Article
Engineering, Electrical & Electronic
Yuto Sagae, Takashi Matsui, Taiji Sakamoto, Takayoshi Mori, Kazuhide Nakajima
Summary: We propose a multi-core fiber (MCF) with a low-latency core for master-slave carrier phase estimation (MS-CPE). We evaluate the temperature coefficient of skew and the signal-to-noise ratio (SNR) penalty resulting from the temperature dependence of the skew. The study shows that maintaining an SNR penalty of less than 1 dB requires stringent temperature requirements.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2022)
Article
Engineering, Electrical & Electronic
Weidong Zhang, Hung Chiang, Te Wen, Lulu Ye, Hai Lin, Haitan Xu, Qihuang Gong, Guowei Lu
Summary: Coupled plasmonic systems are of interest for their optical properties and potential applications. An improved method for mapping geometric configurations to optical properties accurately is developed, allowing for the realization of low-loss cavity and interesting effects in metallic nanoparticles. Asymmetric coupling is predicted to lead to chirality and directional energy transfer in hybrid plasmonic systems.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Chaolumen Wu, Qingsong Fan, Wanling Wu, Tian Liang, Yun Liu, Huakang Yu, Yadong Yin
Summary: Integrating plasmonic resonance into photonic bandgap nanostructures allows for additional control over their optical properties. One-dimensional plasmonic photonic crystals with angular dependent structural colors are fabricated by assembling magnetoplasmonic colloidal nanoparticles under a magnetic field. The assembled structures exhibit angular dependent colors based on the activation of optical diffraction and plasmonic scattering.
Article
Physics, Multidisciplinary
Kobi Frischwasser, Kobi Cohen, Shai Tsesses, Shimon Dolev, Gilad Rosenblatt, Guy Bartal
Summary: This study reveals the nonlinear forced response of modal-nonmodal pairs of short-range surface plasmons in thin metal films using a nonradiating nonlinear source. Nonlinearly mediated direct access to nonmodal plasmons in a lossless regime is achieved. The findings can be applied to other forms of surface waves or optical nonlinearities for on-chip nonlinearly controlled nanophotonic devices.
PHYSICAL REVIEW LETTERS
(2022)
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
Engineering, Multidisciplinary
Shaoqing Cui, Jinlong Fu, Song Cen, Hywel R. Thomas, Chenfeng Li
Summary: This study proposes a novel and generic correlation analysis strategy and establishes quantified relations between various statistical descriptors for heterogeneous materials. Through operational steps including data regularization, dimension reduction, and correlation analysis, the quantified relationships among descriptors are summarized, providing useful guiding information for the study of heterogeneous materials.
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
(2021)
Article
Nanoscience & Nanotechnology
Alvaro Rodriguez Echarri, Joel D. Cox, Fadil Iyikanat, F. Javier Garcia de Abajo
Summary: Nanoscale nonlinear optics can be enhanced by utilizing plasmonic excitations in nanostructures, but faces challenges such as inelastic losses due to fabrication imperfections.
Article
Engineering, Electrical & Electronic
Z. Jalilian, R. Moradian
Summary: This study investigates the effect of copper and titanium dioxide nanoparticles as a substrate on the optical response of double negative-index plasmonic metamaterials layers. The thin-film characterizations were analyzed using various techniques, and the optical properties of the films were described using the film matrix method, confirming the optical gain property of the fabricated layers.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Chemistry, Multidisciplinary
Guangqing Du, Yu Lu, Dayantha Lankanath, Xun Hou, Feng Chen
Summary: Plasmonic optical tweezers with a symmetry-tunable potential well were investigated based on a heterogeneous model of nano-bowtie antennas made of different noble substances. The study suggests that the plasmonic trapping force around a quantum dot exhibits symmetry-broken characteristics and becomes increasingly asymmetrical with increasing applied laser electric field. The wavelength-dependent plasmonic trapping potential exhibits a two-peak structure for the heterogeneous Au-Ag bowtie dimer compared to a single-peak trapping potential of the Au-Au bowtie dimer.
Article
Nanoscience & Nanotechnology
Xu Ouyang, Chenhui Li, Yaoyu Cao, Yi Xu, Xiangping Li
Summary: The enhanced artificial chiroptical response of metamaterials compared to natural counterparts is achieved through the use of plasmonic nanoaggregates with a disordered coupling effect. This spontaneous chiroptical response is sensitive to the handedness of light and leads to circular dichroism in linear absorption and two-photon fluorescence. The localized spontaneous chirality is experimentally demonstrated by nanoscale multiplexing watermarks in polychromatic beams.
Article
Materials Science, Multidisciplinary
Sakineh Almasi Monfared, Mahmood Seifouri, Seyedeh Mehri Hamidi, Seyed Majid Mohseni
Summary: In this study, an electro-optical switch using one-dimensional plasmonic photonic crystals and bilayer graphene was experimentally demonstrated. The optical modes in the crystal band gap could be tuned by the unique optical properties of plasmonic surface resonance at the grating and graphene layers. Excitation of periodic metallic arrays led to exciting plasmonic surface lattice resonance and the creation of two reflectance modes for magnetic polarization at a 54-degree incidence angle.
Article
Materials Science, Multidisciplinary
Hyeohn Kim, Eunji Im, Ryeong Myeong Kim, Nam Heon Cho, Jeong Hyun Han, Hyo-Yong Ahn, Ji-Hyeok Huh, SeokJae Yoo, Seungwoo Lee, Ki Tae Nam
Summary: Large-area metal-insulator-metal (MIM) resonators are demonstrated using non-lithographically assembled chiral gold nanoparticles (helicoids) and subsequent gold layer deposition, proving their boosted chiroptical responses at the visible regime. The strength of capacitive coupling can be precisely tuned by the thickness of the topcoat Au and the dielectric gap. Numerical analysis supports that the optimally tuned capacitive coupling in the chiral MIM structure enhances both electric and magnetic dipolar resonances and brings their spectral positions closer.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Physics, Applied
Yanhua Xu, Lupeng Zhao, Guodong Chen, Zeliang Bai, Lili Miao
Summary: A coupled structure of center-symmetric orthogonal nano-antenna arrays on FTO is designed for enhanced nonlinear response. The roles of structural and material parameters in determining the linear and nonlinear optical response of the antenna-FTO metasurface are studied. The structure exhibits a broadband spectrum (~900 nm) and a large nonlinearity with a nonlinear refractive index of 1.02 cm(2)/GW, which is about 400 times higher than that of bare FTO film. The results offer a promising platform for ultracompact and large nonlinear optical devices.
APPLIED PHYSICS EXPRESS
(2023)
Article
Astronomy & Astrophysics
Dongwoo T. Chung, Ishika Bangari, Patrick C. Breysse, Havard T. Ihle, J. Richard Bond, Delaney A. Dunne, Hamsa Padmanabhan, Liju Philip, Thomas J. Rennie, Marco P. Viero
Summary: We propose the deconvolved distribution estimator (DDE) as an extension of the voxel intensity distribution (VID) in future observations for the CO Mapping Array Project (COMAP). The DDE utilizes the convolution property of the observed VID, which is a combination of correlated signal intensity distributions and uncorrelated noise or interloper intensity distributions. By deconvolving the individual VID from their joint VID in Fourier-space, the DDE reduces sensitivity to interloper emission while maintaining sensitivity to correlated components. The DDE improves upon the VID by minimizing the influence of uncorrelated noise and interloper biases, making it valuable for COMAP observations.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Optics
Aaron J. Muhowski, Evan Simmons, Kun Li, Evgenii E. Narimanov, Viktor A. Podolskiy, Daniel Wasserman
Summary: This work explores the possibility of extending the plasmonic response of doped semiconductors to the short-wavelength side of the mid-infrared by leveraging charge confinement. The existence of negative permittivity across the technologically vital midwave infrared range is demonstrated both theoretically and experimentally. The semiconductor composites presented in this study provide an ideal material platform for monolithic integration with a variety of semiconductor optoelectronic devices operating in the mid-wave infrared.
Review
Chemistry, Physical
Dinumol Devasia, Ankita Das, Varun Mohan, Prashant K. Jain
Summary: This review discusses the impact of light excitation on the chemical reactivity and selectivity of plasmonic metal nanostructures, introducing the principles of modifying the energy landscape of surface reactive species and unlocking new reaction pathways through excited charge carriers.
ANNUAL REVIEW OF PHYSICAL CHEMISTRY, VOL 72
(2021)
Article
Chemistry, Multidisciplinary
Jaeyoung Heo, Ki-Hyun Cho, Prashant K. Jain
Summary: This study used in situ transmission electron microscopy to investigate antiphase boundaries in the superionic conductor copper selenide, revealing that these defects act as barriers to the propagation of the superionic phase and undergo spatial diffusion and shape changes due to thermally activated fluctuations of the neighboring ionic structure.
Article
Chemistry, Physical
Dinumol Devasia, Prashant K. Jain
Summary: Nanoparticle-based catalysts are complex and heterogeneous, with variable catalytic activities and selectivities among different nanoparticles. In addition to structural and morphological differences, fluctuations in catalytic activity over time are observed in single nanoparticles.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Review
Materials Science, Multidisciplinary
Sundaram Bhardwaj Ramakrishnan, Farshid Mohammadparast, Andishaeh P. Dadgar, Tong Mou, Tien Le, Bin Wang, Prashant K. Jain, Marimuthu Andiappan
Summary: Hybrid plasmonic nanostructures utilize thermal energy and photon stimuli for high catalytic activity and stability. The photocatalytic approach is attractive for solar energy conversion and distributed synthesis of valuable chemicals.
ADVANCED OPTICAL MATERIALS
(2021)
Article
Chemistry, Physical
Ki-Hyun Cho, Francis M. Alcorn, Jaeyoung Heo, Prashant K. Jain
Summary: Alloying on the nanoscale is a powerful method for adjusting the properties of materials. In this study, the impact of alloying on the structural and optoelectronic properties of copper chalcogenide nanocrystals was explored. The results showed anomalous behavior in the properties of the alloy nanocrystals, which can be attributed to the mixed-phase nature and structural disorder caused by the difference in anionic sublattice structures.
CHEMISTRY OF MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Ki-Hyun Cho, Prashant K. Jain
Summary: Nanostructuring is a powerful tool for tuning electronic properties and enhancing transport. By utilizing one-dimensional nanostructures, we have demonstrated superionic conduction with record-high ionic conductivity in solid electrolytes fabricated from nanowires of copper selenide.
Article
Chemistry, Multidisciplinary
Enrique Contreras, Rachel Nixon, Chloe Litts, Wenxin Zhang, Francis M. Alcorn, Prashant K. Jain
Summary: Ammonium synthesis from nitrate has been demonstrated using a combination of electricity and light. Gold nanoparticle electrocatalyst with dual attributes of nitrate reduction activity and visible-light-harvesting ability was used to achieve a 15x boost in activity compared to conventional electrocatalysis. Non-thermal effects induced by plasmonic excitation, such as energetic carriers and charged interfaces, were found to play a crucial role in the observed enhancement.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Rendian Wan, Shilong Liu, Yu Wang, Ye Yang, Yong Tian, Prashant K. Jain, Xiongwu Kang
Summary: By tuning the electronic structure, we designed Cu-Pt-Ni ternary alloy nanoparticles for alkaline hydrogen evolution reaction (HER), which exhibit enhanced activity under localized surface plasmon resonance (LSPR) excitation.
Letter
Nanoscience & Nanotechnology
Prashant K. K. Jain
NATURE NANOTECHNOLOGY
(2023)
Review
Chemistry, Multidisciplinary
Francis M. M. Alcorn, Prashant K. K. Jain, Renske M. M. van der Veen
Summary: The ability of transmission electron microscopy (TEM) to image structures ranging from millimetres to angstroms has made it an indispensable tool for modern chemists. Recent developments in TEM have allowed for real-time probing of structural evolution on the nanoscale. Time-resolved in situ TEM techniques are discussed in this review, along with their applications for studying chemical and physical processes.
NATURE REVIEWS CHEMISTRY
(2023)
Review
Chemistry, Multidisciplinary
Rachel Nixon, Enrique Contreras, Prashant K. Jain
Summary: Plasmon-assisted electrochemistry provides a new approach to use light energy for chemical and fuel manufacturing. Plasmonic excitation enhances and modulates electrochemical processes, and nonthermal carriers generated by plasmonic excitation promote improved reaction kinetics and new modes of electrocatalytic activity. These effects can be utilized to make electroconversions more efficient, selective, and reduce the reliance on precious metals. However, there are still fundamental and practical issues that need to be addressed.
TRENDS IN CHEMISTRY
(2023)
Editorial Material
Chemistry, Physical
Prashant K. K. Jain, Zee Hwan Kim, Wei David Wei
JOURNAL OF CHEMICAL PHYSICS
(2023)
Article
Chemistry, Physical
Francis M. Alcorn, Maya Chattoraj, Renske M. van der Veen, Prashant K. Jain
Summary: Using a transmission electron microscope with laser excitation, we observed Ostwald ripening of Au-Cu alloy nanoparticles under plasmonic excitation. This structural transformation, distinct from electron-beam-induced coalescence, is not thermally induced but instead triggered by plasmonically excited carriers.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Francis M. Alcorn, Renske M. van der Veen, Prashant K. Jain
Summary: Researchers used a high-resolution transmission electron microscope to observe the structural evolution of Cu-based nanoparticles under electron beam irradiation and plasmonic excitation. They found that these particles undergo hollowing via the nanoscale Kirkendall effect. Hollowing is triggered by electron beam irradiation, and plasmonic excitation enhances the kinetics of the transformation, likely through the effect of photothermal heating.
Article
Chemistry, Multidisciplinary
Varun Mohan, Biswanath Dutta, Roma Ripani, Prashant K. Jain
Summary: The research introduces a simple process for chlorination of methane at near-ambient temperatures using minimal reagents and without the need for catalysts or external energy sources. The reaction is carried out in an aqueous medium with trichloroisocyanuric acid releasing hypochlorous acid to trigger the chlorination process. The method is shown to be applicable to other alkanes but further developments are needed for practical chloromethane production.
CELL REPORTS PHYSICAL SCIENCE
(2021)