Article
Optics
Jiaqi Niu, Yueqi Zhai, Qingqing Han, Jingquan Liu, Bin Yang
Summary: This research demonstrates the tuning of the coupling coefficient between two metallic split-ring resonators by modeling metals as perfect electric conductors to satisfy a particular condition. Experimental observation of a BIC-induced cloaking effect linked to the dissipation loss of constitutive materials provides an alternative strategy for constructing BICs in metallic metasurfaces.
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
Chemistry, Physical
Enduo Gao, Hongjian Li, Chao Liu, Banxian Ruan, Min Li, Baihui Zhang, Zhenbin Zhang
Summary: This paper presents a dual-band ultra-high absorber composed of graphene strips and nanoribbons, which can dynamically regulate quasi-bound states and Fabry-Perot resonance mode. The absorber demonstrates high modulation depth, low insertion loss, and large dephasing time.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Crystallography
Abdellatif Gueddida, Yan Pennec, Ana Luiza Silveira Fiates, Michael Johannes Vellekoop, Bernard Bonello, Bahram Djafari-Rouhani
Summary: In this study, a numerical investigation was conducted on an acoustic sensor based on a cylindrical resonator to monitor the acoustic properties of liquids flowing in a tube. The research demonstrates the presence of high-quality factor resonances associated with the acoustic properties of the liquid, due to the impedance mismatch between the liquid and the solid washer. The sensitivity of the resonances to the acoustic properties of the liquid was investigated by varying the geometrical parameters.
Article
Multidisciplinary Sciences
Shiva Hayati Raad, Zahra Atlasbaf
Summary: The study focuses on enhancing the extinction cross-section of a dielectric cylinder by arranging graphene-coated spherical nanoparticles around it. By increasing the number of longitudinal plasmonic arrays in different azimuthal directions, double pronounced Fano resonances are observed.
SCIENTIFIC REPORTS
(2021)
Article
Chemistry, Multidisciplinary
I. Brian Becerril-Castro, Franklin Munoz-Munoz, Ana B. Castro-Cesena, Ana L. Gonzalez, Ramon A. Alvarez-Puebla, Jose M. Romo-Herrera
Summary: Plasmonic reversible gas sensors are designed for live monitoring of carbon monoxide concentration in closed environments, with a detection range from 10 to 40 ppm. The sensor is sensitive, selective, reversible, and robust, and can be used for monitoring CO levels as well as other gas species with appropriate functionalization.
Article
Chemistry, Multidisciplinary
Shu-Cheng Lo, Sheng-Hann Wang, Ting-Wei Chang, Kuang-Li Lee, Ruey-Lin Chern, Pei-Kuen Wei
Summary: In this study, surface charges in dual gold nanoslit electrodes were used to improve the detection limit of surface plasmon resonance (SPR). The change in surface charge was sensitively detected by measuring the spectral shifts of nanoslit arrays.
Article
Multidisciplinary Sciences
Souvik Biswas, William S. Whitney, Meir Y. Grajower, Kenji Watanabe, Takashi Taniguchi, Hans A. Bechtel, George R. Rossman, Harry A. Atwater
Summary: Black phosphorus offers promise for infrared and visible photonics with the ability to modulate its optical conductivity by tuning the charge density in the induced two-dimensional electron gas. By manipulating the free carrier-dominated intraband response, black phosphorus demonstrates polarization-dependent behavior with moderate doping density. These results suggest new optical functions for emerging photonics applications.
Article
Chemistry, Physical
Pankaj Pathania, Manmohan Singh Shishodia
Summary: The study proposes a Fano resonance-based refractive index sensor for blood plasma sensing using plasmonic nanomatryoshka. By optimizing the interaction between hybridized modes in the nanomatryoshka, higher sensitivity and figure of merit are achieved, allowing for fast label-free detection of specific antibodies and their concentration in blood plasma.
Article
Optics
Lucca Kuehner, Fedja J. Wendisch, Alexander A. Antonov, Johannes Buerger, Ludwig Huettenhofer, Leonardo de S. Menezes, Stefan A. Maier, Maxim V. Gorkunov, Yuri Kivshar, Andreas Tittl
Summary: This research introduces a novel nanofabrication approach to effectively control resonance features and nanophotonic functionalities in all-dielectric metasurfaces by unlocking the height of individual resonators. Using this approach, an optical all-dielectric metasurface with maximum intrinsic chirality is demonstrated, which selectively responds to light of a particular circular polarization depending on the structural handedness.
LIGHT-SCIENCE & APPLICATIONS
(2023)
Article
Nanoscience & Nanotechnology
Giorgio Quaranta, Fabian Lutolf, Olivier J. F. Martin, Benjamin Gallinet
Summary: Light coupling in waveguides has been extensively studied in various contexts, and narrowband diffraction is reported using a Fano interference effect in hybrid nanostructures. The excitation of hybrid plasmonic and bulk waveguides allows for selectivity in bandwidth and reduction of zeroth order. The diffraction efficiency, angle, and wavelength can be solely tuned by the thin film thickness, and applications are foreseen in optical devices requiring color-selective coupling or dispersive properties.
Article
Chemistry, Multidisciplinary
Theodoros D. Bouloumis, Domna G. Kotsifaki, Sile Nic Chormaic
Summary: By using proper nanocavity design and excitation, the self-induced back-action (SIBA) effect combined with Fano resonance has achieved stable trapping of 20 nm gold particles in metamaterial tweezers with low excitation intensity. Simulations reveal the existence of two groups of hotspots on the plasmonic array, which have tunable trap stiffnesses and can be used for sorting particles and biological molecules based on their characteristics.
Article
Chemistry, Multidisciplinary
Yan Zheng, Ping Duan, Yu Zhou, Chuan Li, Dahai Zhou, Yaping Wang, Li-Chuan Chen, Zhiyu Zhu, Xiaohui Li, Jie Bai, Kai Qu, Tengyang Gao, Jia Shi, Junyang Liu, Qian-Chong Zhang, Zhong-Ning Chen, Wenjing Hong
Summary: Fano resonance in single-molecule junctions is created by interaction between discrete and continuous molecular orbitals, allowing effective modulation of electron transport through interference. Direct observation of Fano resonance has been challenging due to the disappearance of discrete orbitals. Experimental demonstration of Fano resonance in electrochemical gated single-molecule conductance provides insights for designing interference-based electronic devices.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Multidisciplinary Sciences
Sherif M. Sherif, Mohamed A. Swillam
Summary: We propose a CMOS compatible silicon-based sensor for mid infrared sensing, which exhibits high sensitivity, distinct Fano resonance, and limited insertion loss.
SCIENTIFIC REPORTS
(2023)
Article
Chemistry, Multidisciplinary
Zhiyu Wang, Ya-Lun Ho, Tun Cao, Takashi Yatsui, Jean-Jacques Delaunay
Summary: The study presents a one-dimensional nanostructure with rich Fano resonances induced by interference between a lossy background provided by a metal thin film and a discrete optical Tamm state. A drastic change in the Fano line shape can be achieved by controlling the metal thin film, leading from a narrowband perfect absorber to a narrowband perfect reflector.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Optics
Harry Miyosi Silalahi, Yu-Hsuan Tsai, Kuang-Li Lee, Pei-Kuen Wei, Chia-Yi Huang
Summary: This study presents a simple design for shifting the resonance wavelength of silver nanoslits using an EWOD cell, demonstrating the ability to shift the resonance wavelength by moving a droplet with an electric field. The wavelength shift of 135 nm can be achieved by adjusting the electric field, making it suitable for high-performance electro-optical devices.
Article
Engineering, Electrical & Electronic
Yi-Hsin Tai, A. Syazwan A. Kamal, Young-Jae Park, Po-Cheng Tsai, Ya-Lun Ho, Pei-Kuen Wei, Hirofumi Daiguji, Jean-Jacques Delaunay
Summary: A tapered fiber sensor was developed to detect the presence of condensed water and frost, showing different responses to liquid water and frost by selectively scattering light and altering transmission intensity.
IEEE SENSORS JOURNAL
(2021)
Article
Biophysics
Han-Yun Hsieh, Ray Chang, Yung-Yu Huang, Po-Han Juan, Hidetoshi Tahara, Kuan-Yi Lee, Di Ngoc Kha Vo, Ming-Han Tsai, Pei-Kuen Wei, Horn-Jiunn Sheen, Yu-Jui Fan
Summary: This study successfully detected the DNA sequence of LMP1 using a combination of microfluidic PCR and gold nanoslit-based SPR sensor, achieving rapid and accurate analytical procedures, as well as enhancing the detection efficiency of DNA extracted from EBV-positive cells.
BIOSENSORS & BIOELECTRONICS
(2022)
Article
Biophysics
Yi-Hsin Tai, Shu-Cheng Lo, Kevin Montagne, Po-Cheng Tsai, Cheng-Chieh Liao, Sheng-Hann Wang, Iuan-Sheau Chin, Di Xing, Ya-Lun Ho, Nien-Tsu Huang, Pei-Kuen Wei, Jean-Jacques Delaunay
Summary: An osmium-coated lensed fiber probe and a silver-coated black silicon substrate were used to generate a dielectrophoretic force for trapping and detecting bacteria. By controlling the frequency of the AC voltage, bacteria concentration could be rapidly identified by recording the Raman peak variation.
BIOSENSORS & BIOELECTRONICS
(2021)
Article
Polymer Science
Yi-Jung Lu, Han-Yun Hsieh, Wen-Chang Kuo, Pei-Kuen Wei, Horn-Jiunn Sheen, Hidetoshi Tahara, Te-Wei Chiu, Yu-Jui Fan
Summary: The study proposed a multiplex detection system by integrating LSPR sensing array and microfluidic channels, proving successful in detecting different targets in parallel channels.
Article
Biotechnology & Applied Microbiology
Sheng-Hann Wang, Chia-Wen Kuo, Shu-Cheng Lo, Wing Kiu Yeung, Ting-Wei Chang, Pei-Kuen Wei
Summary: In this study, a spectral image contrast-based flow digital nanoplasmon-metry method was developed to amplify and quickly detect the peak shift signal of gold nanoparticles (AuNPs) by comparing the scattering image brightness in two neighboring wavelength bands near the local surface plasmon resonance (LSPR) peak. The method provides an ultrahigh signal-to-noise ratio and has a lower sample volume requirement compared to conventional LSPR immunoassays. It demonstrates high sensitivity, selectivity, and a broad dynamic detection range.
JOURNAL OF NANOBIOTECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Cheng-Chuan Chen, Shu-Cheng Lo, Pei-Kuen Wei
Summary: Label-free detection of mercuric ions in aqueous solutions was achieved using capped gold nanoslit arrays combined with electrochemical sensing technique. The system showed high sensitivity and selectivity towards Hg2+ ions, with a detection range from 100 μM to 10 nM and a detection limit of 1 μM. The developed system has the potential to be applied in detecting various chemicals and biomolecules.
Article
Nanoscience & Nanotechnology
Chia-Wen Kuo, Sheng-Hann Wang, Shu-Cheng Lo, Wei-Han Yong, Ya-Lun Ho, Jean-Jacques Delaunay, Wan-Shao Tsai, Pei-Kuen Wei
Summary: The study proposes a method for sensitive detection of small molecules by coupling image dipoles of gold nanoparticles with Fano resonance of capped gold nanoslits. The coupling mechanism was verified through calculations and experiments, showing potential for detecting low concentrations of small molecules. This resonant coupling significantly pushes the sensitivity boundary, with the detection limit reported to be 3 orders of magnitude lower than prism-based SPR.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Engineering, Environmental
Prakhar Dutta, Ting-Yu Su, An-Ying Fu, Mei-Chi Chang, Yu-Jie Guo, I-Jung Tsai, Pei-Kuen Wei, Yu-Sheng Chang, Ching-Yu Lin, Yu-Jui Fan
Summary: In this study, a portable solar-powered centrifuge was developed to provide access to centrifugation in remote areas. The device showed high yield and plasma purity in a short time, and can be used for various purposes. The integration of smartphone reader and nanoplamonic chip allows for evaluation of autoantibodies through image analysis. The device can operate under different conditions with minimal energy requirement, making it suitable for areas without electricity.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Optics
Yi-Ru Li, Kuang-Li Lee, Kuan-Ming Chen, Yun Cheng Lu, Pin Chieh Wu, Sy-Hann Chen, Jiun-Haw Lee, Pei-Kuen Wei
Summary: This paper proposes a measurement method for sensitive and label-free detection of virus-like particles (VLPs) using color images of nanoplasmonic sensing chips. The experimental results show that the image contrast method has good linearity and can achieve direct detection of SARS-CoV-2 VLPs in a short period of time.
Article
Chemistry, Analytical
Han-Yun Hsieh, Jia-Xian Luo, Yi-Hong Shen, Shu-Cheng Lo, Yi-Chiung Hsu, Hidetoshi Tahara, Yu-Jui Fan, Pei-Kuen Wei, Horn-Jiunn Sheen
Summary: This study developed a rapid and highly sensitive EBV screening method using a nanofluidic preconcentrator integrated with a nanoslit Fano resonance biosensor to detect latent membrane protein 1 (LMP1) for EBV diagnosis. Through nanoimprinting and aluminum deposition, a low-cost nanoslit plasmonic sensing chip was mass-produced, achieving a limit of detection of 100 pg/ml and a sensing range of 100 pg/ml to 10 μg/ml.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Optics
Shu-cheng Lo, Chia-wei Lee, Ruey-lin Chern, Pei-kuen Wei
Summary: In this work, high-performance surface plasmonic sensors using gold nanostructures and Bragg photonic structures are presented. The hybrid Tamm-plasmon mode, resulting from the Fano coupling between higher order Tatum plasmon states and Bloch-wave surface plasmon polariton on the gold nanoslit array, demonstrates high surface sensitivity and resonant quality. The experimental results show that the hybrid mode has significantly higher sensitivity and better signal-to-noise ratios in biomolecular interaction measurement.
Article
Chemistry, Analytical
Shu-Cheng Lo, Shao-Sian Li, Wen-Fai Yang, Kuang-Chong Wu, Pei-Kuen Wei, Horn-Jiunn Sheen, Yu-Jui Fan
Summary: This paper presents a new micro/nanostructure co-hot embossing technique for the integration of gold-capped nanostructures as localized surface plasmon resonance (SPR) sensors into a microfluidic channel. The advantage of this technique is that it eliminates the need for alignment between the SPR sensors and the microfluidic channel during bonding. The integrated SPR sensor and microfluidic channel were characterized, and the sensitivity of the SPR sensor to refractive index was determined using different concentrations of glycerol solutions. The SPR sensor was also used for quantifying latent membrane protein (LMP-1) by modifying anti-LMP-1 on its surface, and a calibration curve was created using different concentrations of LMP-1 samples.
Article
Chemistry, Multidisciplinary
Shu-Cheng Lo, Chun-Wei Yeh, Sheng-Hann Wang, Chia-Wen Kuo, Kuang-Li Lee, Ruey-Lin Chern, Pei-Kuen Wei
Summary: The research demonstrates that Fano resonance in an aluminum capped nanoslit array can eliminate the signal of bulk refractive index changes, enabling measurement of only the bio-layer thickness without interference.
Article
Chemistry, Analytical
Wing Kiu Yeung, Shu-Cheng Lo, Sheng-Hann Wang, Pei-Kuen Wei, Ji-Yen Cheng
Summary: The COVID-19 pandemic has highlighted the need for a highly specific and rapid diagnostic system. A spectral imaging-based surface plasmon resonance platform combined with an integrated microfluidic biosensor is proposed as a promising alternative for infectious diseases, offering safe and straightforward use. The use of unmodified PEG to control probe density has shown to be a particularly promising functionalization strategy in SPR spectral imaging assays for highly specific detection of COVID-19 target sequences.
