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Molecular representation is a critical element in our understanding of the physical world and the foundation for modern molecular machine learning. Previous molecular machine learning models have employed strings, fingerprints, global…

Machine Learning · Computer Science 2025-05-28 Daniil A. Boiko , Thiago Reschützegger , Benjamin Sanchez-Lengeling , Samuel M. Blau , Gabe Gomes

Using p-aminothiophenol (PATP) molecules on a gold substrate as prototypical examples and high vacuum tip-enhanced Raman spectroscopy (HV-TERS), we show that the vibrational spectra of those molecules are distinctly different from those in…

Atomic and Molecular Clusters · Physics 2015-03-10 Mengtao Sun , Yurui Fang , Zhenyu Zhang , Hongxing Xu

Molecular laser cooling and trapping requires addressing all spontaneous decays to excited vibrational states that occur at the $\gtrsim 10^{-4} - 10^{-5}$ level, which is accomplished by driving repumping transitions out of these states.…

Atomic Physics · Physics 2023-06-06 Nickolas H. Pilgram , Arian Jadbabaie , Chandler J. Conn , Nicholas R. Hutzler

Molecular electronics targets tiny devices exploiting the electronic properties of the molecular orbitals, which can be tailored and controlled by the chemical structure/conformation of the molecules. Many functional devices have been…

The enhancement of the inherently weak optical activity of solvated molecules by superchiral fields, crucial for detecting their chirality, is a research frontier of photonics and the basis of novel chiroptical detection schemes. Here, we…

A virtual vibrational spectrometer, based on efficient software exploring unrestricted Hartree-Fock approximation, has been proposed to perform computational spectroscopy of radicals. The computational device allows obtaining spectra of IR…

Chemical Physics · Physics 2020-08-26 Elena F. Sheka , V. A. Popova

Conventionally, high-throughput computational materials searches start from an input set of bulk compounds extracted from material databases, and this set is screened for candidate materials for specific applications. In contrast, many…

Materials Science · Physics 2023-04-11 Rachel Woods-Robinson , Matthew K. Horton , Kristin A. Persson

Cell proliferation and migration highly relate to normal tissue self-healing, therefore it is highly significant for artificial controlling. Recently, vibrational strong coupling between biomolecules and Mid-infrared (MIR) light photons has…

Genomics · Quantitative Biology 2023-08-07 Xingkun Niu , Feng Gao , Shaojie Hou , Shihao Liu , Xinmin Zhao , Jun Guo , Liping Wang , Feng Zhang

We apply the Anharmonic Oscillator Symmetry Model to the description of vibrational excitations in ${\cal D}_{3h}$ and ${\cal T}_d$ molecules. A systematic procedure can be used to establish the relation between the algebraic and…

chem-ph · Physics 2008-02-03 A. Frank , R. Lemus , R. Bijker , F. Perez-Bernal , J. M. Arias

Machine learning over-fitting caused by data scarcity greatly limits the application of machine learning for molecules. Due to manufacturing processes difference, big data is not always rendered available through computational chemistry…

Machine Learning · Computer Science 2020-11-20 Ziyang Zhang , Yingtao Luo

We have undertaken a major enhancement of our IDL-based simulation tools developed earlier for modeling microwave and X-ray emission. The object-based architecture provides an interactive graphical user interface that allows the user to…

Solar and Stellar Astrophysics · Physics 2015-06-22 Gelu M. Nita , Gregory D. Fleishman , Alexey A. Kuznetsov , Eduard P. Kontar , Dale E. Gary

The design is suggested, and possible operation parameters are discussed, of an instrument to inspect a skin cancer tumour in the terahertz (THz) range, transferring the image into the infrared (IR) and making it visible with the help of…

Medical Physics · Physics 2022-04-13 A. V. Postnikov , K. A. Moldosanov , N. J. Kairyev , V. M. Lelevkin

The plasmonic amplification of non-linear vibrational sum frequency spectroscopy (SFG) at the surfaces of gold nanoparticles is systematically investigated by tuning the incident visible wavelength. The SFG spectra of dodecanethiol-coated…

MOL-D database is a collection of cross-sections and rate coefficients for specific collisional processes and a web service within the Serbian Virtual Observatory (SerVO) and the Virtual Atomic and Molecular Data Center (VAMDC). This…

Instrumentation and Methods for Astrophysics · Physics 2016-03-29 V. Vujčić , D. Jevremović , A. A. Mihajlov , Lj. M. Ignjatović , V. A. Srećković , M. S. Dimitrijević , M. Malović

The motion of chemical bonds within molecules can be observed in real time, in the form of vibrational wavepackets prepared and interrogated through ultrafast nonlinear spectroscopy. Such nonlinear optical measurements are commonly…

Experimental materials data are heterogeneous and include a variety of metadata for processing and characterization conditions, making the implementation of data-driven approaches for developing novel materials difficult. In this paper, we…

Materials Science · Physics 2022-10-13 Jaeho Song , Haechan Jo , Dongwoo Lee

This article describes the development of an active Thomson Parabola ion spectrometer designed to measure the energy spectra of different multi-MeV ion species generated in laser-plasmas interactions. To do so, GEANT4 optical simulations…

Instrumentation and Detectors · Physics 2025-09-03 A. Huber , D. Raffestin , F. Hannachi , M. Huault , J. Jouve , A. Maitrallain , P. Nicolaï , B. Zielbauer , M. Tarisien

We have applied Google's TensorFlow deep learning toolkit to recognize the visualized results of the fragment molecular orbital (FMO) calculations. Typical protein structures of alpha-helix and beta-sheet provide some characteristic…

Chemical Physics · Physics 2018-04-04 Sona Saitou , Jun Iijima , Mayu Fujimoto , Yuji Mochizuki , Koji Okuwaki , Hideo Doi , Yuto Komeiji

We introduce a computational database with calculated structural, thermodynamic, electronic, magnetic, and optical properties of 820 one-dimensional materials. The materials are systematically selected and exfoliated from experimental…

Vibronic spectra of molecules are typically described within the Franck-Condon model. Here, we show that highly resolved vibronic spectra of large organic molecules on a single layer of MoS$_{2}$ on Au(111) show spatial variations in their…

Mesoscale and Nanoscale Physics · Physics 2020-03-24 Gaël Reecht , Nils Krane , Christian Lotze , Lei Zhang , Alejandro L. Briseno , Katharina J. Franke
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