Results 81 to 90 of about 117,634 (287)

Temperature Dependent Polarity Reversal in Au/Nb:SrTiO3 Schottky Junctions

, 2007
We have observed temperature-dependent reversal of the rectifying polarity in Au/Nb:SrTiO3 Schottky junctions. By simulating current-voltage characteristics we have found that the permittivity of SrTiO3 near the interface exhibits temperature dependence ...
E. Sawaguchi, H. Y. Hwang, S. M. Sze, T. Susaki, Y. Kozuka, Y. Tateyama   +5 more
core   +1 more source

Imaging of Biphoton States: Fundamentals and Applications

Advanced Functional Materials, EarlyView.
Quantum states of two photons exhibit a rich polarization and spatial structure, which provides a fundamental resource of strongly correlated and entangled states. This review analyzes the physics of these intriguing properties and explores the various techniques and technologies available to measure them, including the state of the art of their ...
Alessio D'Errico, Ebrahim Karimi
wiley   +1 more source

Relative Permittivity and Optoelectronic Performances of Halide Perovskites: Study of Combined First‐Principles Simulation and Combinatorial Synthesis

Advanced Photonics Research
Owing to their excellent optoelectronic properties, halide perovskites (HPs) have garnered significant attention in the field of optoelectronics. However, conventional HPs‐based optoelectronic devices primarily are fabricated using solution‐based ...
SangMyeong Lee, Hee Jung Kim, Young Ju Kim, Geon Woo Yoon, Oh Yeong Gong, Won Bin Kim, Hyun Suk Jung   +6 more
doaj   +1 more source

On the Bergman-Milton bounds for the homogenization of dielectric composite materials

, 2005
The Bergman-Milton bounds provide limits on the effective permittivity of a composite material comprising two isotropic dielectric materials. These provide tight bounds for composites arising from many conventional materials.
Akhlesh Lakhtakia, Andrew J. Duncan, Aspnes, Bergman, Bergman, Bergman, Bergman, Bergman, Boardman, Hashin, Lakhtakia, Mackay, Mackay, Mackay, Milton, Milton, Milton, Milton, Ramakrishna, Tom G. Mackay, Walser   +20 more
core   +1 more source

Overcoming Debye Length Limitations in Electrolyte‐Gated Transistor Biosensors Using Nanoscale‐Grooved Oxide Semiconductors Fabricated by Thermal Nanoimprint Lithography

Advanced Functional Materials, EarlyView.
Nanoscale‐grooved indium gallium oxide (IGO) semiconductors, patterned via thermal nanoimprint lithography (NIL) using CD/DVD templates, are integrated into electrolyte‐gated transistor biosensors to overcome Debye length limitations. Precisely engineered concave–convex nanostructures modulate local electrostatic potentials, extend the effective Debye ...
Jong Yu Song, Gyeongmin Lee, Dong Hyung Kim, Woo Lee, Eun‐Ah You, Young‐Geun Ha   +5 more
wiley   +1 more source

Color Routing and Beam Steering of Single‐Molecule Emission with a Spherical Silicon Nanoantenna

Advanced Functional Materials, EarlyView.
We experimentally demonstrate broadband directional emission from single molecules using a single spherical silicon nanoparticle assembled via DNA origami. By varying nanoparticle (NP) size and emitter position, we achieve unidirectional emission, beam steering, and color routing at the nanoscale, revealing modal interference as the underlying ...
María Sanz‐Paz, Nicole Siegel, Guillermo Serrera, Javier González‐Colsa, Fangjia Zhu, Karol Kołątaj, Minoru Fujii, Hiroshi Sugimoto, Pablo Albella, Guillermo P. Acuna   +9 more
wiley   +1 more source

Nanoscale dielectric properties of TiO2 in SiO2 nanocomposite deposited by hybrid PECVD method

Nano Express
In this paper, nanocomposites (TiO _2 in SiO _2 ) are produced by an advanced hybrid aerosol-PECVD method based on direct liquid injection of a non-commercial colloidal solution in an O _2 / hexamethyldisiloxane (HMDSO) low-pressure plasma.
C Villeneuve-Faure, M Mitronika, A P Dan, L Boudou, W Ravisy, M P Besland, M Richard-Plouet, A Goullet   +7 more
doaj   +1 more source

Characterization of Sub-Resonant Dielectric Spheres by Millimeter-Wave Scattering Measurements

Sensors
When measuring the size or relative permittivity of a dielectric particle, usually one of the parameters needs to be known for determining the other one. Scattering measurement methods offer an alternative that allows for extracting both the size and the
Max Lippoldt, Jan Hesselbarth
doaj   +1 more source

Dyakonov-Tamm waves guided jointly by an ordinary, isotropic, homogeneous, dielectric material and a hyperbolic, dielectric, structurally chiral material

, 2014
The planar interface of an ordinary, isotropic, homogeneous, dielectric material and a hyperbolic, dielectric, structurally chiral material can support the propagation of one or multiple Dyakonov-Tamm waves, at a specified frequency and along a specified
Faryad, Muhammad, Lakhtakia, Akhlesh
core   +1 more source

Multibit Ferroelectric HfZrO Memcapacitor for Non‐Volatile Analogue Memory and Reconfigurable Electronics

Advanced Functional Materials, EarlyView.
Ferroelectric memcapacitors enable non‐volatile, voltage‐programmable capacitance tuning for adaptive electronics. A TiN/HfZrO/TiN device stack demonstrates more than eight stable capacitance states within a 24 pF memory window in compact 60 ×$\times$ 60 μm2$\umu{\rm m}^{2}$ devices at low operating voltages.
Deepika Yadav, Spyros Stathopoulos, Patrick Foster, Andreas Tsiamis, Mohamed Awadein, Hannah Levene, Themis Prodromakis   +6 more
wiley   +1 more source