Article
Chemistry, Multidisciplinary
Zhuangqiang Gao, Shikuan Shao, Weiwei Gao, Dianyong Tang, Dianping Tang, Shengli Zou, Moon J. Kim, Xiaohu Xia
Summary: The study introduces an effective method for designing morphology-stable nanoparticles with tunable plasmonic properties by controlling internal structure; Plasmonic properties of the nanoparticles can be conveniently adjusted by varying the material deposited on the inner surfaces without changing the overall morphology; The nanoparticles show potential applications in colorimetric sensing with low detection limits.
Article
Nanoscience & Nanotechnology
Baiwei Wang, Poomirat Nawarat, Kim Michelle Lewis, Panos Patsalas, Daniel Gall
Summary: The optical transmission and reflection spectra of Ti1-xMgxN(001) layers were studied, showing a linear reduction in free carrier density with increasing Mg content x. Nitrogen vacancies in Mg-rich samples act as donors, resulting in a minimum free carrier density of 1.6 x 10(22) cm(-3) for x = 0.49. The materials have potential as refractory infrared plasmonic materials.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Review
Chemistry, Multidisciplinary
Kang Yang, Xu Yao, Bowen Liu, Bin Ren
Summary: The development of nanofabrication has enabled the manipulation of light at a scale smaller than the wavelength through metallic plasmonic array structures. These structures offer controllable light-matter interactions and tunable optical performance. Techniques for fabrication and applications of plasmonic arrays have been reviewed, with existing challenges and future perspectives discussed for guiding further development in this field.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Mariia Ivanchenko, Hao Jing
Summary: The study focused on the influence of plasmonic coupling effects between different components in Au NRs@Cu2-xSe nanostructures on their characteristics. Anisotropic Au@Cu2-xSe hetero-nanostructures with well-controlled design and optical properties were obtained, resulting in the superimposition of LSPR bands of gold and copper selenide in the NIR region, leading to superior photocatalytic properties of the nanostructures.
NANOSCALE ADVANCES
(2022)
Article
Optics
J. I. D. U. O. Dong, L. I. N. L. O. N. G. Tang, B. I. N. B. I. N. Wei, X. I. A. N. G. X. I. N. G. Bai, Q. I. N. G. Zang, H. A. O. Zhang, C. H. U. N. H. E. N. G. Liu, H. A. O. F. E. Shi, Y. A. N. G. Liu, Y. U. E. G. U. A. N. G. Lu
Summary: This article proposes a new type of miniaturized infrared spectrometer based on tunable graphene plasmonic filters and infrared detectors. The transmittance spectrum of the graphene filter can be adjusted by changing its Fermi energy, allowing for dynamic modulation of incident light and encoding of spectral information. Factors such as graphene carrier mobility and signal-to-noise ratio are found to be key parameters influencing spectrometer performance. A hybrid decoding algorithm combining ridge regression and a neural network is proposed, achieving sub-hundred nanometer spectral resolution. The proposed microchip-sized spectrometer has the potential for integration in portable infrared spectral imaging devices.
Article
Optics
Jiduo Dong, Linlong Tang, Binbin Wei, Xiangxing Bai, Qing Zang, Hao Zhang, Chunheng Liu, Haofei Shi, Yang Liu, Yueguang Lu
Summary: A miniaturized infrared spectrometer based on tunable graphene plasmonic filters and infrared detectors is proposed. The transmittance spectrum of the filter can be adjusted by changing the Fermi energy of the graphene, allowing dynamic modulation of incident light and encoding its spectral information in the infrared detector. Decoding algorithms such as ridge regression and neural networks can reconstruct the incident spectrum. The spectrometer has the potential to be integrated into portable devices for infrared spectral imaging applications.
Article
Biochemistry & Molecular Biology
Vasanthan Devaraj, Jong-Min Lee, Ye-Ji Kim, Hyuk Jeong, Jin-Woo Oh
Summary: This study demonstrates the significance of the shape and surface morphology of plasmonic nanoparticles in achieving efficient self-assembled plasmonic nanoparticle clusters. Spherical nanoparticles show better near-field strength and broad-spectral optical performance compared to cubical nanoparticles, attributed to their dipole mode characteristics.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Chemistry, Multidisciplinary
Tung Huu Dang, Angela Vasanelli, Yanko Todorov, Carlo Sirtori, Yoann Prado, Audrey Chu, Charlie Greboval, Adrien Khalili, Herve Cruguel, Christophe Delerue, Gregory Vincent, Emmanuel Lhuillier
Summary: The study demonstrates that bias tunable aspectral response can be achieved by coupling a HgTe NC array with a plasmonic resonator. The observed blueshift arises from the interplay between hopping transport and inhomogeneous absorption due to the presence of the photonic structure. This research expands the realm of existing NC-based devices and lays the foundation for light modulators.
Article
Nanoscience & Nanotechnology
Yanglin Zhao, Nan Chen, Baozhong Deng, Lifang Wu, Shenghao Wang, Bruno Grandidier, Julien Proust, Jerome Plain, Tao Xu
Summary: High-performance near-infrared (NIR) narrowband organic photodetectors (OPDs) can be achieved by employing a suitable optical design and light manipulation strategy. This has significant implications for applications such as wireless optical communication and light detection.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Optics
Juan Wang, Thomas Weber, Andreas Aigner, Stefan A. Maier, Andreas Tittl
Summary: This article introduces a new method that combines mirror-coupled resonances with the loss engineering capabilities of plasmonic quasi-bound states in the continuum to tailor the light-matter interaction in different coupling regimes. The study demonstrates the application of a pixelated plasmonic perfect absorber metasurface for multispectral surface-enhanced molecular spectroscopy over a broad range of mid-infrared wavenumbers using a single gap size.
LASER & PHOTONICS REVIEWS
(2023)
Article
Chemistry, Multidisciplinary
Anton Yu. Bykov, Yuanyang Xie, Alexey V. Krasavin, Anatoly V. Zayats
Summary: In this study, the optically driven acoustic modes and nonlinear response of multilayered spherical plasmonic hetero-nanoparticles were investigated. These nanoparticles, composed of alternating layers of gold and silica, exhibited a broadband nonlinear optical response from visible to near-infrared wavelengths. Additionally, they served as a tunable optomechanical system with mechanically decoupled layers, allowing for selective switching of different acoustic modes by tuning the excitation wavelength. These findings not only enhance our understanding of the internal structure of composite plasmonic nanoparticles but also provide an additional degree of freedom for controlling their nonlinear optical and mechanical properties.
Article
Chemistry, Multidisciplinary
Yisheng He, Haoyu Li, Anja Maria Steiner, Andreas Fery, Yuan Zhang, Chunhong Ye
Summary: This study presents a synthetic approach to fabricate 3D plasmonic chiral structures by rolling gold nanospheres-decorated polymer micro-sheets into micro-tubules. The resulting structures exhibit distinctive circularly polarized light-dependent optical responses over a broad range of frequencies, offering great potential for photonic and biomedical applications.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Meng Zhao, Jing Li, Matej Sebek, Le Yang, Yan Jun Liu, Michel Bosman, Qian Wang, Xinting Zheng, Jiong Lu, Jinghua Teng
Summary: The study successfully achieved electrostatically modulated NIR plasmonic resonances over a range of approximately 360 cm(-1) in few-layer NbSe2 gratings, thanks to the enhanced electrostatics of atomically thin 2D materials and high-quality film produced by a solution method. NbSe2 plasmons, with their atomic thickness, provide strong field confinement and an additional degree of resonance frequency modulation.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Jie Ma, Xindan Zhang, Shiwu Gao
Summary: Metallic nanostructures can absorb light through plasmon excitations, generating hot electron-hole pairs. When interfaced with a semiconductor, the spatial separation of hot carriers plays a crucial role in photovoltaic and photocatalytic applications. Free-electron metals like Al have high plasmon frequencies that can be tuned for charge transfer pathways in plasmon-assisted photovoltaics and photocatalysis.
Article
Materials Science, Multidisciplinary
Hongbin Ma, Junru Niu, Bingtao Gao, Yiyun Zhang, Yiming Feng, Fei Gao, Hongsheng Chen, Haoliang Qian
Summary: Effective free-space optical metasurface is crucial for telecommunication and information processing, but the lack of efficient optical nonlinearity remains a challenge for its full potential and practical applications. Metallic quantum wells (MQWs) with high nonlinear susceptibility offer a new solution. In this study, MQWs are incorporated into a resonance configuration of quasi bound state in the continuum (BIC) to propose an efficient tunable plasmonic metasurface. The metasurface, composed of MQWs-based nanostructure, supports tunable plasmonic quasi-BIC, achieving an extinction ratio of around 9 dB and an extremely high modulation speed up to the terahertz level. The narrow linewidth quasi-BIC is obtained by breaking the symmetry of nanoelliptical elements, further enhancing the modulation depth. This work meets the requirements of high-speed and high-efficiency free-space all-optical metasurfaces, including spatial light modulators in optical computing field.
ADVANCED OPTICAL MATERIALS
(2023)
