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Convection of liquid metals drives large natural processes and is important in technical processes. Model experiments are conducted for research purposes where simulations are expensive and the clarification of open questions requires novel…

Fluid Dynamics · Physics 2024-04-18 David Weik , Zehua Dou , Dirk Räbiger , Tobias Vogt , Sven Eckert , Jürgen Czarske , Lars Büttner

Raman spectroscopy has been used to identify defective bonding in neon and silicon ion irradiated single crystals of 6H-SiC. Observable differences exist in the C-C bonding region corresponding to different defect structures for neon and…

Materials Science · Physics 2020-07-06 Alexander J. Leide , Matthew J. Lloyd , Richard I. Todd , David E. J. Armstrong

Scattering scanning near-field optical microscopy (s-SNOM) has emerged as a powerful nanoscale spectroscopic tool capable of characterizing individual biomacromolecules and molecular materials. However, applications of scattering-based…

The vibrational and electronic properties of 2-dimensinal (2D) materials can be efficiently tuned by external strain due to their good stretchability. Resonant Raman spectroscopy is a versatile tool to study the physics of phonons,…

Mesoscale and Nanoscale Physics · Physics 2019-06-05 Chaoyu Song , Fengren Fan , Ningning Xuan , Shenyang Huang , Chong Wang , Guowei Zhang , Fanjie Wang , Qiaoxia Xing , Yuchen Lei , Zhengzong Sun , Hua Wu , Hugen Yan

We discuss how to analyze the optical conductivity and Raman spectra of multi-orbital systems using the velocity and the Raman vertices in a similar way Raman vertices were used to disentangle nodal and antinodal regions in cuprates. We…

Strongly Correlated Electrons · Physics 2013-03-01 B. Valenzuela , M. J. Calderon , G. Leon , E. Bascones

We present a Raman scattering spectroscopic study of boron imidazolate metal-organic frameworks (BIFs) with three different magnetic metal ions and one non-magnetic in a wide frequency range from 25 to 1700 cm$^{-1}$, which covers local…

Materials Science · Physics 2023-06-21 Jackson Davis , Soumyodip Banerjee , Pilar Beccar-Varela , V. Sara Thoi , Natalia Drichko

An efficient approach for the simulation of ion scattering from solids is proposed. For every encountered atom, we take multiple samples of its thermal displacements among those which result in scattering with high probability to finally…

Materials Science · Physics 2011-05-18 V. A. Khodyrev , R. Andrzejewski , A. Rivera , D. O. Boerma , J. E. Prieto

Nuclear inelastic scattering (NIS) of synchrotron radiation has been used to investigate the dynamics of tin ions chelated by DNA. Theoretical NIS spectra have been simulated with the help of density functional theory (DFT) calculations…

Complex 3D integration of photonic and electronic integrated circuits is of particular interest to carry the photonics roadmap and to address challenges but involves mechanical stress, often detrimental for the behavior of optical…

We revisit laser intensity noise in the context of stimulated Raman scattering (SRS), which has recently proved to be a key technique to provide label free images of chemical bonds in biological and medical samples. Contrary to most…

Instrumentation and Detectors · Physics 2019-10-29 Xavier Audier , Sandro Heuke , Peter Volz , Ingo Rimke , Hervé Rigneault

Micro-ring resonators (MRRs) "trap" incoming light, and therefore, have been shown to achieve extremely high local intensities of light. Thus, they can be used to facilitate highly non-linear optical signals. By embedding materials that…

Mesoscale and Nanoscale Physics · Physics 2024-09-04 A. Sharma , Y. Li , M. K. Prasad , W. L. Ho , S. T. Chu , I. V. Borzenets

Adoption of renewable energy is essential to address the challenge of climate change, but that necessitates energy storage technologies. Lithium-ion batteries, the most ubiquitous solution, are insufficient for large-scale applications, so…

Materials Science · Physics 2023-04-19 Rastislav Turányi , Sanghamitra Mukhopadhyay

Spectroscopic stimulated Raman scattering (SRS) imaging has become a useful tool finding a broad range of applications. Yet, wider adoption is hindered by the bulky and environmentally-sensitive solid-state optical parametric oscillator…

Optics · Physics 2021-08-20 Hongli Ni , Peng Lin , Yifan Zhu , Meng Zhang , Yuying Tan , Yuewei Zhan , Ji-Xin Cheng

We use vortex photon fields with orbital and spin angular momentum to probe chiral fluctuations within liquid crystals. In the regime of iridescence with a well-defined pitch length of chirality, we find low energy Raman scattering that can…

Soft Condensed Matter · Physics 2023-08-21 Silvia Müllner , Florian Büscher , Angela Möller , Peter Lemmens

Understanding the interaction of charge carriers with lattice vibrations in the quasi-equilibrium regime is crucial for semiconductor functionality. However, the structural signatures of these interactions are often too subtle for…

Materials Science · Physics 2026-03-11 Guy Reuveni , Maya Levy Greenberg , Matan Menahem , Olle Hellman , Omer Yaffe

Molybdenum sulfide clusters, [Mo3S4]4+ and [Mo3S13]2-, have emerged as key molecular models for understanding active sites in Mo-S-based catalysts and as promising candidates for energy conversion applications. Despite their importance,…

Materials Science · Physics 2025-08-14 Pardis Adams , Jan Bühler , Angel Labordet Alvarez , David Tilley , Mirjana Dimitrievska

UV-Vis spectroscopy is a workhorse in analytical chemistry that finds application in life science, organic synthesis and energy technologies like photocatalysis. In its traditional implementation with cuvettes, it requires sample volumes in…

Chemical Physics · Physics 2025-02-28 Björn Altenburger , Joachim Fritzsche , Christoph Langhammer

A high-precision hypernuclear experiment has been performed at the Mainz Microtron (MAMI) to determine the hypertriton {\Lambda} binding energy via decay-pion spectroscopy. A key element of this measurement is an accurate calibration of the…

Van der Waals (vdW) magnets have rapidly emerged as a fertile playground for novel fundamental physics and exciting applications. Despite the impressive developments over the past few years, technical limitations pose a severe challenge to…

Mesoscale and Nanoscale Physics · Physics 2024-07-31 Woongki Na , Pyeongjae Park , Siwon Oh , Junghyun Kim , Allen Scheie , David Alan Tennant , Hyun Cheol Lee , Je-Geun Park , Hyeonsik Cheong

Spontaneous Raman scattering (SpRS) is a weak non-linear effect, particularly relevant to classical-quantum coexistence transmission and sensing applications. In classical transmission, the relevant Raman effect is stimulated Raman…