electrical requirements. This study demonstrates the use of polypyrrole (PPy) nanorods on FWDs for effective antibacterial purposes. The PPy nanorod films sterilize Staphylococcus aureus and Escherichia coli by generating membrane stress and depolarization upon mild electrification (1 V). The PPy nanorod films also exhibit excellent biosafety and electrical stability.
Article
Materials Science, Biomaterials
Bo Huang, Wei Guan, Chaofeng Wang, Shuilin Wu, Zhenduo Cui, Yufeng Zheng, Zhaoyang Li, Shengli Zhu, Hui Jiang, Paul K. Chu, Xiangmei Liu
Summary: In this study, a homo-heterostructured S-Cu-FC/CuS/GO@CMC hydrogel was constructed for the first time through an in situ ionic complexation reaction. The hydrogel exhibited enhanced photocatalytic performance under 808 nm near-infrared light irradiation. The interface between S-Cu-FC/CuS and graphene oxide (GO) facilitated the fast transfer of photogenerated charges, leading to the robust sterilization ability of the hydrogel.
BIOMATERIALS SCIENCE
(2023)
Meeting Abstract
Cell & Tissue Engineering
Dorsa Dehghanbaniani, Babak Mehrjou, Paul K. Chu, Wayne Y. W. Lee, Hongkai Wu
TISSUE ENGINEERING PART A
(2023)
Meeting Abstract
Cell & Tissue Engineering
Babak Mehrjou, Dorsa Dehghan Baniani, Paul K. Chu
TISSUE ENGINEERING PART A
(2023)
