Article
Optics
P. Moroshkin, J. Plumitallo, T. Ochiai, R. Osgood III, Jimmy Xu
Summary: The optical rectification effect is observed in periodically structured metal films with broken inversion symmetry. The finite width of the metasurface and the proximity of its edges contribute to the rectification current, which is enhanced at surface plasmon polariton resonances. Position-and angle-resolved measurements show that this mechanism is more efficient than other symmetry-breaking mechanisms. The existing theory of optical rectification partially explains the observed phenomena.
Article
Optics
Polina E. Zimnyakova, Daria O. Ignatyeva, Andrey N. Kalish, Xiufeng Han, Vladimir Belotelov
Summary: This article reports on the phenomenon of plasmonic dichroism observed in magnetic materials with transverse magnetization under excitation of surface plasmon polariton waves. The effect is enhanced by the interplay between two magnetization-dependent contributions to material absorption. Electromagnetic modeling demonstrates the possibility of using counter-propagating plasmons to deterministically write magnetic states.
Article
Chemistry, Physical
Darya Votkina, Pavel Petunin, Elena Miliutina, Andrii Trelin, Oleksiy Lyutakov, Vaclav Svorcik, Gerard Audran, Jeffrey Havot, Rashid Valiev, Lenara I. Valiulina, Jean-Patrick Joly, Yusuke Yamauchi, Junais Habeeb Mokkath, Joel Henzie, Olga Guselnikova, Sylvain R. A. Marque, Pavel Postnikov
Summary: The local surface plasmon resonances of gold nanoparticles can provide alternative pathways for organic chemical reactions. The role of chemical factors associated with organic reactants, such as molecular structure and electronic effects, is often underestimated. In this study, we synthesized alkoxyamines with different structures and used spectroscopy to investigate the kinetics of plasmon-induced homolysis. The results show that the intramolecular excitation mechanism plays a key role in plasmon-induced homolysis, which suggests that electronic structures may also be important in other plasmon catalysis reactions.
Review
Optics
Chinmaya Kar, Shuvendu Jena, Dinesh V. Udupa, K. Divakar Rao
Summary: This article reviews the research and development of Tamm plasmon polariton excited at the interface of a metal and a distributed Bragg reflector. It provides an easy planar solution with huge field enhancement at the interface and does not require any phase matching method for its excitation. The article also discusses the various properties and applications of Tamm plasmon modes.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Nanoscience & Nanotechnology
Huanhuan Su, Shan Wu, Yuhan Yang, Qing Leng, Lei Huang, Junqi Fu, Qianjin Wang, Hui Liu, Lin Zhou
Summary: Research has found that the surface plasmon polariton (SPP)-assisted photoluminescence enhancement of MoS2 monolayer via a suspended periodic metallic (SPM) structure can achieve more than two orders of magnitude enhancement, primarily due to concentrated local field and quantum yield amplification. This method may provide a powerful way to boost two-dimensional exciton emission compared to nanoparticle-based geometries reported so far.
Article
Nanoscience & Nanotechnology
Huanhuan Su, Shan Wu, Yuhan Yang, Qing Leng, Lei Huang, Junqi Fu, Qianjin Wang, Hui Liu, Lin Zhou
Summary: In this study, a suspended periodic metallic (SPM) structure was used to achieve surface plasmon polariton (SPP)-assisted photoluminescence (PL) enhancement of MoS2 monolayer, providing more than two orders of magnitude enhancement without the need for metallic nanoparticle-based plasmonic geometries. The pronounced enhancement was attributed to concentrated local field of SPP enabled excitation rate increment and quantum yield amplification by the SPM nanostructure, showcasing a powerful way to boost two-dimensional exciton emission by plasmonic effects.
Article
Optics
Zhenxing Li, Jinlei Hu, Zexiang Wang, Yuxuan Chen, Menghan Li, Jiacheng Zhou, Jingjing Wu, Jicheng Wang
Summary: This study proposes a tunable dual-band mid-infrared graphene-based one-dimensional photonic crystal absorber with strong surface phonon polaritons and Tamm phonon polariton coupling. The resonance wavelengths and absorption intensities of the coupled mode can be adjusted by the Fermi level and structure parameters. The designed structure has potential applications in refractive index sensors and biomolecular layer sensors, as well as absorbers, photodetectors, and energy harvesting devices.
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
(2022)
Article
Physics, Applied
L. Nordin, P. Petluru, A. J. Muhowski, E. A. Shaner, D. Wasserman
Summary: This study demonstrates all-epitaxial structures capable of supporting short- and long-range surface plasmon polariton modes in the long-wave infrared region. The epitaxial structures show potential to serve as long-range interconnects or waveguides in plasmonic/optoelectronic systems. Mapping of the SPP dispersion using spectroscopy highlights the applications in the long-wave infrared.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Optics
Xun Wang, Tian Sang, Guoqing Li, Qing Mi, Yao Pei, Yueke Wang
Summary: A novel ultrabroadband and ultrathin absorber based on the encapsulated T-shaped metasurface (ETM) has been designed, fabricated, and characterized. The ETM exhibits robust absorption performance with improved impedance matching and can achieve ultrabroadband absorption through the excitation of localized surface plasmon. Additionally, the ETM shows polarization-insensitive and wide-angle features, making it suitable for various potential applications.
Article
Nanoscience & Nanotechnology
Dongda Wu, Yi Wang, Yujun Liu, Junqiao La, Shijia He, Fanzhou Lv, Wenxin Wang
Summary: The interplay between light and matter at the nanoscale can be enhanced by Bloch surface plasmon polariton (Bloch-SPP) on the plasmonic lattice. An Ag nanohole array arranged in a hexagonal formation acted as an optical cavity to achieve directional and polarized amplified spontaneous emission (ASE) of R6G molecules. A 100-fold enhancement of ASE was observed at a 15-degree emission angle under TM polarization when the pump power density exceeded a threshold of 198 W/cm2 based on degenerated high state density modes. Additionally, the Bloch-SPP modes modulated a specific polarization dependence of ASE, with the degree of polarization increasing from 1.3 to 2.1 when the pump power density exceeded the ASE threshold. This work elucidates the interaction between gain media and plasmonic systems, providing a foundation for the design of plasmonic devices.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Analytical
Francesco Arcadio, Mimimorena Seggio, Luigi Zeni, Alessandra Maria Bossi, Nunzio Cennamo
Summary: A surface plasmon resonance (SPR) biosensor based on a spoon-shaped waveguide combined with an estrogen receptor (ER alpha) was developed for the detection and quantification of estradiol in real water samples. The biosensor demonstrated successful binding of estradiol to the functionalized surface with a limit of detection of 0.1 pM. The biosensor's performance was evaluated in both seawater and freshwater, showing potential for the screening of estradiol in aquaculture.
Article
Chemistry, Multidisciplinary
Krishna Chand Maurya, Abhijit Chatterjee, Sonnada Math Shivaprasad, Bivas Saha
Summary: The morphology-controlled Reststrahlen band and plasmon polaritons make GaN nanostructures attractive for infrared nanophotonics.
Article
Optics
Yan Xu, Jianbo Yue, Manzhuo Wang, Xiaoqiang Sun, Daming Zhang
Summary: This article theoretically demonstrates a narrow-band Bragg grating filter based on a long-range surface plasmon polariton waveguide, which can achieve a change in the central wavelength through temperature adjustment.
Article
Engineering, Electrical & Electronic
M. J. Maleki, M. Soroosh
Summary: This work presents a novel plasmonic structure for guiding surface plasmon polaritons, which can serve as a fundamental waveguide in various plasmonic devices. The designed waveguide exhibits low loss, long coupling length, and compact size, making it suitable for integration in photonic circuits and different devices.
OPTICAL AND QUANTUM ELECTRONICS
(2023)
Article
Nanoscience & Nanotechnology
Hoon Yeub Jeong, Yeonsoo Lim, Jungho Han, Soo-Chan An, Young Chul Jun
Summary: This study proposes and demonstrates electrically addressable exceptional points in a plasmonic structure. By continuously tuning the varactor capacitance, the coalescence of the real and imaginary parts of the eigenfrequency is achieved, enabling the direct addressing of exceptional points.
Article
Nanoscience & Nanotechnology
Saif H. Abdulnabi, Mohammed N. Abbas
Summary: This paper presents an all-optical 2 x 1 multiplexer based on a plasmonic multilayer structure, which operates through the principle of interference. The proposed device exhibits excellent performance and has potential applications in all-optical arithmetic logic units, photonics integrated circuits, and THz applications.
JOURNAL OF NANOPHOTONICS
(2022)
Article
Chemistry, Multidisciplinary
Konthoujam James Singh, Hao-Hsuan Ciou, Ya-Hui Chang, Yen-Shou Lin, Hsiang-Ting Lin, Po-Cheng Tsai, Shih-Yen Lin, Min-Hsiung Shih, Hao-Chung Kuo
Summary: This paper investigates the coupling of excitons in tungsten diselenide monolayer with a one-dimensional photonic crystal at room temperature, and demonstrates the manipulation of circular dichroism and circularly polarized light emissions through the integration of TMDs and photonic crystal. The study holds potential for applications in optical information technology, biosensing, and optoelectronic devices.
Article
Crystallography
Catherine Langpoklakpam, An-Chen Liu, Kuo-Hsiung Chu, Lung-Hsing Hsu, Wen-Chung Lee, Shih-Chen Chen, Chia-Wei Sun, Min-Hsiung Shih, Kung-Yen Lee, Hao-Chung Kuo
Summary: This paper reviews the superior properties of SiC power devices and their applications in various power applications. SiC MOSFETs have been extensively commercialized due to their low on-resistance, reduced switching losses, and high switching speeds.
Article
Multidisciplinary Sciences
Yuan-Fong Chou Chau, Hao-En Chang, Po-Sheng Huang, Pin Chieh Wu, Chee Ming Lim, Li-Ming Chiang, Tzyy-Jiann Wang, Chung-Ting Chou Chao, Tsung Sheng Kao, Min-Hsiung Shih, Hai-Pang Chiang
Summary: This study demonstrates a tunable ferroelectric lithography plasmon-enhanced substrate to generate photo-reduced silver nanoparticles (AgNPs) and achieve enhanced photoluminescence (PL) with shortened lifetime. This effect can be attributed to the localized electromagnetic wave produced by the nanotextured AgNPs layers' surface and gap plasmon resonances.
SCIENTIFIC REPORTS
(2022)
Article
Materials Science, Multidisciplinary
Hsiang-Ting Lin, Chiao-Yun Chang, Cheng-Li Yu, Andrew Boyi Lee, Shih-Yu Gu, Li-Syuan Lu, Yu-Wei Zhang, Shih-Yen Lin, Wen-Hao Chang, Shu-Wei Chang, Min-Hsiung Shih
Summary: This study investigates dual-color continuous-wave microcavity lasers by integrating WSe2 monolayer and CdSe quantum dots into a single microdisk cavity. The results show that adding CdSe quantum dots can reduce the laser threshold of WSe2 monolayer and expand the wavelength range of TMDC-based compact lasers.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Physics, Applied
Rizwana Khanum, Ching-Hang Chien, Yia-Chung Chang, Rakesh S. S. Moirangthem
Summary: This work investigates the emission of 2 mol. % Li+-doped ZnO microspheres with different sizes under laser excitations. It was found that stimulated emissions were observed in all microspheres under a visible laser excitation source. The threshold pumping power was found to depend on the size of the microresonators. Surprisingly, the WGM peaks of higher intensity were observed in the visible rather than UV spectral region when two microspheres were excited via a 325 nm UV laser. The WGMs in each microsphere exhibit a linear spectral shift with increasing pumping power of the 488 nm excitation laser source.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Ya-Hui Chang, Yen-Shou Lin, Konthoujam James Singh, Hsiang-Ting Lin, Chiao-Yun Chang, Zheng-Zhe Chen, Yu-Wei Zhang, Shih-Yen Lin, Hao-Chung Kuo, Min-Hsiung Shih
Summary: A multicolor AC-driven light-emitting device was developed by integrating a WSe2 monolayer and AlGaInP-GaInP multiple quantum well (MQW) structures. The CVD-grown WSe2 monolayer was placed on top of an AlGaInP-based LED wafer to create a two-dimensional/three-dimensional heterostructure. These hybrid devices expand the wavelength range of 2-D TMDC-based light emitters and support their implementation in various applications.
Article
Chemistry, Multidisciplinary
Sheng-Chan Wu, Chun-Sheng Wu, Ching-Hang Chien, Yu-Wei Zhang, Chung-Xian Yang, Cheng Liu, Ming-Hsien Li, Chen-Fu Lin, Yu-Hao Wu, Bi-Hsuan Lin, Yu-Hsun Chou, Yia-Chung Chang, Peter Chen, Hsu-Cheng Hsu
Summary: A convenient methodology based on temperature-dependent spectroscopy is proposed to investigate the effect of polariton resonant modes on refractive index dispersion. Stable exciton-polaritons and exciton-polarons are confirmed by energy dispersions and the observation of self-trapped exciton-polaron state. The large negative thermal-optic coefficient due to damping effect of exciton-phonon scattering is observed, indicating the potential use of quasi-2D perovskite as a phase compensator for conventional semiconductor materials.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Physics, Condensed Matter
I. Lin Ho, Yia Chung Chang
Summary: The electronic conductance of GaAs nanowires with zincblende-wurtzite heterostructures was investigated using a tight-binding model and non-equilibrium Green's function formulae. The results showed that introducing more wurtzite-type segments into the GaAs nanowires can create isolated conductance channels near the bandgap edge, offering potential applications in mid-infrared optics.
PHYSICA B-CONDENSED MATTER
(2023)
Article
Chemistry, Multidisciplinary
Raj Kumar Paudel, Chung-Yuan Ren, Yia-Chung Chang
Summary: We implemented a semi-empirical pseudopotential (SEP) method to calculate the band structures of graphene and graphene nanoribbons. The SEP includes both local and non-local terms, fitted to first-principles calculations based on DFT. With only a handful of parameters, our method accurately reproduces the band structures obtained by DFT for graphene. We also applied the SEP method to calculate the band structures of graphene nanoribbons, obtaining results close to DFT by adding a correction term to the local pseudopotentials on the nanoribbon edges.
Article
Chemistry, Multidisciplinary
Chung-Yuan Ren, Raj Kumar Paudel, Yia-Chung Chang
Summary: We have developed an efficient computation method based on density functional theory (DFT) for C-60 buckyball, using fully symmetrized basis functions with 120 symmetry operations. Our approach is much faster than the conventional method based on three-dimensional plane waves. It is also significantly faster than existing DFT packages for calculating optical transitions and modeling properties of buckyball crystals.
Article
Materials Science, Multidisciplinary
James Singh Konthoujam, Yen-Shou Lin, Yi-Hua Pai, Chiao-Yun Chang, Yu-Wei Zhang, Shih-Yen Lin, Hao-Chung Kuo, Min-Hsiung Shih
Summary: This study reports a significant enhancement in the modulation bandwidth of visible light communication (VLC) by integrating a two-dimensional semiconductor and quantum dots emitter. By integrating a WSe2 monolayer into an Au-nanorod-decorated CdSe/ZnS quantum dots emitter, high modulation performance is achieved. The hybrid quantum dot-gold-tungsten disulfide (QD-Au-WSe2) emitter exhibits a higher modulation bandwidth (130 MHz) compared to pristine quantum dots and a QD-WSe2 heterostructure without Au nanorods (79 and 91 MHz, respectively). The increased transition rate of quantum dot excitons is attributed to the integration of Au nanorods and WSe2 monolayer, which is supported by a reduction in average carrier lifetime observed from time-resolved photoluminescence analysis. This approach and findings provide an opportunity for the application of two-dimensional semiconductors in next-generation miniature VLC devices for high-speed optical communications.
ADVANCED PHOTONICS RESEARCH
(2023)
Article
Optics
Guan-Hong Li, Chieh Huang, Feng-Jung Kao, Min-Hsiung Shih, Hao-Chung Kuo, Yi-Jen Chiu, Chao-Kuei Lee
Summary: In this study, supercontinuum generation from 645.3 nm to 851 nm was demonstrated by using a high-order mode and engineering the dispersion within the high nonlinear refractive index material Ta2O5 waveguide. The results show clear potential for applications.
OPTICS AND LASER TECHNOLOGY
(2024)
Article
Nanoscience & Nanotechnology
James Singh Konthoujam, Yen-Shou Lin, Ya-Hui Chang, Hsiang-Ting Lin, Chiao-Yun Chang, Yu-Wei Zhang, Shih-Yen Lin, Hao-Chung Kuo, Min-Hsiung Shih
Summary: We developed a dual-color AC-driven light-emitting device by integrating WSe2 monolayer and AlGaInP-GaInP multiple quantum well structures with an AlOx insulating layer as a capacitor structure. We investigated the device characteristics using an equivalent RC circuit model and analyzed the time-resolved electroluminescence to understand the underlying physical mechanisms. This dual-color hybrid device expands the applications of 2-D TMDC-based light emitters.
Article
Chemistry, Multidisciplinary
Hsiang-Ting Lin, Yao-Yu Hsu, Pi-Ju Cheng, Wei-Ting Wang, Shu-Wei Chang, Min-Hsiung Shih
Summary: In this study, in situ optical chirality tunable nanorod trimer metasurfaces were demonstrated, which could control the degree of circular polarization of transmitted wave by adjusting the gap distances between nanorods and the manipulation of localized surface plasmon resonance (LSPR) coupling. These fabricated chiral metasurfaces can be used as important elements for chip-scale flexible optoelectronic integrated circuits in sensing, display, and communication applications.
NANOSCALE ADVANCES
(2022)
