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The quantum dots of semiconductor display novel and interesting phenomena that have not been in the bulk material. The color tunability is one of the most attractive characteristics in II-VI semiconductor nanoparticles such as CdS, ZnS,…

General Physics · Physics 2012-04-05 M. Alagar , T. Theivasanthi , A. Kubera Raja

An upgraded high-energy nanosecond pulsed laser system tailored for optical particle diagnostics and manipulation capable of pulse energies beyond Joule-level is presented. In addition to the notable output energy increase, the laser system…

Ultralight vector dark matter induces metric fluctuations that generate timing residuals in the arrival times of pulsar emissions through two distinct modes: a fast mode, sourced by coherent field oscillations, and a slow mode, arising from…

High Energy Physics - Phenomenology · Physics 2025-10-27 Jeff A. Dror , Qiushi Wei

This work reports aspect related to semi-conducting nature of nano-sized particles of lead. This attempt finds its semiconducting behaviors elaborately and such advanced insight has so far not been said in literatures. New findings of Pb…

General Physics · Physics 2014-02-05 T. Theivasanthi , M. Alagar

Liquid scintillator is widely used in particle physics experiments due to its high light yield, good timing resolution, scalability and low cost. Certain liquid scintillators exhibit pulse shape discrimination capabilities because of…

Instrumentation and Detectors · Physics 2025-12-25 Xiaojie Luo , Shuya Jin , Gaosong Li , Zepeng Li , Fenhua Lu , Yazhou Sun , Shitao Wang , Yaoguang Wang , Yifang Wang , Xiaobao Wei , Liangjian Wen

We characterize the operation of semiconductor microring lasers in an excitable regime. Our experiments reveal a statistical distribution of the characteristics of noise-triggered optical pulses that is not observed in other excitable…

Cesium lead halide nanocrystals and quantum dots are prominent materials for different types of applications because of their remarkable photophysical properties. However, they are also known to exhibit the same effects observed for…

We present a systematic study of the current-voltage characteristics and electroluminescence of gallium nitride (GaN) nanowire on silicon (Si) substrate heterostructures where both semiconductors are n-type. A novel feature of this device…

Other Condensed Matter · Physics 2007-09-04 Mariano A. Zimmler , Jiming Bao , Ilan Shalish , Wei Yi , Venkatesh Narayanamurti , Federico Capasso

Based on the Lifshitz theory we show that the illumination of one (Si) plate in the three-layer systems Au--ethanol--Si, Si--ethanol--Si and $\alpha$-Al${}_2$O${}_3$--ethanol--Si with laser pulses can change the Casimir attraction to…

Quantum Physics · Physics 2007-08-20 G. L. Klimchitskaya , U. Mohideen , V. M. Mostepanenko

Nanosecond discharges are characterized by a shift in energy branching toward the excitation of electronic levels and dissociation, making them particularly attractive for plasma chemistry. Understanding the spatiotemporal structure of…

Plasma Physics · Physics 2025-02-10 Konstantinos Kourtzanidis , Svetlana M. Starikovskaia

We describe a system for generating frequency-chirped and amplitude-shaped pulses on time scales from sub-nanosecond to ten nanoseconds. The system starts with cw diode-laser light at 780 nm and utilizes fiber-based electro-optical phase…

Atomic Physics · Physics 2016-04-20 Charles E. Rogers , Phillip L. Gould

Attosecond pulses provide unique opportunities for studies of time-resolved electron dynamics. However, focusing these pulses, typically ranging from the vacuum ultraviolet to the soft-X-ray region, remains challenging. Conventional…

An influence of plasma channel created by a filament of focused UV or IR femtosecond laser pulse ({\lambda}=248 nm or 740 nm) on characteristics of other plasma channel formed by a femtosecond pulse at the same wavelength following the…

Scintillating fibers are widely used in particle detectors, mainly for tracking. We have studied the properties and have compared the performance of different blue-emitting 250~$\mu$m diameter round double-clad scintillating fibers from…

Instrumentation and Detectors · Physics 2023-01-11 A. Bravar , Y. Demets

One of the most promising approaches for the next generation of neutrino experiments is the realization of large hybrid Cherenkov/scintillation detectors made possible by recent innovations in photodetection technology and liquid…

N-polar GaN p-n diodes are realized on single-crystal N-polar GaN bulk wafers by plasma-assisted molecular beam epitaxy growth. The current-voltage characteristics show high-quality rectification and electroluminescence characteristics with…

Materials Science · Physics 2017-06-23 YongJin Cho , Zongyang Hu , Kazuki Nomoto , Huili Grace Xing , Debdeep Jena

Thin films of laser molecular-beam epitaxy grown \textit{n}-type Ga-doped ZnO were investigated with respect to their optical properties. Intense room-temperature photoluminescence (PL) in the near-band edge (NBE) region was observed.…

Materials Science · Physics 2009-11-11 T. Makino , Y. Segawa , S. Yoshida , A. Tsukazaki , A. Ohtomo , M. Kawasaki , H. Koinuma

In order to describe properties of an equilibrated quark-gluon plasma, QCD at finite temperature (and density) has to be considered. Besides lattice calculations, which can be applied only to static quantities at zero density, perturbative…

High Energy Physics - Phenomenology · Physics 2009-10-31 Markus H. Thoma

We present the main features of CITIUS, a new light source for ultrafast science, generating tunable, intense, femtosecond pulses in the spectral range from IR to XUV. The XUV pulses (about 10^5-10^8 photons/pulse in the range 14-80 eV) are…

The microscopic dynamics of laser-driven coherent synchrotron emission transmitted through thin foils are investigated using particle-in-cell simulations. For normal incidence interactions, we identify the formation of two distinct electron…

Plasma Physics · Physics 2016-02-29 S. Cousens , B. Reville , B. Dromey , M. Zepf