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Understanding the nature of the interface between a biomaterial implant and the biological fluid is an essential step towards creating improved implant materials. This study examined a diamond-like carbon coating biomaterial, the surface…

Materials Science · Physics 2016-11-16 Reece N. Oosterbeek , Christopher K. Seal , Margaret M. Hyland

Using a diverse set of 100 oligothiophenes, extrapolated oligomer and polymer HOMO, LUMO and HOMO-LUMO gaps are shown to be accurately estimated from the computed values of the trimer HOMO, trimer LUMO and trimer HOMO-LUMO gaps. These…

Applied Physics · Physics 2017-07-03 Ilana Y. Kanal , Steven G. Owens , Andrey B. Sharapov , Geoffrey R. Hutchison

A scheme for computing charge-transfer matrix elements with the linear combination of fragment molecular orbitals and the 'nonempirically tuned range-separated' density functional is presented. It takes account of the self-consistent…

Chemical Physics · Physics 2016-04-13 Hirotaka Kitoh-Nishioka , Koji Ando

In this article, the processes of energy absorption and coherent transfer in a dimer is studied. The dimer includes two two-level pigments --- donor and acceptor, where donor is assumed being excited by a control pulse in the time domain.…

Quantum Physics · Physics 2013-06-24 Hong-rong Li , Pei Zhang , Yingjun Liu , Fu-li Li , Shi-yao Zhu

Using photoemission spectroscopy, we determine the relationship between electronic energy level alignment at a metal-molecule interface and single-molecule junction transport data. We measure the position of the highest occupied molecular…

Mesoscale and Nanoscale Physics · Physics 2010-06-28 M. Dell'Angela , G. Kladnik , A. Cossaro , A. Verdini , M. Kamenetska , I. Tamblyn , S. Y. Quek , J. B. Neaton , D. Cvetko , A. Morgante , L. Venkataraman

The global rate of anthropogenic CO2 emission is rising, which urges the development of efficient carbon capture and storage (CCS) technologies. Among the various CO2 capture methods, adsorption by the linkers of the Metal-Organic…

Materials Science · Physics 2023-07-11 Kahkasha Parveen , Srimanta Pakhira

A new empirical potential for efficient, large scale molecular dynamics simulation of water is presented. The HIPPO (Hydrogen-like Intermolecular Polarizable POtential) force field is based upon the model electron density of a hydrogen-like…

Chemical Physics · Physics 2021-09-30 Joshua A. Rackers , Roseane R. Silva , Zhi Wang , Jay W. Ponder

The behavior of a strongly charged polymer adsorbed on an oppositely charged surface of low-dielectric constant is formulated by the functional integral method. By separating the translational, conformational, and fluctuational degrees of…

Soft Condensed Matter · Physics 2007-05-23 Chi-Ho Cheng , Pik-Yin Lai

Energy decomposition analysis (EDA) based on absolutely localized molecular orbitals (ALMOs) decomposes the interaction energy between molecules into physically interpretable components like geometry distortion, frozen interactions,…

Chemical Physics · Physics 2021-07-19 Srimukh Prasad Veccham , Joonho Lee , Yuezhi Mao , Paul R. Horn , Martin Head-Gordon

The treatment of atomic anions with Kohn-Sham density functional theory (DFT) has long been controversial since the highest occupied molecular orbital (HOMO) energy, $E_{HOMO}$, is often calculated to be positive with most approximate…

Chemical Physics · Physics 2019-03-20 Lindsey N. Anderson , M. Belén Oviedo , Bryan M. Wong

Recent experiments by Venkatamaran {\em et al.} [Nature (London) {\bf 442}, 904 (2006)] on a series of molecular wires with varying chemical compositions, revealed a linear dependence of the conductance on $\mathrm{cos}^2\theta$, where…

Cavity-magnon polaritons (CMPs) are the associated quasiparticles of the hybridization between cavity photons and magnons in a magnetic sample placed in a microwave resonator. In the strong coupling regime, where the macroscopic coupling…

Mesoscale and Nanoscale Physics · Physics 2019-12-24 Isabella Boventer , Mathias Kläui , Rair Macêdo , Martin Weides

We have performed a systematic first-principles investigation to calculate the structural, electronic, and magnetic properties of PbCrO$_{3}$, CrPbO$_{3}$ as well as their equiproportional combination. The local density approximation…

Strongly Correlated Electrons · Physics 2012-01-25 Bao-Tian Wang , Wen Yin , Wei-Dong Li , Fangwei Wang

Doped organic semiconductors are critical to emerging device applications, including thermoelectrics, bioelectronics, and neuromorphic computing devices. It is commonly assumed that low conductivities in these materials result primarily…

We develop a mathematically rigorous theory for the quantum transfer processes in degenerate donor-acceptor dimers in contact with a thermal environment. We calculate explicitly the transfer rates and the acceptor population efficiency. The…

Quantum Physics · Physics 2020-07-15 Marco Merkli , Gennady P. Berman , Avadh Saxena

Transformer blocks typically combine multi-head attention (MHA) for token mixing with gated MLPs for token-wise feature transformation, yet many choices in their parameterization remain largely empirical. We introduce Causal Energy…

Machine Learning · Computer Science 2026-05-11 Jin Xu , Camille Couturier , Victor Rühle , Saravan Rajmohan , James Hensman

Amorphous grain boundary complexions have been shown to be radiation tolerant interfaces that can also reduce grain boundary embrittlement, marking them as favorable microstructural features. However, the incorporation of these features…

Materials Science · Physics 2026-04-23 Prince Sharma , Jaime Marian , Jason R. Trelewicz , Timothy J. Rupert

Renewed focus on the P-Si system due to its potential application in quantum computing and self-directed growth of molecular wires, has led us to study structural changes induced by P upon placement on Si(001)-$p(2\times 1)$. Using…

Materials Science · Physics 2009-11-11 Prasenjit Sen , Bikash C Gupta , Inder P. Batra

The dependence of the transport properties on the specific location of the Fermi level in molecular electronics devices is studied by using electrodes of different materials. The zero-bias transport properties are shown to depend…

Mesoscale and Nanoscale Physics · Physics 2008-12-06 V. M. García-Suárez , C. J. Lambert

We study the energy structure and the coherent transfer of an extra electron or hole along aperiodic polymers made of $N$ monomers, with fixed boundaries, using B-DNA as our prototype system. We use a Tight-Binding wire model, where a site…

Soft Condensed Matter · Physics 2019-07-09 Marilena Mantela , Konstantinos Lambropoulos , Marina Theodorakou , Constantinos Simserides