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High-energy tens (10s) to hundreds (100s) petawatt (PW) lasers are key tools for exploring frontier fundamental researches such as strong-field quantum electrodynamics (QED), and the generation of positron-electron pair from vacuum.…

Optics · Physics 2023-09-12 Jun Liu , Xiong Shen , Shuman Du , Ruxin Li

The magnetic properties of Cu97Co3 and Cu90Co10 granular alloys were measured over a wide temperature range (2 to 300K). The measurements show an unusual temperature dependence of the coercive field. A generalized model is proposed and…

Materials Science · Physics 2009-11-10 W. C. Nunes , W. S. D. Folly , J. P. Sinnecker , M. A. Novak

Colloidal Cadmium Selenide (CdSe) nanoplatelets (NPLs) are a recently developed class of efficient luminescent nanomaterial suitable for optoelectronic device applications. A change in temperature greatly affects their electronic…

Mesoscale and Nanoscale Physics · Physics 2017-10-26 Sumanta Bose , Sushant Shendre , Zhigang Song , Vijay Kumar Sharma , Dao Hua Zhang , Cuong Dang , Weijun Fan , Hilmi Volkan Demir

Monolayer transition metal dichalcogenides (TMDs) support robust excitons in the visible to near-infrared spectral range. Their reduced dielectric screening results in large binding energies, and combined with a direct bandgap in monolayer…

Two-dimensional semiconducting materials have a wide range of applications in various fields due to their excellent properties and rich physics. Here, we report a detailed investigation of the temperature dependent Raman and…

Materials Science · Physics 2025-05-05 Atul G. Chakkar , Deepu Kumar , Ashok Kumar , Mahesh Kumar , Pradeep Kumar

Polymer blends consisting of two or more polymers are important for a wide variety of industries and processes, but, the precise mechanism of their thermomechanical behaviour is incompletely understood. In order to understand clearly, it is…

Soft Condensed Matter · Physics 2021-01-12 Pashupati Pokharel , Feng Wei , Jianyi Shi , Yingmin Wang , Dequan Xiao

A broadband, thermally stable absorber is essential for thermophotovoltaic (TPV) systems to simultaneously convert solar and industrial waste heat into usable energy to meet growing power demands. Here, we proposed an ingenious…

Optics · Physics 2025-09-25 Bibekananda Nath , Ahmed Zubair

Compressibility effects in a turbulent transport of temperature field are investigated applying the quasi-linear approach for small P\'eclet numbers and the spectral $\tau$ approach for large P\'eclet numbers. Compressibility of a fluid…

Fluid Dynamics · Physics 2021-01-27 I. Rogachevskii , N. Kleeorin

Capacitance measurements as a function of voltage, frequency and temperature are useful tools to identify fundamental parameters that affect solar cell operation. Techniques such as capacitance-voltage (CV), Mott-Schottky analysis and…

Applied Physics · Physics 2021-12-23 Sandheep Ravishankar , Zhifa Liu , Uwe Rau , Thomas Kirchartz

Doppler cooling the center-of-mass motion of an optically levitated microsphere via the velocity dependent scattering force from narrow whispering gallery mode (WGM) resonances is described. Light that is red detuned from the WGM resonance…

Quantum Physics · Physics 2013-05-29 P. F. Barker

We study the optical cooling of the resonator mirror in a cavity-optomechanical system that contains an optical gain medium. We find that the optical damping rate is vanishingly small for an incoherently pumped laser above threshold. In the…

Quantum Physics · Physics 2015-06-12 Li Ge , Sanli Faez , Florian Marquardt , Hakan E. Tureci

Photoluminescence (PL) has become a common tool to characterize various properties of single-walled carbon nanotube (SWCNT) chirality distribution and the level of tube individualization in SWCNT samples. Most PL studies employ conventional…

Applied Physics · Physics 2020-01-08 S. Kollarics , J. Palotás , A. Bojtor , B. G. Márkus , P. Rohringer , T. Pichler , F. Simon

Decreasing the operation temperature of a Silicon Photo-Multiplier (SiPM) leads to a drop in its dark noise. Some experiments consider cold temperatures as an option for low noise applications of SiPM. One of those is the TAO detector,…

Instrumentation and Detectors · Physics 2021-03-17 N. Anfimov , D. Fedoseev , A. Rybnikov , A. Selyunin , S. Sokolov , A. Sotnikov

Electron transport in suspended and non-suspended GaAs point contacts (PCs) of different widths is experimentally studied. The superballistic contribution to the conductance, that demonstrates a distinctive quadratic dependence on the PC…

A dual-operation mode SNSPD is proposed. In the conventional Geiger mode, the sensor operates at temperatures well below the critical temperature, Tc, working as an event counter without sensitivity to the number of photons impinging the…

Thermal radiation is the dominant heat loss mechanism for receiver units on a parabolic solar collector plant at high temperatures. Reduction of these losses is traditionally achieved through the use of an optically selective coating on the…

Applied Physics · Physics 2020-05-29 V. S Kaluba , Khaled Mohamad , P. Ferrer

Measurements of the magnetic susceptibility and its anisotropy in the quasi-one-dimensional system o-TaS_{3} in its low-T charge density wave (CDW) ground state are reported. Both sets of data reveal below 40 K an extra paramagnetic…

Condensed Matter · Physics 2009-11-07 K. Biljakovic , M. Miljak , D. Staresinic , J. C. Lasjaunias , P. Monceau , H. Berger , F. Levy

We report on high-temperature sensing measurements using a tubular-lattice hollow-core photonic crystal fiber displaying a microstructure formed of eight 2.4 um-thick cladding tubes. The larger thickness of our fiber's cladding tubes…

We experimentally study a fiber loop laser with an integrated Erbium doped fiber (EDF). The output optical spectrum is measured as a function of the EDF temperature. We find that below a critical temperature of about 10K the measured…

Optics · Physics 2023-04-11 Eyal Buks

Photoluminescence (PL) and photoluminescence excitation (PLE) spectroscopy of pillar-suspended single-walled carbon nanotubes has been measured for temperatures between 300 K and 5 K.

Mesoscale and Nanoscale Physics · Physics 2007-05-23 J. Lefebvre , P. Finnie , Y. Homma