Profils utilisateurs correspondant à "Robert E. Simpson"

Robert E Simpson

University of Brmingham
Adresse e-mail validée de bham.ac.uk
Cité 6053 fois

Interfacial phase-change memory

RE Simpson, P Fons, AV Kolobov, T Fukaya… - Nature …, 2011 - nature.com
Phase-change memory technology relies on the electrical and optical properties of certain
materials changing substantially when the atomic structure of the material is altered by …

Broadband polarization-independent perfect absorber using a phase-change metamaterial at visible frequencies

T Cao, C Wei, RE Simpson, L Zhang, MJ Cryan - Scientific reports, 2014 - nature.com
We report a broadband polarization-independent perfect absorber with wide-angle near unity
absorbance in the visible regime. Our structure is composed of an array of thin Au squares …

Wide bandgap phase change material tuned visible photonics

…, X Zhou, JKW Yang, RE Simpson - Advanced Functional …, 2019 - Wiley Online Library
Light strongly interacts with structures that are of a similar scale to its wavelength, typically
nanoscale features for light in the visible spectrum. However, the optical response of these …

Optical switching at 1.55 μm in silicon racetrack resonators using phase change materials

M Rudé, J Pello, RE Simpson, J Osmond… - Applied Physics …, 2013 - pubs.aip.org
An optical switch operating at a wavelength of 1.55 μm and showing a 12 dB modulation
depth is introduced. The device is implemented in a silicon racetrack resonator using an …

Time-domain separation of optical properties from structural transitions in resonantly bonded materials

…, R Bertoni, J Osmond, V Pruneri, RE Simpson… - Nature materials, 2015 - nature.com
The extreme electro-optical contrast between crystalline and amorphous states in phase-change
materials is routinely exploited in optical data storage 1 and future applications include …

Ultrastable and atomically smooth ultrathin silver films grown on a copper seed layer

…, A Carrilero, TL Chen, RE Simpson… - … applied materials & …, 2013 - ACS Publications
An effective method to deposit atomically smooth ultrathin silver (Ag) films by employing a 1
nm copper (Cu) seed layer is reported. The inclusion of the Cu seed layer leads to the …

Rewritable color nanoprints in antimony trisulfide films

…, H Wang, L Lu, Q Ruan, YS Tan, RE Simpson… - Science …, 2020 - science.org
Materials that exhibit large and rapid switching of their optical properties in the visible spectrum
hold the key to color-changing devices. Antimony trisulfide (Sb 2 S 3 ) is a chalcogenide …

The Coopersmith self-esteem inventory: A construct validation study

…, DL Redfield, RL Miller, RE Simpson - Educational and …, 1983 - journals.sagepub.com
The Coopersmith Self-Esteem Inventory (SEI) was examined using a modified version of the
Sabers and Whitney model for construct validation. The SEI, Piers-Harris Children's Self-…

Programmable Wavefront Control in the Visible Spectrum Using Low‐Loss Chalcogenide Phase‐Change Metasurfaces

…, L Lu, A Poh, TWW Mass, RE Simpson… - Advanced …, 2023 - Wiley Online Library
All‐dielectric metasurfaces provide unique solutions for advanced wavefront manipulation of
light with complete control of amplitude and phase at sub‐wavelength scales. One limitation…

Mid-infrared tunable polarization-independent perfect absorber using a phase-change metamaterial

T Cao, L Zhang, RE Simpson, MJ Cryan - JOSA B, 2013 - opg.optica.org
We present the design of a polarization-independent tunable absorbing metamaterial (MM)
in the mid-infrared wavelength regime. Our structure is composed of an array of thin gold (Au…