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We determine the thermal evolution of the intergalactic medium (IGM) over $3\, \mathrm{Gyr}$ of cosmic time $1.8<z<5.4$ by comparing measurements of the Ly{\alpha} forest power spectrum to a suite of $\sim70$ hydrodynamical simulations. We…

Cosmology and Nongalactic Astrophysics · Physics 2019-02-13 Michael Walther , Jose Oñorbe , Joseph F. Hennawi , Zarija Lukić

The non-contact infrared thermometer (NCIT) is an important basic tool for fever screening and self-health monitoring. However, it is susceptible to the thermal shock when working in a low temperature environment, which will cause a…

Medical Physics · Physics 2021-04-22 Y. Tong , S. Zhao , H. Yang , Z. Cao , S. Chen , Z. Chen

The elimination of the off-chip frequency reference, typically a crystal oscillator, would bring important benefits in terms of size, price and energy efficiency to IEEE802.15.4 compliant radios and systems-on-chip. The stability of on-chip…

Networking and Internet Architecture · Computer Science 2019-04-18 Ioana Suciu , Filip Maksimovic , David Burnett , Osama Khan , Brad Wheeler , Arvind Sundararajan , Thomas Watteyne , Xavier Vilajosana , Kris Pister

This paper demonstrates the use of voltage noise thermometry, with a cross-correlation technique, as a dissipation-free method of thermometry inside a CMOS integrated circuit (IC). We show that this technique exhibits broad agreement with…

As spin-based quantum processors grow in size and complexity, maintaining high fidelities and minimizing crosstalk will be essential for the successful implementation of quantum algorithms and error-correction protocols. In particular,…

We theoretically investigate the enhancement of thermoelectric cooling performance in thermoelectric devices made of materials with inhomogeneous thermal conductivity, beyond the usual practice of enhancing thermoelectric figure of merit…

Mesoscale and Nanoscale Physics · Physics 2016-02-11 Tingyu Lu , Jun Zhou , Nianbei Li , Ronggui Yang , Baowen Li

We report on the performance of a prototype CMS Hadron Barrel Calorimeter (HCAL) module in a test beam. The prototype sampling calorimeter used copper absorber plates and scintillator tiles with wavelength shifting fibers for readout.…

High Energy Physics - Experiment · Physics 2009-10-31 Arie Bodek

We have designed a system to stabilize the gain of a submillimeter heterodyne receiver against thermal fluctuations of the mixing element. In the most sensitive heterodyne receivers, the mixer is usually cooled to 4 K using a closed-cycle…

We present a novel system to calibrate millimeter-wave polarimeters for CMB polarization measurements. This technique is an extension of the conventional metal mirror rotation approach, however it employs cryogenically-cooled blackbody…

Instrumentation and Methods for Astrophysics · Physics 2012-05-01 M. Hasegawa , O. Tajima , Y. Chinone , M. Hazumi , K. Ishidoshiro , M. Nagai

Power-suppressed corrections coming from the end-point integration regions in the amplitude of the process $\gamma^{*}\gamma \to \pi \pi$ at large $Q^2$ and small squared center-of-mass energy $W^2$ are calculated in the QCD hard-scattering…

High Energy Physics - Phenomenology · Physics 2009-11-10 S. S. Agaev , M. Guidal , B. Pire

An analogue testing standard IEEE 1149.4 is mainly targeted for low-frequency testing. The problem studied in this paper is extending the standard also for radio frequency testing. IEEE 1149.4 compatible measurement structures (ABMs)…

Hardware Architecture · Computer Science 2011-11-09 Pekka Syri , Juha Hakkinen , Markku Moilanen

Recent progress in the 4H-silicon-carbide-on-insulator (4H-SiCOI) platform has resulted in the demonstration of essential building blocks such as low-loss waveguides and microresonators. In this work, we add tunability to the 4H-SiCOI…

Optics · Physics 2025-06-19 Wenhan Sun , Ruixuan Wang , Jingwei Li , Haipeng Zhang , Zhensheng Jia , Qing Li

In this paper, we propose a wireless Communicator to manage and enhance a Cardiac Rhythm Management System. The system includes: (1) an on-body wireless Electrocardiogram (ECG), (2) an Intracardiac Electrogram (EGM) embedded inside an…

Computational Engineering, Finance, and Science · Computer Science 2016-02-18 Gabriel E. Arrobo , Calvin A. Perumalla , Stanley B. Hanke , Thomas P. Ketterl , Peter J. Fabri , Richard D. Gitlin

We theoretically study how one can control and enhance nonlinear thermoelectricity by regulating quantum coherence in nanostructures such as a quantum dot system or a single-molecule junction. In nanostructures, the typical temperature…

Mesoscale and Nanoscale Physics · Physics 2020-03-11 Nobuhiko Taniguchi

We propose a simple way to improve the laser gravitational-wave detectors sensitivity by means of reduction of the number of reflective coating layers of the core optics mirrors. This effects in the proportional decrease of the coating…

General Relativity and Quantum Cosmology · Physics 2013-05-30 N. V. Voronchev , S. L. Danilishin , F. Ya. Khalili

Stellar intensity interferometers correlate photons within their coherence time and could overcome the baseline limitations of existing amplitude interferometers. Intensity interferometers do not rely on phase coherence of the optical…

Instrumentation and Methods for Astrophysics · Physics 2022-02-24 Sebastian Karl , Andreas Zmija , Stefan Richter , Naomi Vogel , Dmitry Malyshev , Adrian Zink , Thilo Michel , Gisela Anton , Joachim von Zanthier , Stefan Funk

Modern multiprocessor system-on-chips (SoCs) integrate multiple heterogeneous cores to achieve high energy efficiency. The power consumption of each core contributes to an increase in the temperature across the chip floorplan. In turn,…

Systems and Control · Computer Science 2018-06-19 Ganapati Bhat , Suat Gumussoy , Umit Y. Ogras

Integrating a thermopile with a low power operational amplifier is an effective and cost-efficient approach to obtain a high performance compact Terahertz power detector. Here we present the development of such an integrated detector,…

Instrumentation and Detectors · Physics 2012-04-27 F. Voltolina , U. Dillner , E. Kessler , P. Haring Bolivar

The intrinsic thermal noise in optical fibers is the ultimate limit of fiber-based systems. However, at infrasonic frequencies, the spectral behavior of the intrinsic thermal noise remains unclear so far. We present the measurements of the…

Optics · Physics 2016-02-17 Jing Dong , Junchao Huang , Tang Li , Liang Liu

Here, a generalized induction coil sensor model, more generalized than other models, has been considered and the equivalent magnetic field of the coil thermal noise and the sensor signal to noise ratio are calculated theoretically based on…

Instrumentation and Detectors · Physics 2014-09-26 Abolghasem Nourmohammadi , Seyed Mohammad Hassan Feiz , Mohammad Hassan Asteraki