Article
Optics
Daigao Chen, Hongguang Zhang, Min Liu, Xiao Hu, Yuguang Zhang, Dingyi Wu, Peiqi Zhou, Siyao Chang, Lei Wang, Xi Xiao
Summary: A light-trapping-structure vertical Ge photodetector with high bandwidth and responsivity is demonstrated, achieving clear signal transmission performance.
PHOTONICS RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Matthew Eliceiri, Costas P. Grigoropoulos
Summary: In this study, we have improved the maximum two-dimensional translation rate of optically tweezed silicon nanowires using a silicon film substrate and a specific laser wavelength. We have also reduced the power usage significantly. The mechanism for the enhanced tweezing effect was explained using finite difference time domain simulation, and the robust and deterministic placement of the nanowires on the film surface was demonstrated experimentally.
Article
Optics
Tigers Jonuzi, Alessandro Lupo, Miguel C. Soriano, Serge Massar, J. D. Domenech
Summary: Artificial neural networks (ANN) are a groundbreaking technology used in various fields. Photonic implementation of ANN algorithms using frequency multiplexing has advantages of low power consumption and high bandwidth. An integrated programmable spectral filter is designed to manipulate the optical frequency comb in our neuromorphic computing platform.
Review
Energy & Fuels
Rebecca Saive
Summary: This paper discusses the significance of thin, flexible, and efficient silicon solar cells, as well as the challenges in photon management. It also explores known technological and theoretical limitations, as well as methods to improve light trapping.
PROGRESS IN PHOTOVOLTAICS
(2021)
Article
Chemistry, Multidisciplinary
Bradley J. Ryan, Luke T. Roling, Matthew G. Panthani
Summary: Characterization of anisotropic disorder within SiNSs using synchrotron X-ray diffraction and PDF analysis reveals unique structural properties of SiNSs at high temperatures, with significant changes observed after heat treatment.
Article
Multidisciplinary Sciences
Salih Yanikgonul, Victor Leong, Jun Rong Ong, Ting Hu, Shawn Yohanes Siew, Ching Eng Png, Leonid Krivitsky
Summary: Integrated photodetectors are crucial components for scalable photonics platforms, with most efforts focused on devices operating at infrared telecommunication wavelengths. The authors present the first monolithically integrated avalanche photodetector for visible light, demonstrating high gain-bandwidth product and low dark current, as well as open eye diagrams at speeds up to 56 Gbps.
NATURE COMMUNICATIONS
(2021)
Article
Optics
Benedikt Blaesi, Mario Hanser, Klaus Jaeger, Oliver Hoehn
Summary: Solar cells can enhance light trapping efficiency by utilizing gratings. We present an analytical model to optimize the grating period and provide guidelines for maximizing light trapping in high-end solar cells.
Article
Engineering, Electrical & Electronic
Dajian Liu, Long Zhang, Ying Tan, Daoxin Dai
Summary: A silicon photonic filter with an ultra-large free spectral range was proposed and demonstrated using high-order adiabatic elliptical-microrings and bent directional couplers. The filters based on different orders of AEMs achieved a box-like spectral response with an FSR of about 37 nm. An eight-channel silicon photonic filter with a channel-spacing of around 3.2 nm and high extinction ratios of >30 dB was also demonstrated in the study.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Siqi Yan, Jeremy Adcock, Yunhong Ding
Summary: This review focuses on the application of graphene in high-performance silicon photonic devices and discusses the future trends and challenges of silicon-graphene hybrid photonic devices.
APPLIED SCIENCES-BASEL
(2022)
Article
Engineering, Electrical & Electronic
Luis Torrijos-Moran, Antoine Brimont, Amadeu Griol, Pablo Sanchis, Jaime Garcia-Ruperez
Summary: A highly compact optical switch based on slow-light-enhanced bimodal interferometry in one-dimensional silicon photonic crystals is proposed and demonstrated, showing high efficiency operation with low power consumption. The device engineering highly dispersive and broadband bimodal regions for high-performance operation by exploiting the different symmetry of the modes.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Jing Li, Bintong Huang, Yuanhao Wang, Aijia Li, Yong Wang, Yangyang Pan, Jia Chai, Ze Liu, Yueming Zhai
Summary: The single-molecule technique for investigating unlabeled proteins in solution is challenging, but nanopore sensing offers a label-free tool for collecting structural information. This study developed a reliable method to convert a silicon nitride nanopore into a stable nanonet platform for single-entity sensing. The nanonet provides more structural information and captures the UV-light-induced structural-change process of individual proteins.
ADVANCED MATERIALS
(2023)
Article
Optics
Lukas Elsinger, Robin Petit, Frederik Van Acker, Natalia K. Zawacka, Ivo Tanghe, Kristiaan Neyts, Christophe Detavernier, Pieter Geiregat, Zeger Hens, Dries Van Thourhout
Summary: Colloidal quantum dots (QDs) are shown to be a promising light source for visible photonics, with integrated LED devices featuring high current density, power density, and low dark current. These devices are expected to find applications in absorption spectroscopy, bio-sensing, and could potentially be used for building electrically pumped lasers at a low cost.
LASER & PHOTONICS REVIEWS
(2021)
Article
Materials Science, Multidisciplinary
Zhi-Yu Chen, Zhi-Kun Ji, Da Yin, Yue-Feng Liu, Yan-Gang Bi, Jing Feng, Hong-Bo Sun
Summary: This study introduces a simple transfer-free technique to create smaller period ordered wrinkles in SOLEDs, which enables high-quality stretchable displays. The devices maintain their brightness after repeated stretching and continuous operation, demonstrating excellent stability.
ADVANCED MATERIALS TECHNOLOGIES
(2022)
Article
Engineering, Electrical & Electronic
Takemasa Tamanuki, Hiroyuki Ito, Toshihiko Baba
Summary: This study focuses on an optical beam scanning device utilizing photonic crystal slow-light waveguides and switch trees, operated through thermo-optic tuning at a fixed wavelength. With a custom prism lens for beam collimation, the device achieved two-dimensional scanning with a small divergence angle and low power consumption.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Optics
Shengjie Wu, Wange Song, Jiacheng Sun, Zhiyuan Lin, Haoran Xin, Shining Zhu, Tao Li
Summary: Broadband asymmetric light transport is achieved in non-Hermitian coupled waveguide triplet on the lithium niobate-on-insulator (LNOI) platform. A particular mode selection and shortcut to adiabaticity are used to enhance transmission efficiency and reduce device length. This work opens up new possibilities for on-chip light manipulations in the LNOI photonic platform.
LASER & PHOTONICS REVIEWS
(2023)
Article
Chemistry, Multidisciplinary
Jun Guan, Ran Li, Xitlali G. Juarez, Alexander D. Sample, Yi Wang, George C. Schatz, Teri W. Odom
Summary: A plasmonic nanolaser architecture capable of producing white-light emission is described, utilizing a mixed dye solution as the gain material sandwiched between two different periodicity aluminum nanoparticle arrays, allowing for red, green, and blue laser emission and control of their relative intensities.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Ashwin K. Boddeti, Jun Guan, Tyler Sentz, Xitlali Juarez, Ward Newman, Cristian Cortes, Teri W. Odom, Zubin Jacob
Summary: In this experiment, long-range dipole-dipole interactions are achieved through surface lattice resonances in a plasmonic nanoparticle lattice, paving the way for engineering and controlling interactions between ensembles of emitters at room temperature.
Editorial Material
Chemistry, Multidisciplinary
Teri W. Odom
Article
Chemistry, Multidisciplinary
Young-Ah Lucy Lee, Zeynab Mousavikhamene, Abhishek Kottaram Amrithanath, Suzanne M. Neidhart, Sridhar Krishnaswamy, George C. Schatz, Teri W. Odom
Summary: This paper presents a self-regulating system that combines wrinkle-patterned hydrogels with plasmonic nanoparticle lattices. By utilizing photothermal effects, the system controls the drying of hydrogels and formation of wrinkles, offering promising design principles for future smart systems.
Article
Nanoscience & Nanotechnology
Xitlali G. Juarez, Ran Li, Jun Guan, Thaddeus Reese, Richard D. Schaller, Teri W. Odom
Summary: This paper reports the observation of band-edge states at the high-symmetry M-point in hexagonal and honeycomb plasmonic nanoparticle lattices. The coupling mechanisms between nanoparticles at high-symmetry points are important for assessing the prospects of topological states in plasmonic systems. The incorporation of organic dye solutions with the nanoparticle lattices enables M-point lasing.
Article
Chemistry, Multidisciplinary
Jeong-Eun Park, Rafael Lopez-Arteaga, Alexander D. Sample, Charles R. Cherqui, Ioannis Spanopoulos, Jun Guan, Mercouri G. Kanatzidis, George C. Schatz, Emily A. Weiss, Teri W. Odom
Summary: This paper investigates the dynamics of hybridized states from 2D Ruddlesden-Popper perovskites coupled to plasmonic nanoparticle lattices. The coupling strength can be modulated by varying the perovskite film thickness or the superstrate refractive index. The study shows that both upper and lower polaritons have shorter lifetimes than excitons and polaritons exhibit faster excited-state dynamics when they have access to additional energy transfer channels.
Editorial Material
Chemistry, Multidisciplinary
Cheng-Wei Qiu, Teri W. Odom
Article
Chemistry, Physical
Alexander D. Sample, Jun Guan, Jingtian Hu, Francisco Freire-Fernandez, Sang-Min Park, Richard D. Schaller, George C. Schatz, Teri W. Odom
Summary: This research describes the strong coupling between a plasmonic nanoparticle lattice cavity and Soret excitons in a metal-organic framework film. By infiltrating MOF pores with solvents of different refractive index, the lower polariton mode can be spectroscopically tuned. Transient absorption spectroscopy can resolve both the lower and upper polariton modes, with an estimated Rabi splitting of about 300 meV, which is nearly twice the splitting of other plasmonic cavity-organic emitter systems. The polariton modes decay faster than the uncoupled exciton. This hybrid system highlights the advantages of open plasmonic cavities for tunable coupling, as well as the usefulness of transient absorption spectroscopy in identifying polariton modes.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Chemistry, Multidisciplinary
Dongjoon Rhee, Young-Ah Lucy Lee, Teri W. Odom
Summary: This paper presents a method to generate hierarchical wrinkles in two-dimensional electronic materials, allowing for spatial control over adjacent wavelengths. A rigid fluoropolymer mold was used to pattern sacrificial polymer skin layers on various 2D materials, resulting in 2D material wrinkles with wavelengths proportional to the local skin thickness. The generation of second-generation wrinkles was also demonstrated by applying subsequent cycles of polymer skin coating, strain relief, and removal. This area-specific hierarchical wrinkling enables engineering of the local properties of 2D materials and their heterostructures.
Article
Nanoscience & Nanotechnology
Jun Guan, Jingtian Hu, Yi Wang, Max J. H. Tan, George C. Schatz, Teri W. Odom
Summary: An ultralong-range coupling was demonstrated between photonic lattices in bilayer and multilayer moire architectures, which is mediated by dark surface lattice resonances in the vertical direction. Two-dimensional plasmonic nanoparticle lattices enable twist-angle-controlled directional lasing emission, even when the lattices are spatially separated by distances exceeding three orders of magnitude of lattice periodicity. The discovery of far-field interlattice coupling opens the possibility of using the out-of-plane dimension for optical manipulation on the nanoscale and microscale.
NATURE NANOTECHNOLOGY
(2023)
Article
Nanoscience & Nanotechnology
Linrui Jin, Alexander D. Sample, Dewei Sun, Yao Gao, Shibin Deng, Ran Li, Letian Dou, Teri W. Odom, Libai Huang
Summary: By integrating two-dimensional lead halide perovskites with plasmonic nanoparticle arrays, we have established an open and versatile exciton-polariton platform, where excitons hybridize with surface lattice resonances in the strong coupling regime. We directly observed enhanced exciton transport and demonstrated an improvement of exciton migration by more than one order of magnitude. We proposed a polariton-mediated exciton transport model and obtained an average polariton velocity of approximately 1 x 10^6 m/s for states with a photonic fraction of about 40%.
Article
Chemistry, Multidisciplinary
Francisco Freire-Fernandez, Thaddeus Reese, Dongjoon Rhee, Jun Guan, Ran Li, Richard D. Schaller, George C. Schatz, Teri W. Odom
Summary: This paper presents a nanofabrication procedure that can generate multiscale substrates with quasi-random microregions of nanoparticle arrays having different periodicities and metals. The approach combines large-area nanoparticle array fabrication with solvent-assisted wrinkle lithography to control the fill factors of the arrays. It has been demonstrated that multimetallic nanoparticle arrays can function as nanoscale cavities for lasing action at low fill factors, and can exhibit lasing responses over visible and near-infrared wavelengths when multiple arrays with different periodicities are combined.
Article
Chemistry, Physical
Danqing Wang, Jingtian Hu, George C. Schatz, Teri W. Odom
Summary: This paper describes the superlattice surface lattice resonances (SLRs) exhibited by two-dimensional plasmonic nanoparticle lattices covered with microscale arrays of dielectric patches. These optical resonances can be controlled by the periodicity and size of the patterned dielectrics. With an increase in nanoparticle size, superlattice SLRs can also support quadrupole excitations with distinct dispersion diagrams.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Jin Jia, Nadia Metzkow, Sang-Min Park, Yuhao Leo Wu, Alexander D. Sample, Bundit Diloknawarit, Insub Jung, Teri W. Odom
Summary: This work presents a scaffold-templated, bottom-up synthesis method for the formation of 3D anisotropic nanofeatures on periodic arrays of gold nanoparticles. The number and length of the spikes can be controlled by adjusting the solution pH and buffer concentration. The spiky gold nanoparticle arrays fabricated using this method exhibit enhanced surface-enhanced Raman spectroscopy effect.
Article
Chemistry, Multidisciplinary
Dongjoon Rhee, Young-Ah Lucy Lee, Teri W. Odom
Summary: This paper presents an approach to generate hierarchical wrinkles in two-dimensional electronic materials with spatial control over adjacent wavelengths. The method involves the use of a rigid fluoropolymer mold to pattern a sacrificial polymer skin layer on prestrained thermoplastic sheets.