Results 71 to 80 of about 78,610 (291)

Cooling of cryogenic electron bilayers via the Coulomb interaction

, 2011
Heat dissipation in current-carrying cryogenic nanostructures is problematic because the phonon density of states decreases strongly as energy decreases.
B. K. Ridley, J. D. Jackson, J. H. Davies, John King Gamble, Mark Friesen, N. W. Ashcroft, Robert Joynt, S. N. Coppersmith   +7 more
core   +1 more source

Closed-cycle, low-vibration 4 K cryostat for ion traps and other applications [PDF]

, 2019
In-vacuo cryogenic environments are ideal for applications requiring both low temperatures and extremely low particle densities. This enables reaching long storage and coherence times for example in ion traps, essential requirements for experiments with ...
King, S. A., Leopold, T., López-Urrutia, J. R. Crespo, Micke, P., Pfeifer, T., Schmidt, P. O., Schmöger, L., Schwarz, M., Spieß, L. J., Stark, J.   +9 more
core   +4 more sources

Cryogenically-cooled Yb:YGAG ceramic mode-locked laser

Optics Express, 2016
This work reports on a liquid-nitrogen-cooled, SESAM mode-locked Yb:YGAG (Yb:Y(3)Ga(2)Al(3)O(12)) ceramic laser. The Yb:YGAG has a similar structure to Yb:YAG, but its emission spectrum at low temperature remains much broader, which is suitable for ultrashort pulse generation and amplification.
J, Mužík, M, Jelínek, V, Jambunathan, T, Miura, M, Smrž, A, Endo, T, Mocek, V, Kubeček   +7 more
openaire   +2 more sources

Silver Ion‐Mediated [hk1]‐Oriented Sb2Se3 Crystal Growth for Efficient Photoelectrochemical Hydrogen Evolution

Advanced Functional Materials, EarlyView.
Ag+‐mediated hydrothermal crystal engineering promotes preferential [hk1]‐oriented growth of Sb2Se3 via an ultrathin MoOx interlayer, improving crystallinity and suppressing non‐radiative recombination. The optimized Ag+ treatment photocathode delivers 24.7 mA cm−2 at 0 VRHE and improved stability, revealing an ion‐modulated route to high‐performance ...
Ziying Zhang, Zhenbin Wang, Mirjana Dimitrievska, Miloš Baljozović, Yongping Gan, Pardis Adams, Sanghyun Bae, Thomas Moehl, Wenzhe Niu, Xiang jiu Guan, S. David Tilley   +10 more
wiley   +1 more source

A Study of Cooling Time Reduction of Interferometric Cryogenic Gravitational Wave Detectors Using a High-Emissivity Coating

, 2013
In interferometric cryogenic gravitational wave detectors, there are plans to cool mirrors and their suspension systems (payloads) in order to reduce thermal noise, that is, one of the fundamental noise sources.
Chen, D., Kimura, N., Koike, S., Kuroda, K., Ohashi, M., Sakakibara, Y., Suzuki, T., Tokoku, C., Uchiyama, T., Yamamoto, K.   +9 more
core   +1 more source

Scalable Thermal Engineering via Femtosecond Laser‐Direct‐Written Phononic Nanostructures

Advanced Functional Materials, EarlyView.
This study demonstrates that femtosecond laser‐induced periodic surface structures (fs‐LIPSS) can function as phononic metasurfaces, reducing thermal conductivity below the plain thin‐film limit. Phonon Monte Carlo analysis reveals that the periodic structures restrict phonon mean free paths.
Hiroki Hamma, Roman Anufriev, Kazuyoshi Fushinobu, Masahiro Nomura, Byunggi Kim   +4 more
wiley   +1 more source

Deterministic hBN Bubbles as a Versatile Platform for Studies on Single‐Photon Emitters

Advanced Functional Materials, EarlyView.
Single‐photon emitters (SPEs) in hBN are promising for quantum technologies; however, in exfoliated samples their activation is required, limiting reproducibility of previous studies. This work introduces a large‐area MOVPE‐grown hBN platform that hosts SPEs without prior activation.
Piotr Tatarczak, Tomasz Fąs, Jan Pawłowski, Aleksandra Krystyna Dąbrowska, Jan Suffczyński, Mateusz Tokarczyk, Piotr Wróbel, Andrzej Wysmołek, Johannes Binder   +8 more
wiley   +1 more source

Cryogenics for LDR [PDF]

Three cryogenic questions of importance to Large Deployable Reflector (LDR) are discussed: the primary cooling requirement, the secondary cooling requirement, and the instrument changeout ...
Kittel, Peter
core   +1 more source

Creating long-lived neutral-atom traps in a cryogenic environment [PDF]

, 1995
We describe techniques for creating long-lived magneto-optical and magnetostatic traps for neutral atoms. These traps exist in a sealed cryogenic environment with a temperature near 4 K, where the background gas pressure can be extremely low.
Libbrecht, K. G., Willems, P. A.
core   +1 more source

Magnetism and Nonlinear Charge Transport in NiFe2O4/γ‐Al2O3/SrTiO3 Heterostructure: Toward Spintronic Applications

Advanced Functional Materials, EarlyView.
In this report, we demonstrate that a crystalline phase of 52nm thick NiFe2O4 can be grown by RF sputtering on top of γ‐Al2O3(8nm)/SrTiO3 at a significantly low temperature (150 °C) without compromising the mobility and carrier density of the 2D electron gas at the γ‐Al2O3(8nm)/SrTiO3 interface.
Amit Chanda, Thor Hvid‐Olsen, Christina Hoegfeldt, Anshu Gupta, Alessandro Palliotto, Fardin Ghaffari‐Tabrizi, Maja A. Dunstan, Kasper S. Pedersen, Dae‐Sung Park, Damon J. Carrad, Thomas Sand Jespersen, Felix Trier   +11 more
wiley   +1 more source