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Sub-{\mu}m thin samples are essential for spectroscopic purposes. The development of flat micro-jets enabled novel spectroscopic and scattering methods for investigating molecular systems in the liquid phase. However characterization of the…

化学物理 · 物理学 2022-02-21 Yi-Ping Chang , Zhong Yin , Tadas Balciunas , Hans Jakob Worner , Jean-Pierre Wolf

We show that measured optical transmittance of an ultra thin gas depends on the detector size. To this end we conducted an experiment that compares transmittances measured in parallel with a pair of detectors with different diameters…

仪器与探测器 · 物理学 2021-03-19 Jakub M. Ratajczak

Scanning electron microscopy (SEM) of nanoscale objects in their native conditions and at different temperatures are of critical importance in revealing details of their interactions with ambient environments. Currently available…

材料科学 · 物理学 2023-07-19 Ahmed S. Al-Asadi , Jie Zhang , Jianbo Li , Radislav A. Potyrailo , Andrei Kolmakov

Scanning acoustic microscopy (SAM) has been employed since microscopic images are widely used for biomedical or materials research. Acoustic imaging is an important and well-established method used in nondestructive testing (NDT),…

图像与视频处理 · 电气工程与系统科学 2022-08-09 Shubham Kumar Gupta , Azeem Ahmad , Prakhar Kumar , Frank Melandso , Anowarul Habib

Energy dissipation is a fundamental process governing the dynamics of physical, chemical, and biological systems. It is also one of the main characteristics distinguishing quantum and classical phenomena. In condensed matter physics, in…

We report herein the pressure dependent thermal contact resistance (Rc) between Wollaston wire thermal probe and samples which is evaluated within the framework of an analytical model. This work presents heat transfer between the Wollaston…

介观与纳米尺度物理 · 物理学 2018-03-14 Dheeraj Pratap , Rakibul Islam , Patricia Al-Alam , Jaona Randrianalisoa , Nathalie Trannoy

Radiative heat transfer between parallel objects separated by deep sub-wavelength distances and subject to large thermal gradients (>100 K) could enable breakthrough technologies for electricity generation and thermal transport control.…

介观与纳米尺度物理 · 物理学 2016-06-22 Raphael St-Gelais , Linxiao Zhu , Shanhui Fan , Michal Lipson

Recent measurements suggest free electrons created in ultra-high energy cosmic ray extensive air showers (EAS) can interact with neutral air molecules producing Bremsstrahlung radiation in the microwave regime. The microwave radiation…

The thermoelectric properties of a nanoscale germanium segment connected by aluminium nanowires are studied using scanning thermal microscopy. The germanium segment of 168\,nm length features atomically sharp interfaces to the aluminium…

The interaction of an object with its surrounding bath can lead to a coupling between the object's internal degrees of freedom and its center-of-mass motion. This coupling is especially important for nanomechanical oscillators, which are…

仪器与探测器 · 物理学 2018-04-10 Erik Hebestreit , René Reimann , Martin Frimmer , Lukas Novotny

A number of experiments for measuring anisotropies of the Cosmic Microwave Background use scanning strategies in which temperature fluctuations are measured along circular scans on the sky. It is possible, from a large number of such…

天体物理学 · 物理学 2009-10-30 J. Delabrouille , K. M. Górski , E. Hivon

A theory is presented to describe the heat-flux radiated in near-field regime by a set of interacting nanoemitters held at different temperatures in vacuum or above a solid surface. We show that this thermal energy can be focused and even…

光学 · 物理学 2020-01-01 Philippe Ben-Abdallah

The analysis of the 21 cm signature of cosmic string wakes is extended in several ways. First we consider the constraints on $G\mu$ from the absorption signal of shock heated wakes laid down much later than matter radiation equality.…

宇宙学与河外天体物理 · 物理学 2015-06-04 Oscar F. Hernandez , Robert H. Brandenberger

The effect of non-planar substrate surface on homogeneity and quality of cold sprayed (CS) deposits was studied by scanning acoustic microscopy (SAM). Fe coatings were cold sprayed onto Al substrates containing artificially introduced…

Thermal transpiration effects are commonly encountered in low pressure measurements with capacitance diaphragm gauges. They arise from the temperature difference between the measurement volume and the temperature stabilised manometer.…

化学物理 · 物理学 2014-02-07 Barthélémy Daudé , Hadj Elandaloussi , Christof Janssen

Spatially-resolved Raman spectra of individual pristine suspended carbon nanotubes are observed under electrical heating. The Raman G+ and G- bands show unequal temperature profiles. The preferential heating is more pronounced in short…

介观与纳米尺度物理 · 物理学 2009-11-13 Vikram V. Deshpande , Scott Hsieh , Adam W. Bushmaker , Marc Bockrath , Stephen B. Cronin

Room-temperature and low-temperature (77 K) scanning tunneling spectroscopy (STS) and voltage-dependent scanning tunneling microscopy (STM) data are used to study the local electronic properties of the quasi-one-dimensional Si(557)-Au…

介观与纳米尺度物理 · 物理学 2014-02-19 M. Sauter , R. Hoffmann , C. Surgers , H. v. Lohneysen

Surface temperature measurements were performed with a Scanning Thermal Microscope mounted with a thermoresistive wire probe of micrometrSurface temperature measurements were performed with a Scanning Thermal Microscope mounted with a…

In the present work I analyze the factors that affect signal generation in the measurement of photothermal expansion with an atomic force microscopy probe. I discuss the general properties of the signal transduction mechanism considering…

应用物理 · 物理学 2023-02-07 Luca Quaroni

We report demonstrations of both quadrature squeezed vacuum and photon number difference squeezing generated in an integrated nanophotonic device. Squeezed light is generated via strongly driven spontaneous four-wave mixing below threshold…