Harnessing optical metasurfaces for reconfigurable optoelectronic devices

Algorithm-Designed Plasmonic Nanotweezers: Quantitative Comparison by Theory, Cathodoluminescence, and Nanoparticle Trapping

Neuton Li, Jasper Cadusch, Amelia Liu, Anders J Barlow, Ann Roberts, Kenneth B Crozier

2021-07-09

Plasmonic apertures permit optical fields to be concentrated into sub-wavelength regions. This enhances the optical gradient force..

Reconsidering metasurface lasers

Dandan Wen, Jasper J Cadusch, Zhiqiang Fang, Kenneth B Crozier

2021-05-01

Long-Wave Infrared Photodetectors Based on 2D Platinum Diselenide atop Optical Cavity Substrates

Nima Sefidmooye Azar, James Bullock, Vivek Raj Shrestha, Sivacarendran Balendhran, Wei Yan, Hyungjin Kim, Ali Javey, Kenneth B Crozier

2021-04-27

Long-wave infrared (LWIR) photodetection is of high technological importance, having a wide range of applications that include the..

Light-Matter Interaction Enhancement in Anisotropic 2D Black Phosphorus via Polarization-Tailoring Nano-Optics

Nima Sefidmooye Azar, James Bullock, Sivacarendran Balendhran, Hyungjin Kim, Ali Javey, Kenneth B Crozier

2021-04-21

Black phosphorus (bP), a two-dimensional (2D) layered material, has shown great potential for infrared (IR) optoelectronics owing ..

Vectorial Holograms with Spatially Continuous Polarization Distributions

Dandan Wen, Jasper J Cadusch, Jiajun Meng, Kenneth B Crozier

2021-02-24

Metasurface-based holography presents opportunities for applications that include optical displays, data storage, and optical encr..

VCSELs with On-Facet Metasurfaces for Polarization State Generation and Detection

Dandan Wen, Jiajun Meng, Jasper J Cadusch, Kenneth B Crozier

2021-02-22

Polarization plays a critical role in optical systems that range from optical communications to imaging, lithography, metrology, a..

Plasmonic Mid-Infrared Filter Array-Detector Array Chemical Classifier Based on Machine Learning

Jiajun Meng, Jasper J Cadusch, Kenneth B Crozier

2021-02-17

Numerous applications exist for chemical detection, ranging from the industrial production of chemicals to pharmaceutical manufact..

Mid-Wave Infrared Polarization-Independent Graphene Photoconductor with Integrated Plasmonic Nanoantennas Operating at Room Temperature

Ming Ye, Yang Gao, Jasper J Cadusch, Sivacarendran Balendhran, Kenneth B Crozier

2021-01-20

Graphene photodetectors operating in the mid-wave infrared (MWIR) face challenges that include the optical absorption of monolayer..

Liquid-Metal Synthesized Ultrathin SnS Layers for High-Performance Broadband Photodetectors

Vaishnavi Krishnamurthi, Hareem Khan, Taimur Ahmed, Ali Zavabeti, Sherif Abdulkader Tawfik, Shubhendra Kumar Jain, Michelle JS Spencer, Sivacarendran Balendhran, Kenneth B Crozier, Ziyuan Li, Lan Fu, Md Mohiuddin, Mei Xian Low, Babar Shabbir, Andreas Boes, Arnan Mitchell, Christopher F McConville, Yongxiang Li, Kourosh Kalantar-Zadeh, Nasir Mahmood

2020-11-12

Atomically thin materials face an ongoing challenge of scalability, hampering practical deployment despite their fascinating prope..

Spectrally Selective Mid-Wave Infrared Detection Using Fabry-Pérot Cavity Enhanced Black Phosphorus 2D Photodiodes.

Wei Yan, Vivek Raj Shresha, Quentin Jeangros, Nima Sefidmooye Azar, Sivacarendran Balendhran, Christophe Ballif, Kenneth Crozier, James Bullock

2020-10-27

Thin two-dimensional (2D) material absorbers have the potential to reduce volume-dependent thermal noise in infrared detectors. Ho..

Visible to long-wave infrared chip-scale spectrometers based on photodetectors with tailored responsivities and multispectral filters

Jasper J Cadusch, Jiajun Meng, Benjamin J Craig, Vivek Raj Shrestha, Kenneth B Crozier

2020-09-01

Chip-scale microspectrometers, operational across the visible to long-wave infrared spectral region will enable many remote sensin..

Metasurface with metallic nanoantennas and graphene nanoslits for sensing of protein monolayers and sub-monolayers

M Ye, KB Crozier

2020-06-08

Biomolecule sensing plays an important role in both fundamental biological studies and medical diagnostic applications. Infrared (..

Mid- to long-wave infrared computational spectroscopy with a graphene metasurface modulator.

Vivek Raj Shrestha, Benjamin Craig, Jiajun Meng, James Bullock, Ali Javey, Kenneth B Crozier

2020-03-25

In recent years there has been much interest concerning the development of modulators in the mid- to long-wave infrared, based on ..

Long-wave infrared magnetic mirror based on Mie resonators on conductive substrate

Ming Ye, Shi-Qiang Li, Yang Gao, Kenneth B Crozier

2020-01-20

Metal films are often used in optoelectronic devices as mirrors and/or electrical contacts. In many such devices, however, the π-p..

Multifunctional Dielectric Metasurfaces Consisting of Color Holograms Encoded into Color Printed Images

Dandan Wen, Jasper J Cadusch, Jiajun Meng, Kenneth B Crozier

2020-01-17

A hologram records the wavefront of light from an object, but it is usually not an image itself, and looks unintelligible under di..

Algorithmic approach for designing plasmonic nanotweezers

Neuton Li, Jasper Cadusch, Kenneth Crozier

2019-11-01

We use machine learning (simulated annealing) to design plasmonic nanoapertures that function as optical nanotweezers. The nanoape..

Mid- to long-wave infrared computational spectroscopy using a subwavelength coaxial aperture array

Benjamin J Craig, Jiajun Meng, Vivek Raj Shrestha, Jasper J Cadusch, Kenneth B Crozier

2019-09-19

Miniaturized spectrometers are advantageous for many applications and can be achieved by what we term the filter-array detector-ar..

Quo vadis, plasmonic optical tweezers?

Kenneth B Crozier

2019-04-03

Conventional optical tweezers based on traditional optical microscopes are subject to the diffraction limit, making the precise tr..

Vertical Ge-Si Nanowires with Suspended Graphene Top Contacts as Dynamically Tunable Multispectral Photodetectors

Shi Qiang Li, Amit Solanki, Jacopo Frigerio, Daniel Chrastina, Giovanni Isella, Changxi Zheng, Arman Ahnood, Kumaravelu Ganesan, Kenneth B Crozier

2019-03-20

Numerous applications would be enabled by pixels for multispectral imaging whose spectral responses can be dynamically tuned and t..

Bull's eye grating integrated with optical nanoantennas for plasmonic enhancement of graphene long-wave infrared photodetectors

Nima Sefidmooye Azar, Vivek Raj Shrestha, Kenneth B Crozier

2019-03-04

Two-dimensional (2D) materials have exhibited potential for infrared detection at room temperature, yet their low light absorption..

All-dielectric nanotweezers for trapping and observation of a single quantum dot

Zhe Xu, Kenneth B Crozier

2019-02-18

We report the optical trapping of a single streptavidin-coated CdSe/ZnS quantum dot whose overall diameter is around 15-20 nm, in ..

Optical Trapping of Nanoparticles Using All-Silicon Nanoantennas

Zhe Xu, Wuzhou Song, Kenneth B Crozier

2018-12-01

The ability to optically trap nanoscale particles in a reliable and noninvasive manner is emerging as an important capability for ..

Experimental demonstration of infrared spectral reconstruction using plasmonic metasurfaces

Benjamin Craig, Vivek Raj Shrestha, Jiajun Meng, Jasper J Cadusch, Kenneth B Crozier

2018-09-15

We computationally reconstruct short- to long-wave infrared spectra using an array of plasmonic metasurface filters. We illuminate..

Controlled optical trapping and transport of a single 100 nm particle across an array of silicon nanoantennas

Z Xu, KB Crozier

2018-08-06

Origin of the anapole condition as revealed by a simple expansion beyond the toroidal multipole

Shi-Qiang Li, Kenneth B Crozier

2018-06-25

Toroidal multipoles are a topic of increasing interest in the nanophotonics and metamaterials communities. In this paper, we separ..

Electrical tuning of reflectance of graphene metasurface for unpolarized long wavelength infrared light

VR Shrestha, Y Gao, M Amani, J Bullock, A Javey, KB Crozier

2018-01-01

We demonstrate a graphene-metal metasurface for unpolarized long wavelength infrared light with electrically-tunable reflectance. ..

Experimental Demonstration of Mid-Infrared Computational Spectroscopy with a Plasmonic Filter Array

Benjamin Craig, Vivek Raj Shrestha, Jiajun Meng, Kenneth B Crozier

2018-01-01

We demonstrate mid-infrared plasmonic filters. We experimentally determine the spectrum of a mid-infrared light source using an al..

Mid-infrared Magnetic Mirror Based on a Hybrid Metal/Dielectric Metasurface

Ming Ye, Shiqiang Li, Yang Gao, Vivek Raj Shrestha, Kenneth B Crozier

2018-01-01

We propose a hybrid metal/dielectric metasurface that functions as a mid-infrared magnetic mirror. It consists amorphous silicon c..

Plasmonic filter arrays for infrared spectral reconstruction

B Craig, VR Shrestha, J Meng, KB Crozier

2017-01-01

We experimentally demonstrate an array of plasmonic infrared transmission filters. We show, by simulations that include noise, rec..