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Radio-frequency (RF) driven helicon plasma sources can produce relatively high-density plasmas (n > 10^19 m-3) at relatively moderate powers (< 2 kW) in argon. However, to produce similar high-density plasmas for fusion relevant gases such…

The sun (~6000 K) and outer space (~3 K) are the original heat source and sink for human beings on Earth. The energy applications of absorbing solar irradiation and harvesting the coldness of outer space for energy utilization have…

We present a thermal rectification device concept based on far-field radiative exchange between two selective emitters. Rectification is achieved due to the fact that one of the selective emitters radiative properties are independent on…

Mesoscale and Nanoscale Physics · Physics 2014-07-14 Elyes Nefzaoui , Jérémie Drevillon , Younès Ezzahri , Karl Joulain

Layered two-dimensional (2D) materials display great potential for a range of applications, particularly in electronics. We report the large-scale synthesis of thin films of platinum diselenide (PtSe2), a thus far scarcely investigated…

We investigate the finite-temperature phase diagram of polar molecules confined in a quasi-two-dimensional geometry by a harmonic potential along the polarization axis. We employ Quantum Monte Carlo simulations to explore the strongly…

Quantum Gases · Physics 2026-05-19 Vinicius Zampronio , Matteo Ciardi , Fabio Cinti

We report measurements of the resistance of silicon MOSFETs as a function of temperature in high parallel magnetic fields where the 2D system of electrons has been shown to be fully spin-polarized. A magnetic field suppresses the metallic…

Strongly Correlated Electrons · Physics 2009-10-31 K. M. Mertes , Hairong Zheng , S. A. Vitkalov , M. P. Sarachik , T. M. Klapwijk

This article identifies the process of crystallization of thin high-$\kappa$ dielectric films and an optimal range of annealing temperature in the field of high-$\kappa$ dielectric-based metal-oxide-semiconductor (MOS) technology for its…

Materials Science · Physics 2019-10-02 Debaleen Biswas , Anil Kumar Sinha , Supratic Chakraborty

Based on first-principles calculation we predict two new thermodynamically stable layered-phases of silicon, named as silicites, which exhibit strong directionality in the electronic and structural properties. As compared to silicon…

Mesoscale and Nanoscale Physics · Physics 2014-10-01 Seymur Cahangirov , V. Ongun Ozcelik , Angel Rubio , Salim Ciraci

As personal electronic devices increasingly rely on cloud computing for energy-intensive calculations, the power consumption associated with the information revolution is rapidly becoming an important environmental issue. Several approaches…

Mesoscale and Nanoscale Physics · Physics 2019-06-25 Weiyao Zhao , Lei Chen , Zengji Yue , Zhi Li , David Cortie , Michael Fuhrer , Xiaolin Wang

We report measurements of the zero-field resistivity in dilute 2D electron system in silicon at temperatures down to 35 mK. This extends the previously explored range of temperatures by almost an order of magnitude. On the metallic side,…

Strongly Correlated Electrons · Physics 2007-05-23 S. V. Kravchenko , T. M. Klapwijk

Structural properties of the clean Si(001) surface obtained as a result of low-temperature (470--650C) pre-growth annealings of silicon wafers in a molecular-beam epitaxy chamber have been investigated. To decrease the cleaning temperature,…

Materials Science · Physics 2012-07-09 L. V. Arapkina , L. A. Krylova , K. V. Chizh , V. A. Chapnin , O. V. Uvarov , V. A. Yuryev

Radiative coolers that can passively cool objects by radiating heat into the outer space have recently received much attention. However, the ultimate limits of their performance as well as their ideal spectral design are still unknown. We…

Applied Physics · Physics 2020-08-05 Suwan Jeon , Jonghwa Shin

A novel microfabricated, all-electrical measurement platform is presented for a direct, accurate and rapid determination of the thermal conductivity and diffusivity of liquid and solid materials. The measurement approach is based on the…

Tunable dielectric meta-surface nanostructures offer incredible performance in optical application due to their extraordinary tunability of the polarization and engineering the dispersion of light with low loss in infrared range. In this…

Optics · Physics 2022-01-19 Golsa Mirbagheri , David T. Crouse

Superconducting resonators used in millimeter-submillimeter astronomy would greatly benefit from deposited dielectrics with a small dielectric loss. We deposited hydrogenated amorphous silicon films using plasma-enhanced chemical vapor…

Instrumentation and Methods for Astrophysics · Physics 2023-02-03 Bruno T. Buijtendorp , Juan Bueno , David J. Thoen , Vignesh Murugesan , Paolo M. Sberna , Jochem J. A. Baselmans , Sten Vollebregt , Akira Endo

We demonstrate rotational cooling of the silicon monoxide cation via optical pumping by a spectrally filtered broadband laser. Compared with diatomic hydrides, SiO\+ is more challenging to cool because of its smaller rotational interval.…

We study the Doppler-cooling of radial two-dimensional (2D) Coulomb crystals of trapped barium ions in a radiofrequency trap. Ions in radial 2D crystals experience micromotion of an amplitude that increases linearly with the distance from…

In this work, the thermo-optic coefficient (TOC) of the silicon-rich amorphous silicon carbide (a-SiC) thin film deposited by plasma-enhanced chemical vapor deposition is characterized. We found that the TOC of the film increases as its…

Optics · Physics 2022-09-28 Li-Yang Sunny Chang , Steve Pappert , Paul K. L. Yu

The self-limiting nature of atomic layer deposition (ALD) makes it an appealing option for growing single layers of two-dimensional van der Waals (2D-VDW) materials. In this paper it is demonstrated that a single layer of a 2D-VDW form of…

We present an experimental demonstration of passive, dynamic thermal regulation in a solid-state system with temperature-dependent thermal emissivity switching. We achieve this effect using a multilayered device, comprised of a vanadium…