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To correctly analyse data sets from current microwave detection technology, one is forced to estimate the sky signal and experimental noise simultaneously. Given a time-ordered data set we propose a formalism and method for estimating the…

Astrophysics · Physics 2009-10-31 Pedro G. Ferreira , Andrew H. Jaffe

The use of argon as a detection and shielding medium for neutrino and dark matter experiments has made the precise knowledge of the cross section for neutron capture on argon an important design and operational parameter. Since previous…

Nuclear Experiment · Physics 2019-07-08 V. Fischer , L. Pagani , L. Pickard , A. Couture , S. Gardiner , C. Grant , J. He , T. Johnson , E. Pantic , C. Prokop , R. Svoboda , J. Ullmann , J. Wang

The electrical and thermal behavior of nanoscale devices based on two-dimensional (2D) materials is often limited by their contacts and interfaces. Here we report the temperature-dependent thermal boundary conductance (TBC) of monolayer…

We demonstrate surface acoustic waves inside polystyrene microspheres of different sizes experimentally through photoacoustic microscopy and validate the experimental result with simulation. A novel method for sample preparation of a lifted…

Classical Physics · Physics 2022-03-22 Abhishek Ranjan , Anowarul Habib , Azeem Ahmad , Balpreet Singh Ahluwalia , Frank Melandsø

Current noise in nanoscale systems provides additional information beyond the electronic conductance. We report measurements at room temperature of the nonequilibrium "excess" noise in ensembles of atomic-scale gold junctions repeatedly…

Mesoscale and Nanoscale Physics · Physics 2014-06-11 Ruoyu Chen , Patrick Wheeler , D. Natelson

Controlling the air quality is of the utmost importance in today buildings. Vertical air curtains are often used to separate two different climatic zones with a view to reduce heat transfer. In fact, this research work proposes an air…

Fluid Dynamics · Physics 2020-02-27 Joao Carlos Viegas , Fernando Oliveira , Daniel Aelenei

We present experiments investigating the growth of ice crystals from water vapor in air using a free-fall convection chamber. We measured growth rates at temperatures of -5 C and -10 C as a function of supersaturation at an air pressure…

Materials Science · Physics 2009-12-15 K. G. Libbrecht , H. M. Arnold

Long-wave infrared radiation captured by a thermal camera includes (a) emission from an object governed by its temperature and emissivity, and (b) reflected radiation from the surrounding environment. Separating these components is a…

Computer Vision and Pattern Recognition · Computer Science 2026-03-31 Sriram Narayanan , Mani Ramanagopal , Srinivasa G. Narasimhan

Conducting materials typically exhibit either diffusive or ballistic charge transport. However, when electron-electron interactions dominate, a hydrodynamic regime with viscous charge flow emerges (1-13). More stringent conditions…

Photo-assisted tunneling in scanning tunneling microscopy has attracted considerable interest to combine sub-picosecond and sub-nanometer resolutions. The illumination of a junction with visible or infrared light, however, induces thermal…

Applied Physics · Physics 2024-02-27 Hüseyin Azazoglu , Rolf Möller , Manuel Gruber

In Vapor Cycle Systems, the mass flow sensor playsa key role for different monitoring and control purposes. However,physical sensors can be inaccurate, heavy, cumbersome, expensive orhighly sensitive to vibrations, which is especially…

Systems and Control · Electrical Eng. & Systems 2024-06-27 Justin Reverdi , Sixin Zhang , Saïd Aoues , Fabrice Gamboa , Serge Gratton , Thomas Pellegrini

A process which strongly amplifies both quadrature amplitudes of an oscillatory signal necessarily adds noise. Alternatively, if the information in one quadrature is lost in phase-sensitive amplification, it is possible to completely…

Mesoscale and Nanoscale Physics · Physics 2017-03-14 C. F. Ockeloen-Korppi , E. Damskägg , J. -M. Pirkkalainen , T. T. Heikkilä , F. Massel , M. A. Sillanpää

We describe an optical method to directly measure position-dependent thermal diffusivity of reflective single crystal samples across a broad range of temperatures for condensed matter physics research. Two laser beams are used, one as a…

The thermal radiative near field transport between vanadium dioxide and silicon oxide at submicron distances is expected to exhibit a strong dependence on the state of vanadium dioxide which undergoes a metal-insulator transition near room…

Atomic Force Microscopy - Infrared (AFM-IR) has emerged as a useful technique for measuring absorption spectra with spatial resolution better than the optical diffraction limit. The technique relies on the movement of a probe for atomic…

Applied Physics · Physics 2024-01-17 Luca Quaroni

We present the characterization of the photonic waveguide resonator using confocal laser scanning microscopy imaging method. Free space TEM$_{00}$ laser mode is coupled into quasi-TE$_{0}$ waveguide mode using confocal microscopy via a…

We have performed the most realistic simulation to date of the operation of a scanning tunneling microscope. Probe-sample distances from beyond tunneling to actual surface contact are covered. We simultaneously calculate forces, atomic…

Materials Science · Physics 2009-11-07 W. A. Hofer , A. J. Fisher , R. A. Wolkow , P. Gruetter

The dependences of the fundamental transition on the semiconductor quantum dot size obtained experimentally at various temperatures using different measuring methods are analyzed and compared. The possibility to extrapolate the results for…

Mesoscale and Nanoscale Physics · Physics 2014-02-11 I. V. Beloussov , V. I. Pavlenko , I. I. Dobinda

We use simultaneous electronic transport and optical characterization measurements to reveal new information about electronic and optical processes in nanoscale junctions fabricated by electromigration. Comparing electronic tunneling and…

Mesoscale and Nanoscale Physics · Physics 2015-05-28 Douglas Natelson , Daniel R. Ward , Falco Hüser , Fabian Pauly , Juan Carlos Cuevas , David A. Corley , James M. Tour

In this study, we present a novel platform based on scanning microwave microscopy for manipulating and detecting tiny vibrations of nanoelectromechanical resonators using a single metallic tip. The tip is placed on the top of a grounded…