Article
Engineering, Electrical & Electronic
Md. Junayed, Wei Ru Wong
Summary: The phenomenon of asymmetric Fano resonance supported by plasmonic nanohole arrays has attracted significant interest in ultrasensitive label-free biosensing. This study proposes a unique plasmonic octamer nanohole array structure with multiple asymmetric spectral resonances, offering excellent transmission efficiency and nanometer-level linewidth. The proposed structure exhibits high sensitivity for the analyte layer refractive index and shows promise for detecting immobilized DNA monolayers.
IEEE SENSORS JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
Yunping Qi, Chuqin Liu, Bingbing Hu, Xiangyu Deng, Xiangxian Wang
Summary: A tunable selective absorber consisting of periodic arrow-shaped graphene arrays operating in the far infrared and terahertz range is proposed by depositing a set of arrow-shaped graphene ribbons on a SiO2 dielectric spacer. The research shows that increasing both the Fermi level and relaxation time significantly enhances the absorption performance, with a nearly 12-fold improvement when both parameters are increased simultaneously. Additionally, increasing the relaxation time from 0.1 ps to 1.0 ps results in an increase in the maximum absorption peak value.
RESULTS IN PHYSICS
(2021)
Article
Chemistry, Physical
Mariia Ivanchenko, Vida Nooshnab, Alline F. Myers, Nicolas Large, Andrew J. Evangelista, Hao Jing
Summary: Researchers prepared colloidal monodisperse eccentric dual plasmonic noble metal-nonstoichiometric copper chalcogenide (Au@Cu2-xSe) hybrid hetero-nanostructures with controllable semiconductor shell size and two tunable localized surface plasmon resonances (LSPRs). The experimental and computational results demonstrated the superior catalytic activity and higher rate constants of Au@Cu2-xSe in photocatalysis, attributed to the enhanced electromagnetic field strength arising from efficient plasmonic coupling under the excitation of two LSPRs.
Article
Chemistry, Analytical
Kai Gu, Ming Sun, Yang Zhang
Summary: This study proposes the use of a plasmonic lens (PL) to replace the traditional objective lens in bottom-illumination mode for tip-enhanced Raman spectroscopy (TERS). By optimizing the structure of the PL, the electric field energy can be concentrated more at the focal point, reducing background noise and increasing the excitation efficiency of the near-field Raman signal.
Article
Optics
Xiaofeng Xu, Xiao-Qing Luo, Jingzhao Zhang, Weihua Zhu, Zhiyong Chen, Tie-Fu Li, W. M. Liu, Xin-Lin Wang
Summary: This study investigates the application of near-infrared plasmonic DFRs in a hybrid metasurface through numerical and theoretical approaches. The research demonstrates that plasmonic sensing can be achieved by modulating the polarization orientation and geometric parameters of the unit cells, resulting in resonance mode-broadening and mode-shifting. Additionally, the study shows the realization of a high ON/OFF ratio plasmonic switch and digital metasurface with plasmonic DFRs. These findings are significant for polarization-sensitive optical sensing, passive optical switches, and programmable metasurface devices.
Article
Chemistry, Physical
Shiva Khani, Majid Afsahi
Summary: This paper proposes four novel structures based on plasmon-induced transparency (PIT) for designing plasmonic refractive index sensors (RISs). The performance of these structures is simulated and validated using the finite difference time domain (FDTD) method. The main RIS achieves a maximum sensitivity of 725.1 nm/RIU and a figure of merit (FOM) of 91.78 RIU-1. By enhancing the design, higher FOM values are achieved for the other three RIS structures, with RIS I, RIS II, and RIS III reaching maximum FOM values of 120.18, 144.27, and 113.07 RIU-1, respectively.
Article
Physics, Applied
Min Li, Cuixiu Xiong, Chao Liu, Biao Zeng, Banxian Ruan, Baihui Zhang, Enduo Gao, Hongjian Li
Summary: In this paper, an easily implemented monolayer graphene structure is proposed for achieving triple plasmon-induced transparency and absorption effects. By altering the Fermi energy and carrier mobility of graphene, the absorption intensity can be dynamically controlled over a broadband frequency range. The triple plasmon-induced absorption spectrum shows 20 times more absorption bands compared to monolayer graphene, with a sensitivity of 0.4 THz RIU-1 for terahertz plasmonic sensing applications.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Review
Nanoscience & Nanotechnology
Bin Ai, Ziwei Fan, Zi Jing Wong
Summary: This review summarizes the recent theoretical and experimental works on plasmonic perovskite solar cells, light emitters, and sensors. The underlying physical mechanisms, design routes, device performances, and optimization strategies are discussed, along with challenges and future directions for the plasmonic perovskite research field.
MICROSYSTEMS & NANOENGINEERING
(2022)
Article
Materials Science, Multidisciplinary
Melissa Najem, Franck Carcenac, Thierry Taliercio, Fernando Gonzalez-Posada
Summary: Plasmonic nanoantennas have great potential for biosensing applications, providing real-time detection and identification of molecular bio-information. This article presents a barcode-like nanostructured surface based on a metal-insulator-metal platform, which exhibits tunable localized surface resonances. The fabrication and optical characterization of periodic arrays of aluminum bowties within the MIM structure, as well as the investigation of surface-enhanced infrared absorption, are reported.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Chemistry, Physical
Nastaran Korani, Abdollah Abbasi, Mohammad Danaie
Summary: This paper proposes plasmonic band-pass and band-stop filters based on ring resonators within the Wilkinson power divider structure. The resonance wavelengths can be controlled by adjusting the inner and outer radii of the ring resonators. By precisely controlling the gap size between the ring resonators and the waveguides, efficient band-pass and band-stop filters are achieved.
Article
Materials Science, Multidisciplinary
Shiwen Wu, Ting-Nan Wu, Guoping Xiong
Summary: The use of titanium nitride in a metastructure design for efficient light absorption in solar energy harvesting applications has been demonstrated in this study. Through systematic optimization of the metastructure's geometric parameters using FDTD simulations, high absorption rates across a broad spectral range have been achieved, showing great potential for solar energy harvesting applications.
Article
Nanoscience & Nanotechnology
Jiyeah Rhie, Sung Ju Hong, Dukhyung Lee, Dohee Lee, Hyeong Seok Yun, Young-Mi Bahk, Dai-Sik Kim
Summary: The study introduces a chip-scaled reversible terahertz resonator that can achieve tunable THz spectroscopy through mechanical bending, explained by theoretical simulation. Analysis of the resonator's electrical characteristics and optical properties were conducted, demonstrating molecular sensing capabilities. The detection limits for molecules within the gap region were determined to be 80.5 pg for lactose and 64.4 pg for caffeine, showing promise for stable and functional THz sensing applications.
ACS APPLIED NANO MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Ryosuke Ota, Soh Uenoyama
Summary: In this study, aluminum nano-disk-based plasmonic filters were proposed to suppress slow emissions of barium fluoride scintillators while maintaining fast emissions and the usability of the slow component. The simulations and experiments showed that over 90% of the slow components could be adequately suppressed without sacrificing the fast components, indicating that aluminum nanodisks can be used as ultraviolet filters. The designed filters also maintained high timing performance, making them suitable for maximizing the potential of barium fluoride scintillators.
Article
Nanoscience & Nanotechnology
Apichat Phengdaam, Supeera Nootchanat, Ryousuke Ishikawa, Chutiparn Lertvachirapaiboon, Kazunari Shinbo, Keizo Kato, Sanong Ekgasit, Akira Baba
Summary: The study combined three different silver nanoprisms as light-trapping materials in organic solar cells to increase photocarrier generation through multiple plasmonic excitations. Under optimal conditions, the efficiency of the organic solar cells loaded with mixed silver nanoprisms was 7.9% higher than the reference.
JOURNAL OF SCIENCE-ADVANCED MATERIALS AND DEVICES
(2021)
Article
Chemistry, Physical
Tingting Zhou, Peng Zhang, Zhongzheng Yu, Min Tao, Donglei Zhou, Bai Yang, Tong Zhang
Summary: With the rapid development of IoT, smart agriculture has become crucial. The use of distributed sensors, particularly ammonia (NH3) sensing devices, is essential for constructing smart agriculture systems. However, traditional NH3 sensors with resistive heaters limit the development of room-temperature gas sensors, flexible electronics, and circuit integration in IoT applications. This research introduces a light-driven NH3 sensor based on plasmonic-functionalized metal carbides/nitrides (MXenes) for room-temperature, ultra-sensitive NH3 sensing in smart agriculture. The sensor utilizes in-situ oxidized niobium carbide (HT-Nb2CTx) as NH3 adsorption sites and conductive layers on flexible PET substrates, enabling large charge transfer. Moreover, plasmonic gold nanorods serve as local heating sites to promote NH3 sensing reactions under 980 nm light, leveraging the photo-thermal effects of localized surface plasmon resonance (LSPR). This innovative Au/HT-Nb2CTx-based gas sensor exhibits trace NH3 sensing ability with a low limit of detection (LOD=500 ppb) and full recovery, significantly outperforming counterparts without Au nanorods. Furthermore, a light-driven, portable NH3 sensing and alarming system, consisting of gas/temperature/humidity sensors, wirelessly connects to a mobile phone to enable round-the-clock environmental monitoring. This proof-of-concept sensing device demonstrates the potential application of Au/HT-Nb2CTx in next-generation NH3 monitoring systems for future smart agriculture.
Article
Engineering, Electrical & Electronic
Yi-Neng Pang, Bin Liu, Juan Liu, Sheng Peng Wan, Tao Wu, Xingdao He, Jinhui Yuan, Xian Zhou, Keping Long, Qiang Wu
Summary: A wearable optical fiber sensor for respiration monitoring based on SMS fiber structure has been proposed and demonstrated, showing high sensitivity and accurate measurement of respiration rate. Experimental results have shown that the sensor performs effectively across different individuals, with potential for wide application in the future.
IEEE SENSORS JOURNAL
(2021)
Article
Mathematics, Interdisciplinary Applications
Bin Liu, Wan Bo, Jiandong Liu, Juan Liu, Jiu-lin Shi, Jinhui Yuan, Xing-Dao He, Qiang Wu
Summary: This paper investigates the dynamic properties of dissipative solitons based on the CGL model, studying the harmonic and damped motion dynamics by considering the role of potential wells and the impact of viscosity. Numerical analysis was conducted to analyze the changes in period and momentum under different potential slopes and oscillating amplitudes.
CHAOS SOLITONS & FRACTALS
(2021)
Review
Engineering, Electrical & Electronic
Qiang Wu, Yuwei Qu, Juan Liu, Jinhui Yuan, Sheng-Peng Wan, Tao Wu, Xing-Dao He, Bin Liu, Dejun Liu, Youqiao Ma, Yuliya Semenova, Pengfei Wang, Xiangjun Xin, Gerald Farrell
Summary: SMS fiber structures, consisting of singlemode and multimode fibers, are commonly used in sensors for measuring various parameters. Different types of SMS structures have been developed to sense different measurands or improve sensitivity in optical fiber systems.
IEEE SENSORS JOURNAL
(2021)
Article
Engineering, Electrical & Electronic
Hou-Chang Li, Yuan-Kui Leng, Yun-Cheng Liao, Bin Liu, Wei Luo, Juan Liu, Jiu-Lin Shi, Jinhui Yuan, Heng-Yi Xu, Yong-Hua Xiong, Xing-Dao He, Qiang Wu
Summary: This article introduces a new double-taper microfiber Mach-Zehnder interferometer biosensor for Staphylococcus aureus detection. The sensor has a simple structure configuration, high sensitivity, good repeatability and specificity, wide detection range, and fast detection response time. It shows great potential in applications such as food safety inspection, biochemical sensing, diseases, and medical diagnostics.
IEEE SENSORS JOURNAL
(2022)
Article
Engineering, Electrical & Electronic
Wei Luo, Bin Liu, Juan Liu, Tao Wu, Qiang Liu, Meng-Yu Wang, Sheng-Peng Wan, Jinhui Yuan, Ping Lu, Danling Wang, Xing-Dao He, Qiang Wu
Summary: A tapered sidepolished (TSP) optical fiber sensor was used for high sensitivity human chorionic gonadotropin (hCG) detection. The sensor was functionalized with the primary antibody of hCG and showed an average wavelength shift of 0.82 nm when the hCG concentration was 0.1 mIU/mL. The sensor exhibited excellent specificity when tested with a mixed biomaterial solution.
IEEE SENSORS JOURNAL
(2022)
Article
Engineering, Electrical & Electronic
Wan Bo, Bin Liu, Juan Liu, Xing-Dao He, Jinhui Yuan, Qiang Wu
Summary: A fiber ring laser based on a side-polish fiber Mach-Zehnder interferometer is proposed for improving refractive index and torsion sensing. The experimental results show that the side-polished fiber MZI sensor has high sensitivity in measuring refractive index and torsion, achieving higher measurement resolution.
IEEE SENSORS JOURNAL
(2022)
Article
Optics
Yuwei Qu, Jinhui Yuan, Ke Wang, Shi Qiu, Xian Zhou, Binbin Yan, Qiang Wu, Bin Liu, Kuiru Wang, Xinzhu Sang, Keping Long, Chongxiu Yu
Summary: This paper proposes a novel X-shaped dual-core photonic crystal fiber polarization beam splitter (X-DC-PCF PBS) filled with an air hole gold rod based on Ge20Sb15Se65 glass. Based on the DC mode coupling theory and surface plasmon resonance effect, the coupling phenomena of the X-pol and Y-pol odd and even modes are analyzed. The results show that the proposed X-DC-PCF PBS has an ultra-wide polarization splitting bandwidth, short polarization splitting length, and ultra-low insertion loss.
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
(2022)
Article
Engineering, Multidisciplinary
Hou-Chang Li, Meng-Yu Wang, Bin Liu, Juan Liu, Qi Wang, Xing-Dao He, Hau Ping Chan, Danling Wang, Jinhui Yuan, Qiang Wu
Summary: A polymer-based micro-bottle resonator coated with graphene oxide film is proposed for improving relative humidity sensing performance. The resonator achieved high sensitivity and figure of merit by optimizing the concentration of GO dip impregnation solution. The proposed resonator also showed reduced cross-sensitivity between humidity and temperature after high-temperature annealing.
Article
Engineering, Electrical & Electronic
Yi-Neng Pang, Bin Liu, Juan Liu, Sheng-Peng Wan, Tao Wu, Jinhui Yuan, Xiangjun Xin, Xing-Dao He, Qiang Wu
Summary: A dual-channel fiber optic sensor encapsulated by PDMS has been proposed for simultaneous monitoring of two arteries for accurate blood pressure prediction. With the help of SVR algorithm, the sensor can continuously and accurately monitor the blood pressure and extract multiple pulse wave features for prediction. Experimental results show that dual-channel blood pressure monitoring is more accurate than single-channel monitoring.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2022)
Article
Engineering, Electrical & Electronic
Jiandong Liu, Liang Chu, Bin Liu, Juan Liu, Yingying Hu, Xing-Dao He, Jinhui Yuan, Yangbo Zhou, Dejun Liu, Zabih Ghassemlooy, James Martin, Yong Qing Fu, Qiang Wu
Summary: This study proposes and experimentally demonstrates a highly sensitive hydrogen sensor coated with Pt/WO3 powder and erbium-doped fiber amplifier (EDFA). The sensor is constructed by splicing a tapered small-diameter coreless fiber (TSDCF) between two single-mode fibers (SMFs). The Pt/WO3 powder on the surface of a polydimethylsiloxane (PDMS) film coated on the TSDCF structure serves as the hydrogen-sensitive material. An EDFA is introduced to improve the Q factor and resolution of the sensor's output spectrum. The sensor exhibits good stability with a light intensity fluctuation of less than 1.26 dB over a 30-minute duration, and a maximum light intensity variation and sensitivity of -32.41 dB and -21.25 dB/%, respectively, when the hydrogen concentration varies from 0% to 1.44%.
IEEE SENSORS JOURNAL
(2023)
Article
Engineering, Electrical & Electronic
Hou-Chang Li, Juan Liu, Xing-Dao He, Jinhui Yuan, Qiang Wu, Bin Liu
Summary: A novel side-polished long-period fiber grating (LPFG) sensor with graphene oxide (GO) nano-film coating is proposed and experimentally validated. The side-polished LPFG provides stronger evanescent field and higher refractive index sensitivity. The fabricated sensors demonstrate high sensitivity, low-cost materials, and robust performance, breaking the limitations of the EDA method for grating preparation.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2023)
Article
Engineering, Electrical & Electronic
Ru-Lei Xia, Bin Liu, Yingying Hu, Juan Liu, Yue Fu, Xing-Dao He, Ping Lu, Gerald Farrell, Jinhui Yuan, Qiang Wu
Summary: The current global outbreak of coronavirus (COVID-19) is a severe threat to human health, and rapid, low-cost, and accurate antigen detection methods are crucial for disease diagnosis. This study validates a highly sensitive whispering gallery mode (WGM) optical cylindrical microresonator (CMR) for bioimmunoassay detection, specifically targeting the nucleocapsid protein (N-Protein) of severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2). The method offers advantages such as rapid assay, lower expense, easy preparation, and miniaturization, making it potentially valuable in the field of biochemistry and biomedical detection.
IEEE SENSORS JOURNAL
(2023)
Article
Chemistry, Analytical
Jiandong Liu, Bin Liu, Juan Liu, Xing-Dao He, Jinhui Yuan, Zabih Ghassemlooy, Hamdi Torun, Yong-Qing Fu, Xuewu Dai, Wai Pang Ng, Richard Binns, Qiang Wu
Summary: A high quality factor (Q-factor) optical fiber interferometer based biosensing platform, combining single mode-core-only-single mode fiber (SCS) and multimode interference effect, is developed for ultra-high sensitivity biosensing. This biosensor is capable of effectively detecting concentrations of Staphylococcus aureus from 10 to 105 CFU/mL, with good sensitivity, stability, reproducibility and specificity, showing great potentials in diagnostics.
Article
Biophysics
Shi Qiu, Bin Liu, Yuankui Leng, Edward Fox, Xian Zhou, Binbin Yan, Xinzhu Sang, Keping Long, Yanjun Fu, Xingdao He, Jinhui Yuan, Gerald Farrell, Qiang Wu
Summary: This paper presents a single mode-tapered seven core-single mode fiber ring laser biosensor for rapid detection of low concentrations of Salmonella Typhimurium. The experimental results show that the biosensor can detect S. Typhimurium in less than 20 minutes with a wavelength shift of up to -0.906 nm. At a concentration of 1 cell/mL, the biosensor can detect S. Typhimurium in 9 out of 11 samples with a result of -0.183 nm. The biosensor also shows potential applications in food safety monitoring and medical diagnostics.
BIOSENSORS & BIOELECTRONICS
(2023)
Article
Computer Science, Information Systems
Shuang Wang, Bin Liu, Yu-Lin Wang, Yingying Hu, Juan Liu, Xing-Dao He, Jinhui Yuan, Qiang Wu
Summary: This research proposes a wearable plastic-optical-fiber sensing system based on machine learning for human motion recognition. By monitoring joint positions, it can accurately identify six types of human movements. This system has great applications in human motion recognition and AR/VR.
IEEE INTERNET OF THINGS JOURNAL
(2023)
