Article
Chemistry, Multidisciplinary
Pau Guell-Grau, Francesc Pi, Rosa Villa, Olof Eskilson, Daniel Aili, Josep Nogues, Borja Sepulveda, Mar Alvarez
Summary: The first stretchable plasmonic-enhanced and wrinkled Fabry-Perot (FP) cavities are demonstrated, which are composed of self-embedded arrays of Au nanostructures at controlled depths into elastomer films. These novel structures have unprecedented optomechanical effects and can be used for strain sensing.
ADVANCED MATERIALS
(2022)
Review
Materials Science, Multidisciplinary
Xinyu Wen, Shikai Deng
Summary: The rational design of novel plasmonic nanostructures enables high-performance sensing. Patterned nanostructures and hybrid nanostructures with functional materials show potential to overcome sensing limitations and improve sensitivity and selectivity. Further studies on plasmonic nanostructures with low-loss materials, chirality characteristics, novel devices, and advanced fabrications provide outlooks for high-performance sensing.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Physics, Applied
Domna G. Kotsifaki, Viet Giang Truong, Sile Nic Chormaic
Summary: This work demonstrates the sequential trapping of 20nm particles using metamaterial plasmonic optical tweezers, with the investigation of multiple trapping via trap stiffness measurements for various trapping configurations. The plasmonic configuration could be utilized as a light-driven nanoscale sorting device, offering an alternative method to trap multiple nanoparticles at distinct hotspots and control mass transport on the nanoscale.
APPLIED PHYSICS LETTERS
(2021)
Article
Optics
Tulika Khanikar, Vinod Kumar Singh
Summary: A compact and ultra-convenient fiber optic surface plasmon resonance sensor is proposed, utilizing a V groove fiber. The sensor demonstrates high wavelength sensitivity, wide range of analyte detection, convenient design and fabrication, as well as competitive sensing performance.
Article
Chemistry, Multidisciplinary
Subhavna Juneja, Jaspal Singh, Roshni Thapa, R. K. Soni, Jaydeep Bhattacharya
Summary: The text discusses the trend of sustainable development driving modern technology, emphasizing the importance of adopting greener fabrication processes in the manufacturing sector. A bi-functional hybrid system was synthesized using a biosynthetic reduction strategy, showing strong surface-enhanced Raman scattering characteristics.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Multidisciplinary Sciences
Sang-Hyeon Nam, Myungjoon Kim, Nayoung Kim, Donghwi Cho, Myungwoo Choi, Jun Hyung Park, Jonghwa Shin, Seokwoo Jeon
Summary: This study tackles the challenges faced in interference lithography and proximity-field nanopatterning (PnP) by applying an inverse design to the PnP process. The research successfully fabricates a 2D rectangular array of nanochannels, which has not been reported in traditional PnP with normally incident light. This work provides a versatile platform for nanomaterial fabrication.
Article
Optics
Jian Zhu, Li-na Meng, Guo-jun Weng, Jian-jun Li, Jun-wu Zhao
Summary: The plasmonic absorption properties of bimetallic Au-Pt core-shell nanorods were investigated theoretically, with a focus on the environmental dielectric constant's impact on the absorption intensity comparison between different peaks. Increasing the environmental dielectric constant can enhance the absorption discrepancy between the Pt-L and Au-T bands, improving refractive index sensing performance. This sensing can be further improved by increasing the Pt coating thickness or aspect ratio of inner Au nanorod.
EUROPEAN PHYSICAL JOURNAL D
(2021)
Article
Engineering, Electrical & Electronic
Ajay Kumar Agrawal, Akanksha Ninawe, Anuj Dhawan
Summary: This paper reports a significantly improved sensing response of a plasmonic sensor based on a nanopillar array separated from a thin film, operated using the Kretschmann configuration. The sensor shows high sensitivity and figure of merit for both localized and bulk sensing responses. It can be easily fabricated and has great potential for biosensing applications.
IEEE SENSORS JOURNAL
(2022)
Article
Physics, Applied
Jinyong Hu, Chuxuan Tan, Wangdi Bai, Yiming Li, Qi Lin, Lingling Wang
Summary: By introducing a dielectric nanocavity, the surface lattice resonances (SLRs) of metal nanostructure arrays can be effectively controlled, improving their spectral features and resonance intensity. This work provides a promising candidate for the development of high-efficiency plasmonic sensors.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Article
Nanoscience & Nanotechnology
Macilia Braik, Theo Geronimi-Jourdain, Stephanie Lau-Truong, Abderrahmane Belkhir, Sarra Gam-Derouich, Alexandre Chevillot-Biraud, Claire Mangeney, Nordin Felidj
Summary: When metallic nanostructures (NSs) are organized in periodic arrangements, they can support plasmonic surface lattice (SL) resonances, which differ significantly from localized surface plasmon (LSP) resonances. In this paper, we demonstrate the excitation of grazing order diffraction within the metasurface can lead to the hybridization of surface lattice (SL) plasmon resonances, resulting in the emergence of bonding and anti-bonding modes. We fill the gap in existing literature by experimentally proving the hybridization of SL plasmon resonances, and show that the interaction between hybridized SL resonances can be controlled by adjusting the distance between particles.
Article
Nanoscience & Nanotechnology
Huimin Wang, Liqing Huang, Yu Zhang, Yakun Cai, Lin Cheng, Lipeng Zhai, You Liu, Xiangzhe Zhang, Jingping Zhu
Summary: In this study, a method was proposed to improve the refractive index sensitivity of hierarchical aluminum nanocap arrays (HAlNAs) for RI sensing applications. By adjusting the deposited Al thickness, deposition rate, and period, tunable plasmonic and sensing properties of HAlNAs could be achieved. The experimental results confirmed that the RI sensitivity of the sensor was primarily related to the period and deposited Al thickness.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Physical
Yuanhai Lin, Deqing Che, Heng Guo, Junsheng Wang
Summary: This research presents the use of planar plasmonic tau-shaped structure arrays to achieve significantly enhanced chiroptical responses for single-molecule detection. The chiroptical responses can be efficiently manipulated by adjusting the array parameters and structural chirality, and the arrays enable ultrasensitive detection of single-molecule proteins.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Chemistry, Multidisciplinary
Evgeniia M. Khairullina, Maxim S. Panov, Vladimir S. Andriianov, Karolis Ratautas, Ilya I. Tumkin, Gediminas Raciukaitis
Summary: Selective Surface Activation Induced by Laser (SSAIL) method was used to fabricate metallic and bimetallic structures on glass and glass-ceramics for non-enzymatic detection of biologically essential analytes like glucose. The fabricated electrodes showed high sensitivity, wide detection range, selectivity, and long-term stability, with the most promising results seen in copper-gold electrode structures on glass-ceramics.
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
Engineering, Electrical & Electronic
Mohammad Rakibul Islam, A. N. M. Iftekher, Mariea Sharaf Anzum, Muntaha Rahman, Sadia Siraz
Summary: The sensor proposed in this paper utilizes gold and aluminium doped zinc oxide as plasmonic materials, displaying a unique dispersion relation with double resonance peaks, high sensitivity and resolution, as well as the ability to detect analytes within a wide range of refractive indices. A new parameter, double peak sensitivity, has been introduced to evaluate the sensor's performance.
IEEE SENSORS JOURNAL
(2022)
Article
Chemistry, Physical
Syaahidah Abdul Razak, Abdul Hanif Mahadi, Roshan Thotagamuge, Didik Prasetyoko, Hasliza Bahruji
Summary: Hydrogen gas production from carbon-free molecules utilizing solar energy is a pathway for zero carbon emission energy. TiO2 photocatalysts have been evaluated for generating carbon-free hydrogen from NH3 solution, and alkylamines molecules show higher reactivity for hydrogen production than NH3.
Article
Chemistry, Analytical
Chung-Ting Chou Chao, Muhammad Raziq Rahimi Kooh, Chee Ming Lim, Roshan Thotagamuge, Abdul Hanif Mahadi, Yuan-Fong Chou Chau
Summary: This article presents a multiple-channel plasmonic metamaterial absorber (PMA) that can tune three or five narrowband absorption frequencies in the visible range, making it suitable for refractive index and temperature sensing applications.
Article
Optics
Chung-Ting Chou Chao, Yuan-Fong Chou Chau
Summary: We propose a susceptible multichannel plasmonic sensor for sensing refractive index (RI) and temperature media. The designed structure consists of an elliptical-shaped ring resonator and four metal nanorods side-coupled to two separated metal-insulator-metal waveguides. The structure supports five channels of Fano resonance modes, providing excellent sensing performance with maximum sensitivity values of 4500 nm/RIU for RI sensing and 1.00 nm/degrees C for temperature sensing.
Article
Anatomy & Morphology
Sy-Hann Chen, Yi-Wen Hong, Yuan-Fong Chou Chau, Hung Ji Huang, Hai-Pang Chiang
Summary: Silver-nanoparticles deposited on indium tin oxide (AgNPs/ITO) with different O-2-plasma treatment times are used as the anode window substrate for polymer light-emitting diodes (PLED). O-2-plasma treatment of 10 minutes results in a significantly higher current efficiency of 3.33 cd/A compared to the reference PLED (1.00 cd/A). The optimal PLED with AgNPs/ITO shows a 3.24-fold increase in mean current efficiency and a 480% enhancement in electroluminescence intensity compared to the reference PLED. O-2-plasma treatment is an easy and scalable method for optimizing the localized surface plasmon resonance effect of metal nanoparticles, making it highly suitable for optoelectronic applications.
MICROSCOPY RESEARCH AND TECHNIQUE
(2023)
Article
Chemistry, Physical
Chung-Ting Chou Chao, Sy-Hann Chen, Hung Ji Huang, Yuan-Fong Chou Chau
Summary: In this study, a plasmonic metamaterial absorber (PMA) with a quintuple-band design was developed, which operates in both the near-infrared and mid-infrared regions. The absorptance of the proposed PMA for five different modes was measured to be 98.02%, 99.47%, 98.02%, 99.47%, and 96.09% respectively. The high absorptance is attributed to the hybridization of localized gap, cavity, and surface plasmon resonance, which can be explained using an inductance and capacitance circuit model. The effects of structure parameters on the absorptance spectrum were also investigated, providing valuable guidance for designing high-performance PMA.
Article
Chemistry, Physical
Yu Ming Tan, Nursafwanah Ramizah Sabaruddin, Chee Ming Lim, Chung-Ting Chou Chao, Roshan Thotagamuge, Muhammad Raziq Rahimi Kooh, Yuan-Fong Chou Chau
Summary: This article proposes a multimode Fano resonance-based sensor for detecting refractive index, alcohol concentration, and temperature. The sensor consists of a metal-insulator-metal waveguide with an oblique path in the pentagon-ring-shaped resonator. Simulation results show that the oblique path greatly enhances the sensing performance. High refractive index sensitivity and sensitivity to alcohol concentration and temperature were achieved. This work provides a high-sensitivity plasmonic sensor design strategy for various sensing applications.
Article
Crystallography
Chung-Ting Chou Chao, Sy-Hann Chen, Hung Ji Huang, Muhammad Raziq Rahimi Kooh, Chee Ming Lim, Roshan Thotagamuge, Abdul Hanif Mahadi, Yuan-Fong Chou Chau
Summary: This article presents a photonic crystal fiber (PCF) temperature sensor with a flat, metal-coated trapezoidal surface. The PCF consists of two layers of elliptical air holes and a polished trapezoidal surface for temperature sensing. External sensing approach is used to deposit a thin silver layer on the reflective surface, with a thin SiO2 film acting as an oxidation-resistant coating. The top elliptical air hole serves as the interface for energy transformation, achieving high temperature sensitivity and resolution in a wide temperature range. This research has significant potential for sensor design and real-time temperature remote sensing applications.
Article
Multidisciplinary Sciences
Yashas Balasooriya, Pubudu Samarasekara, Chee Ming Lim, Yuan-Fong Chou Chau, Muhammad Raziq Rahimi Kooh, Roshan Thotagamuge
Summary: Novel Cu-nitrogen doped graphene nanocomposite catalysts were developed for investigating Cu-nitrogen doped fuel cell cathode catalysts. Density functional theory calculations were performed to study the oxygen reduction reaction (ORR) on these catalysts in low-temperature fuel cells. The results showed that Cu2-N8/Gr and Cu-N4/Gr structures are more stable and support spontaneous ORR, with Cu-N4/Gr showing potential for H2O2 generation. Cu2-N6/Gr was found to be less favorable in ORR.
Article
Materials Science, Multidisciplinary
Cheng Hung Chu, Gu Yu Lin, Pin Chieh Wu, Wei-Yang Chou, Sy-Hann Chen, Hsing-Chih Liang, Hai -Pang Chiang
Summary: This study proposes an innovative plasmonic sensing method using MIM nanohole arrays and AgNPs to measure refractive index changes in the surrounding medium. The hybrid substrates prepared using a combination of NSL, reactive ion etching, and plasmonic site-selective photocatalytic reaction show potentials for optical sensing applications.
RESULTS IN PHYSICS
(2023)
Article
Biochemistry & Molecular Biology
Yashas Balasooriya, Pubudu Samarasekara, Chee Ming Lim, Yuan-Fong Chou Chau, Muhammad Raziq Rahimi Kooh, Roshan Thotagamuge
Summary: This study used density functional theory (DFT) to investigate the influence of temperature on the performance of a novel Cu-nitrogen-doped graphene Cu-2-N-8/Gr nanocomposite as a catalyst for the oxygen reduction reaction (ORR) in fuel cell applications. The study found that the structural stability of the catalyst remains unaffected as the temperature varies, but the stability of the ORR steps slightly decreases with increasing temperature. Interestingly, the optimization revealed the absence of single OH and H2O intermediates during the reactions, instead forming dual OH intermediates. Free energy calculations showed that the catalyst supports spontaneous ORR at all temperatures, with the highest cell potential recorded at 393.15 K. The Cu-2-N-8/Gr catalyst structure demonstrated a reduced favorability for the H2O2 generation, making it a promising candidate for ORR catalysis.
