Profils utilisateurs correspondant à "Robert E. Simpson"
Robert E SimpsonUniversity of Brmingham Adresse e-mail validée de bham.ac.uk Cité 6053 fois |
Interfacial phase-change memory
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 …
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
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 …
absorbance in the visible regime. Our structure is composed of an array of thin Au squares …
Wide bandgap phase change material tuned visible photonics
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 …
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
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 …
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
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 …
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 …
nm copper (Cu) seed layer is reported. The inclusion of the Cu seed layer leads to the …
Rewritable color nanoprints in antimony trisulfide films
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 …
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-…
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…
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
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…
in the mid-infrared wavelength regime. Our structure is composed of an array of thin gold (Au…