142 citations · 235 across the 11 of their papers we have counts for
13 papers
Photodetector Focal Plane Arrays Integrated with Silicon Micropyramidal Structures in MWIR
Grant W. Bidney, Joshua M. Duran, Gamini Ariyawansa +3
Light-concentrating truncated Si micropyramidal arrays with 54.7 degree sidewall angles were successfully integrated with PtSi Schottky barrier photodetectors. Four different devic…
Focusing and Diffraction of Light by Periodic Si Micropyramidal Arrays
Grant W. Bidney, Amstrong R. Jean, Joshua M. Duran +4
This research was devoted to modeling of the optical properties of Si micropyramids aimed at designing optimal structures for applications as light concentrators in mid-wave infrar…
Numerical verification of the convexification method for a frequency-dependent inverse scattering problem with experimental data
Thuy Le, Vo Anh Khoa, Michael Victor Klibanov +3
The reconstruction of physical properties of a medium from boundary measurements, known as inverse scattering problems, presents significant challenges. The present study aims to v…
Convexification inversion method for nonlinear SAR imaging with experimentally collected data
M. V. Klibanov, V. A. Khoa, A. V. Smirnov +4
This paper is concerned with the study of a version of the globally convergent convexification method with direct application to synthetic aperture radar (SAR) imaging. Results of…
An inverse problem of a simultaneous reconstruction of the dielectric constant and conductivity from experimental backscattering data
Vo Anh Khoa, Grant W. Bidney, Michael V. Klibanov +4
This report extends our recent progress in tackling a challenging 3D inverse scattering problem governed by the Helmholtz equation. Our target application is to reconstruct dielect…
Convexification and experimental data for a 3D inverse scattering problem with the moving point source
Vo Anh Khoa, Grant W. Bidney, Michael V. Klibanov +4
Inverse scattering problems of the reconstructions of physical properties of a medium from boundary measurements are substantially challenging ones. This work aims to verify the pe…
A numerical method to solve a phaseless coefficient inverse problem from a single measurement of experimental data
Michael V. Klibanov, Nikolay A. Koshev, Dinh-Liem Nguyen +3
We propose in this paper a globally numerical method to solve a phaseless coefficient inverse problem: how to reconstruct the spatially distributed refractive index of scatterers f…
Label-Free Nanoscopy with Contact Microlenses: Super-Resolution Mechanisms and Limitations
Vasily N. Astratov, Farzaneh Abolmaali, Aaron Brettin +5
Despite all the success with developing super-resolution imaging techniques, the Abbe limit poses a severe fundamental restriction on the resolution of far-field imaging systems ba…
Movable thin films with embedded high-index microspheres for super-resolution microscopy
Kenneth W. Allen, Navid Farahi, Yangcheng Li +5
Microsphere-assisted imaging emerged as a surprisingly simple way of achieving optical super-resolution imaging. In this work, we use movable PDMS thin films with embedded high-ind…
Demonstration of whispering-gallery-mode resonant enhancement of optical forces
Yangcheng Li, Alexey V. Maslov, Nicholaos I. Limberopoulos +1
We experimentally studied whispering-gallery modes(WGMs) and demonstrated resonance enhancement of optical forces evanescently exerted on dielectric microspheres. We showed that th…
Spectrally resolved resonant propulsion of dielectric microspheres
Yangcheng Li, Alexey V. Maslov, Nicholaos I. Limberopoulos +2
Use of resonant light forces opens up a unique approach to high-volume sorting of microspherical resonators with much higher uniformity of resonances compared to that in coupled-ca…
Tuning the optical forces on- and off-resonance in microspherical photonics
Yangcheng Li, Alexey V. Maslov, Ana Jofre +1
Light pressure effect has been discovered long ago and has been used as an optical method to manipulate microand nanoparticles. It is usually considered as a nonresonant effect det…
Super-Resolution Imaging by Arrays of High-Index Spheres Embedded in Transparent Matrices
Kenneth W. Allen, Navid Farahi, Yangcheng Li +4
We fabricated thin-films made from polydimethylsiloxane (PDMS) with embedded high-index (n~1.9-2.2) microspheres for super-resolution imaging applications. To control the position…