Advances in Physics: X最新文献_第5页

Strain engineering in alloy nanoparticles 合金纳米颗粒的应变工程

IF 6 2区物理与天体物理

Advances in Physics: X Pub Date : 2022-09-29 DOI: 10.1080/23746149.2022.2127330

D. Nelli, Cesare Roncaglia, C. Minnai

{"title":"Strain engineering in alloy nanoparticles","authors":"D. Nelli, Cesare Roncaglia, C. Minnai","doi":"10.1080/23746149.2022.2127330","DOIUrl":"https://doi.org/10.1080/23746149.2022.2127330","url":null,"abstract":"ABSTRACT The deformation of interatomic distances with respect to those of the perfect crystal generates atomic-level strain. In nanoalloys, strain can arise because of finite size, morphology, domain structure and lattice mismatch between their atomic compounds. Strain can strongly affect the functional properties of nanoalloys, as it alters their electronic energy levels. Moreover, atomic-level strain generates atomic-level stress, which in turn results in distortions induced by strain. When the stress accumulated in a nanoalloy exceeds a certain level, the particle can relax that stress by undergoing structural transitions such as shape and/or chemical ordering transitions. Atomic-level strain is then a powerful tool to control and manipulate the structural and functional properties of nanoalloys. This requires a combined theoretical and experimental approach both to deeply understand the physical origin of strain, and to characterize it with a sub-angstrom resolution. Here, we present a theoretical analysis of the main sources of strain in nanoalloys, we analyse how atomic-level strain can be experimentally measured with transmission electron microscopy, we discuss its effect on the functional properties of nanoalloys, finally we describe how atomic-level stress arises from atomic-level strain, and how stress can induce structural transformations at the nanoscale. Graphical abstract","PeriodicalId":7374,"journal":{"name":"Advances in Physics: X","volume":" ","pages":""},"PeriodicalIF":6.0,"publicationDate":"2022-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46090496","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 12

Ultrafast dynamics in molecular ions following UV and XUV excitation: a perspective UV和XUV激发下分子离子的超快动力学

IF 6 2区物理与天体物理

Advances in Physics: X Pub Date : 2022-09-12 DOI: 10.1080/23746149.2022.2123283

M. Hervé, A. Boyer, R. Brédy, I. Compagnon, F. Lépine

{"title":"Ultrafast dynamics in molecular ions following UV and XUV excitation: a perspective","authors":"M. Hervé, A. Boyer, R. Brédy, I. Compagnon, F. Lépine","doi":"10.1080/23746149.2022.2123283","DOIUrl":"https://doi.org/10.1080/23746149.2022.2123283","url":null,"abstract":"ABSTRACT Gas phase experiments combined with ultrafast technologies can provide information on the intrinsic properties of molecular systems at picosecond, femtosecond, or even attosecond timescales. However, these experiments are often limited to relatively simple model systems. In this context, electrospray ionization sources (ESI) have offered new perspectives as they allow to produce large or fragile molecular ions in the gas phase, mimicking molecules in their natural environment. While time-resolved UV-visible ultrafast experiments on molecular ions have been successfully developed over the past decades, efforts are still required to perform experiments using ultrashort extreme ultraviolet (XUV) pulses with the goal of reaching attosecond resolution. In this article, we present recent results obtained using the combination of ultrafast technologies and ESI sources. We show that ultrafast dynamics experiments can be performed on molecular ions without ion trapping devices and can reveal UV-induced charge transfer in small peptides with controlled micro-environment. Non-adiabatic relaxation dynamics in large (bio)molecular ions is also presented. Such experiments are compatible with high harmonic generation XUV sources as shown here in the case of a metal complex. These ultrafast dynamics studies on large molecular ions offer new perspectives in attosecond science. Graphical abstract","PeriodicalId":7374,"journal":{"name":"Advances in Physics: X","volume":" ","pages":""},"PeriodicalIF":6.0,"publicationDate":"2022-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47707885","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Group III-V semiconductors as promising nonlinear integrated photonic platforms III-V族半导体作为有前途的非线性集成光子平台

IF 6 2区物理与天体物理

Advances in Physics: X Pub Date : 2022-07-27 DOI: 10.1080/23746149.2022.2097020

Kaustubh Vyas, D. Espinosa, Daniel Hutama, S. K. Jain, Rania Mahjoub, E. Mobini, Kashif M. Awan, J. Lundeen, K. Dolgaleva

{"title":"Group III-V semiconductors as promising nonlinear integrated photonic platforms","authors":"Kaustubh Vyas, D. Espinosa, Daniel Hutama, S. K. Jain, Rania Mahjoub, E. Mobini, Kashif M. Awan, J. Lundeen, K. Dolgaleva","doi":"10.1080/23746149.2022.2097020","DOIUrl":"https://doi.org/10.1080/23746149.2022.2097020","url":null,"abstract":"ABSTRACT Group III–V semiconductors are based on the elements of groups III and V of the periodic table. The possibility to grow thin-films made of binary, ternary, and quaternary III–V alloys with different fractions of their constituent elements allows for the precise engineering of their optical properties. In addition, since many III–V compounds are direct-bandgap semiconductors, they are suitable for the development of photonic devices and integrated circuits, especially when monolithic integration is required. Moreover, the strong optical nonlinearities of III–V materials enable a fertile field of research in photonic devices for all-optical signal processing, wavelength conversion, and frequency generation. Experimentally accessing the plethora of nonlinear optical phenomena in these materials considerably facilitates the exploration of light-matter interactions. Several demonstrations have explored the optical nonlinearities in waveguides, microring resonators, photonic crystal structures, quantum dots, and lasers. In this review, we survey numerous nonlinear optical studies performed in III–V semiconductor waveguide platforms. In particular, we discuss linear and nonlinear optical properties, material growth and fabrication processes, newer hybrid material platforms, and several nonlinear optical applications of III–V semiconductor integrated optical platforms. Graphical abstract","PeriodicalId":7374,"journal":{"name":"Advances in Physics: X","volume":" ","pages":""},"PeriodicalIF":6.0,"publicationDate":"2022-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47651742","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 9

William Shakespeare’s advice on our journal 威廉·莎士比亚对我们日记的建议

IF 6 2区物理与天体物理

Advances in Physics: X Pub Date : 2022-07-26 DOI: 10.1080/23746149.2022.2099635

Richard E Palmer

引用次数: 0

Topological data analysis and machine learning 拓扑数据分析和机器学习

IF 6 2区物理与天体物理

Advances in Physics: X Pub Date : 2022-06-30 DOI: 10.1080/23746149.2023.2202331

D. Leykam, D. Angelakis

引用次数: 6

Advances in nonlinear spectroscopy using phase modulated light fields: prospective applications in perturbative and non-perturbative regimes 相位调制光场非线性光谱学研究进展:在微扰和非微扰领域的应用前景

IF 6 2区物理与天体物理

Advances in Physics: X Pub Date : 2022-06-22 DOI: 10.1080/23746149.2022.2090856

K. Karki, M. Ciappina

引用次数: 6

Optical tweezers for a bottom-up assembly of few-atom systems 用于自底向上组装少原子系统的光镊子

IF 6 2区物理与天体物理

Advances in Physics: X Pub Date : 2022-05-19 DOI: 10.1080/23746149.2022.2064231

M. Andersen

引用次数: 3

A review on non-Hermitian skin effect 非厄米集肤效应研究进展

IF 6 2区物理与天体物理

Advances in Physics: X Pub Date : 2022-05-17 DOI: 10.1080/23746149.2022.2109431

Xiujuan Zhang, Tian Zhang, Ming-Hui Lu, Yan-Feng Chen

{"title":"A review on non-Hermitian skin effect","authors":"Xiujuan Zhang, Tian Zhang, Ming-Hui Lu, Yan-Feng Chen","doi":"10.1080/23746149.2022.2109431","DOIUrl":"https://doi.org/10.1080/23746149.2022.2109431","url":null,"abstract":"ABSTRACT The past decades have witnessed the flourishing of non-Hermitian physics in non-conservative systems, leading to unprecedented phenomena of unidirectional invisibility, enhanced sensitivity and more recently the novel topological features such as bulk Fermi arcs. Among them, growing efforts have been invested to an intriguing phenomenon, known as the non-Hermitian skin effect (NHSE). Here, we review the recent progress in this emerging field. By starting from the one-dimensional (1D) case, the fundamental concepts of NHSE, its minimal model, the physical meanings and consequences are elaborated in details. In particular, we discuss the NHSE enriched by lattice symmetries, which gives rise to unique non-Hermitian topological properties with revised bulk-boundary correspondence (BBC) and new definitions of topological invariants. Then we extend the discussions to two and higher dimensions, where dimensional surprises enable even more versatile NH.SE phenomena. Extensions of NHSE assisted with extra degrees of freedom such as long-range coupling, pseudospins, magnetism, non-linearity and crystal defects are also reviewed. This is followed by the contemporary experimental progress for NHSE. Finally, we provide the outlooks to possible future directions and developments. Graphical Abstract","PeriodicalId":7374,"journal":{"name":"Advances in Physics: X","volume":" ","pages":""},"PeriodicalIF":6.0,"publicationDate":"2022-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48603368","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 61

Recent advances on time-stretch dispersive Fourier transform and its applications 时间拉伸色散傅立叶变换及其应用研究进展

IF 6 2区物理与天体物理

Advances in Physics: X Pub Date : 2022-05-11 DOI: 10.1080/23746149.2022.2067487

T. Godin, L. Sader, Anahita Khodadad Kashi, Pierre-Henry Hanzard, A. Hideur, D. Moss, R. Morandotti, G. Genty, J. Dudley, A. Pasquazi, M. Kues, B. Wetzel

{"title":"Recent advances on time-stretch dispersive Fourier transform and its applications","authors":"T. Godin, L. Sader, Anahita Khodadad Kashi, Pierre-Henry Hanzard, A. Hideur, D. Moss, R. Morandotti, G. Genty, J. Dudley, A. Pasquazi, M. Kues, B. Wetzel","doi":"10.1080/23746149.2022.2067487","DOIUrl":"https://doi.org/10.1080/23746149.2022.2067487","url":null,"abstract":"ABSTRACT The need to measure high repetition rate ultrafast processes cuts across multiple areas of science. The last decade has seen tremendous advances in the development and application of new techniques in this field, as well as many breakthrough achievements analyzing non-repetitive optical phenomena. Several approaches now provide convenient access to single-shot optical waveform characterization, including the dispersive Fourier transform (DFT) and time-lens techniques, which yield real-time ultrafast characterization in the spectral and temporal domains, respectively. These complementary approaches have already proven to be highly successful to gain insight into numerous optical phenomena including the emergence of extreme events and characterizing the complexity of laser evolution dynamics. However, beyond the study of these fundamental processes, real-time measurements have also been driven by particular applications ranging from spectroscopy to velocimetry, while shedding new light in areas spanning ultrafast imaging, metrology or even quantum science. Here, we review a number of landmark results obtained using DFT-based technologies, including several recent advances and key selected applications. GraphicalAbstract","PeriodicalId":7374,"journal":{"name":"Advances in Physics: X","volume":" ","pages":""},"PeriodicalIF":6.0,"publicationDate":"2022-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42360591","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 13

Quantum transport in topological nodal-line semimetals 拓扑节点线半金属中的量子输运

IF 6 2区物理与天体物理

Advances in Physics: X Pub Date : 2022-05-02 DOI: 10.1080/23746149.2022.2065216

Min Yang, Wei Luo, Wei Chen

{"title":"Quantum transport in topological nodal-line semimetals","authors":"Min Yang, Wei Luo, Wei Chen","doi":"10.1080/23746149.2022.2065216","DOIUrl":"https://doi.org/10.1080/23746149.2022.2065216","url":null,"abstract":"ABSTRACT Topological nodal-line semimetals offer an attractive research platform for exploring a variety of novel phenomena, which have attracted great research interest in the past decade. There are three unique features of the nodal-line semimetals: (i) band crossing along the closed loop that carries Berry phase, (ii) torus-shaped Fermi surface as the Fermi energy deviates from the nodal loop, and (iii) drumhead-like surface states induced by the band topology, which comprise the main scenarios for most of its electronic properties. Here, we review recent progress on the quantum transport theory of nodal-line semimetals. We show that the properties (i) and (ii) result in a fascinating interplay between the effective dimensionality of electron diffusion and the band topology, which may give rise to 3D weak localization or 2D weak anti-localization effect that can be probed by the magnetoconductivity induced by a weak magnetic field. Moreover, (i) and (ii) can also be revealed by the pattern of the Shubnikov–de Hass oscillation in a strong magnetic field. For the massive nodal-line semimetals with spin-orbit coupling, we show that the magnetic field can induce a topological Lifshitz transition of the Fermi torus from genus 1 to 0. Interestingly, the Lifshitz transition is in good coincidence with the sign reversal of the magnetoresistivity. Compared to the conventional Fermi sphere, the Fermi torus possesses multiple reflection channels, which may give rise to novel scattering processes such as anomalous Andreev reflection at the interface between the semimetal and a superconductor. Besides the bulk states, the drumhead surface states also possess interesting properties. It is shown that the spin polarization of the surface states can induce resonant spin-flipped reflection, which can be detected through both spin and charge transport measurements. We also briefly review the recent experimental progress on the transport properties of nodal-line semimetals and compare the results with the theoretical predictions. Graphical Abstract","PeriodicalId":7374,"journal":{"name":"Advances in Physics: X","volume":" ","pages":""},"PeriodicalIF":6.0,"publicationDate":"2022-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47937786","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5