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The photorecombination spectrum of 48Ti18+ was measured employing the merged electron-ion beams technique at a heavy-ion storage ring. The experimental electron-ion collision energy range 0-80 eV comprises all dielectronic recombination…

We investigate how the presence of a single-particle mobility edge in a system can generate strong heat current rectification. Specifically, we study a quadratic bosonic chain subject to a quasi-periodic potential and coupled at its…

Statistical Mechanics · Physics 2019-07-17 Vinitha Balachandran , Stephen R. Clark , John Goold , Dario Poletti

An electrode contact-related mechanism for the operational instability of organic electronic devices is proposed and confirmed via observation of a water-induced change in charge-injection barrier eights at the…

Applied Physics · Physics 2020-01-28 Ryo Nouchi

A physical system connected to two thermal reservoirs at different temperatures is said to act as a heat rectifier when it is able to bias the heat current in a given direction, similarly to an electronic diode. We propose to quantify the…

n-TPA-IFA organic material was synthesized and deposited on p-Si by spin coating method to produce n-TPA-IFA/p-Si heterojunction diode. We determined that the dielectric constant and energy band gap of TPA-IFA organic material were 3.91 and…

Applied Physics · Physics 2024-02-08 Sukru Cavdar , Pinar Oruc , Serkan Eymur , Nihat Tugluoglu

We propose to measure the superradiance effect by observing the current through a semiconductor double-dot ststem. An electron and a hole are injected separately into one of the quantum dots to form an exciton and then recombine…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Y. N. Chen , D. S. Chuu , T. Brandes

A new type of radiation detector, a p-type modified electrode germanium diode, is presented. The prototype displays, for the first time, a combination of features (mass, energy threshold and background expectation) required for a…

Nuclear Experiment · Physics 2011-05-12 P. S. Barbeau , J. I. Collar , O. Tench

We provide a theoretical framework for the development of a solid-state thermal rectifier through a confinement in the available population of phonons on one side of an asymmetrically graded film stack. Using a modification of the phonon…

Mesoscale and Nanoscale Physics · Physics 2020-02-26 Brian F. Donovan , Ronald J. Warzoha

The hetero junction between the different materials often gives the rectification effect; e.g., pn junction is used for diode. On the other hand, the Josephson junction between the two superconductors is assumed to show symmetric response…

Mesoscale and Nanoscale Physics · Physics 2021-06-09 Kou Misaki , Naoto Nagaosa

The in-plane motion of an electron on helium can couple to superconducting microwave resonators via electrical dipole coupling, offering a robust and rapid readout scheme. In previous efforts, microwave resonator designs for electrons on…

Longstanding problems in the comparison of very accurate hyperfine-shift measurements to theory were partly overcome by precise measurements on few-electron highly-charged ions. Still the agreement between theory and experiment is…

Atomic Physics · Physics 2009-11-11 R. Schuch , E. Lindroth , S. Madzunkov , M. Fogle , T. Mohamed , Paul Indelicato

We consider a system formed by two different segments of particles, coupled to thermal baths, one at each end, modeled by Langevin thermostats. The particles in each segment interact harmonically and are subject to an on-site potential, for…

Statistical Mechanics · Physics 2025-11-18 Lucianno Defaveri , Alexandre A. A. Almeida , Celia Anteneodo

It is shown that above the temperature of maximum abundance, recombination rates into the excited states of He-like ions that are calculated using earlier, more approximate methods differ markedly from rates obtained from recent…

Astrophysics · Physics 2007-11-26 J. Oelgoetz , C. J. Fontes , H. L. Zhang , M. Montenegro , S. N. Nahar , A. K. Pradhan

We propose a possible route to achieve high thermoelectric efficiency in molecular junctions by combining a local chemical tuning of the molecular electronic states with the use of semiconducting electrodes. The former allows to control the…

Materials Science · Physics 2009-08-05 D. Nozaki , H. Sevinçli , W. Li , R. Gutierrez , G. Cuniberti

Thin films of hydrogenated amorphous carbon (a-C:H) deposited by radio frequency plasma-enhanced chemical vapour deposition (rf-PECVD) have been studied for various applications. An interesting property of these films is their high…

Materials Science · Physics 2007-05-23 Paul Shashi , F. J. Clough

The transport of molecules in confined media is subject to entropic barriers. So theoretically, asymmetry of the confinement length may lead to molecular ratchets with entropy as the only driving force for the biased transport. We address…

Soft Condensed Matter · Physics 2016-12-20 D. Lairez , M. -C. Clochard , J. -E. Wegrowe

A wireless power transfer experiment suitable for senior physics undergraduates that operates between 3 and 4 MHz is described and demonstrated in detail. The apparatus consists of a pair of identical resonant coils that can be moved…

Physics Education · Physics 2018-12-04 S. D. Delichte , Y. J. Lu , J. S. Bobowski

Ar XIII is found to be unique with new features in electron-ion recombination not seen in any other ion. The ion has been studied with the unified method which provides a theoretically self-consistent set of atomic parameters for the…

Astrophysics · Physics 2009-11-10 Sultana N. Nahar

The significant discrepancy in the difference of squared nuclear charge radii $\Delta R^2$ of $^{3,4}$He obtained from electronic-atom or muonic-atom energy levels is a puzzle. In this paper, we show that the tension is resolved by…

Voltage doubler rectifiers are usually applied to systems with high voltage and low current requirement. An X band voltage doubler rectifier has been developed with 72% conversion efficiency. To the best of our knowledge, the obtained…

Applied Physics · Physics 2025-12-12 Feifei Tan , Changjun Liu