Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Fatima Eftekhari"'
Autor:
Xin He, Yajing Liu, Kumar Ganesan, Arman Ahnood, Paul Beckett, Fatima Eftekhari, Dan Smith, Md Hemayet Uddin, Efstratios Skafidas, Ampalavanapillai Nirmalathas, Ranjith Rajasekharan Unnithan
Publikováno v:
APL Photonics, Vol 5, Iss 4, Pp 046104-046104-10 (2020)
A multispectral image camera captures image data within specific wavelength ranges in narrow wavelength bands across the electromagnetic spectrum. Images from a multispectral camera can extract a additional information that the human eye or a normal
Externí odkaz:
https://doaj.org/article/96cc78aeb9064a6fb4cd207008050193
Publikováno v:
AOS Australian Conference on Optical Fibre Technology (ACOFT) and Australian Conference on Optics, Lasers, and Spectroscopy (ACOLS) 2019.
The spatial filtering of optical signals has been demonstrated previously with metasurface thin-films created from arrays of structured optical elements. We consider the problem of changing the symmetry of their response with changes to the in-plane
Publikováno v:
Physical review letters. 123(1)
Metasurface thin films created from arrays of structured optical elements have been shown to perform spatial filtering of optical signals. To extend their usefulness it is important that the symmetry of their response with changes to the in-plane wav
Publikováno v:
Optics Express. 28:3505
Metasurfaces have recently emerged as a promising technology to realize flat and ultra-thin optical elements that can manipulate light at sub-wavelength scale. The typical design flow of a metasurface involves tedious Finite Difference Time Domain (F
Autor:
Fatima Eftekhari, Yuerui Lu, Zai-Quan Xu, Wenlong Cheng, Malin Premaratne, Weiren Zhu, Qiaoliang Bao, Yi Chen, Wei Xiong, Yue Tang, Pengzhen Guo, Kae Jye Si, Debabrata Sikdar, Shuang Zhang
Publikováno v:
ACS Nano. 8:11086-11093
We introduce Plasmene- in analogy to graphene-as free-standing, one-particle-thick, superlattice sheets of nanoparticles ("meta-atoms") from the "plasmonic periodic table", which has implications in many important research disciplines. Here, we repor
Publikováno v:
Nature Physics. 5:915-919
Optical tweezers use the forces exerted by light to manipulate objects at the micrometre scale. An approach in which the target particle itself plays an active part now achieves this using a lower light intensity. This reduction means that heat-sensi
Publikováno v:
CLEO: 2014.
We present a plasmonic circuit architecture for performing linear mathematical operations on optical signals. We demonstrate experimentally how one such nano-scale circuit performs a difference operation giving a measure of subwavelength optical phas
Autor:
Fatima Eftekhari, Timothy J. Davis
Publikováno v:
CLEO: 2013.
The chiral optical response is an ability to distinguish between states of circular polarization. We show theoretically and experimentally how to obtain a strong chiral response by exploiting phase shifts in arrays of subwavelength-scale plasmonic st
Autor:
Timothy J. Davis, Han-Hao Cheng, Alison M. Funston, Kristy C. Vernon, Chamanei S. Perera, Fatima Eftekhari
Publikováno v:
Optics Express. 23:10188
In this paper we excite bound long range stripe plasmon modes with a highly focused laser beam. We demonstrate highly confined plasmons propagating along a 50 µm long silver stripe 750 nm wide and 30 nm thick. Two excitation techniques were studied:
Publikováno v:
Optics Letters. 39:2994
An ensemble of interacting metal nanostructures supporting localized surface plasmon resonances can be described as a plasmonic circuit. We show that such circuits can perform all-optical linear mathematical operations on multiple input signals, a me