Results 21 to 30 of about 6,634 (264)

A quantum physics layer of epigenetics: a hypothesis deduced from charge transfer and chirality-induced spin selectivity of DNA

open access: yesClinical Epigenetics, 2023
Background Epigenetic mechanisms are informational cellular processes instructing normal and diseased phenotypes. They are associated with DNA but without altering the DNA sequence. Whereas chemical processes like DNA methylation or histone modifications
Reiner Siebert   +7 more
doaj   +1 more source

Single Photon Approach for Chirality Sensing

open access: yesPhotonics, 2023
We developed a high sensitivity optical sensor for circular birefringence using a heralded photon source. The sensor can be employed for chirality measurements and, being based on single photons, can be exploited for fragile biological sample or in ...
Fabrizio Sgobba   +4 more
doaj   +1 more source

Chiral meson physics at two loops [PDF]

open access: yesAIP Conference Proceedings, 2005
7 pages, Invited plenary talk presented at the 19th European Few-Body conference, Groningen, The Netherlands, August 23-27 ...
openaire   +2 more sources

Chiral nature of magnetic monopoles in artificial spin ice

open access: yesNew Journal of Physics, 2013
Micromagnetic properties of monopoles in artificial kagome spin ice systems are investigated using numerical simulations. We show that micromagnetics brings additional complexity into the physics of these monopoles that is, by essence, absent in spin ...
N Rougemaille   +6 more
doaj   +1 more source

Chiral vortons and cosmological constraints on particle physics [PDF]

open access: yesPhysical Review D, 2000
We investigate the cosmological consequences of particle physics theories that admit stable loops of current-carrying string - vortons. In particular, we consider chiral theories where a single fermion zero mode is excited in the string core, such as those arising in supersymmetric theories with a D-term.
Carter, Brandon, Davis, Anne-Christine
openaire   +2 more sources

Chirality: Physical Chemistry [PDF]

open access: yes, 2002
INTRODUCTION 1. The Physical Chemistry of Chirality PART 1: VIBRATIONS OF CHIRAL MOLECULES 2. Determination of the Structures of Chiral Molecules Using Vibrational Dichroism Spectroscopy 3. New Insight into Solution Structure and Dynamics of Proteins, Nucleic Acids, and Viruses from Raman Optical Activity 4.
openaire   +1 more source

Scalar spin chirality Nernst effect

open access: yesPhysical Review Research
The scalar spin chirality, which characterizes the fundamental unit of noncoplanar spin structures, plays an important role in rich chiral physics of magnetic materials.
Gyungchoon Go   +4 more
doaj   +1 more source

Electrical magnetochiral effect induced by chiral spin fluctuations

open access: yesNature Communications, 2017
The magnetism-induced chirality in electron transportation is of fundamental importantance in condensed matter physics but the origin is still unclear. Here the authors demonstrate that the asymmetric electron scattering by chiral spin fluctuations can ...
T. Yokouchi   +8 more
doaj   +1 more source

Photo-acoustic spectroscopy with widely tuneable laser enables circular dichroism mapping [PDF]

open access: yesEPJ Web of Conferences
Sensitive and reliable characterization of chirality in nanostructures and molecules is of great importance in multidisciplinary research combining physics, chemistry and nanotechnology, with potential applications in pharmaceutical and agrochemical ...
Petronijevic Emilija   +8 more
doaj   +1 more source

Multiple Weyl and double-Weyl points in the phonon dispersion of P4332 BaSi2

open access: yesFrontiers in Physics, 2023
Weyl semimetals, classified as solid-state crystals and whose Fermi energy is accurately situated at Weyl points (WPs), have received much attention in condensed matter physics over the past 10 years.
Yang Li, Yang Li
doaj   +1 more source

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