Results 61 to 70 of about 406,967 (342)

Engineering chiral density waves and topological band structures by multiple-$Q$ superpositions of collinear up-up-down-down orders [PDF]

open access: yes, 2016
Magnetic orders characterized by multiple ordering vectors harbor noncollinear and noncoplanar spin textures and can be a source of unusual electronic properties through the spin Berry phase mechanism.
Hayami, Satoru   +2 more
core   +2 more sources

Chirality detection of enantiomers using twisted optical metamaterials

open access: yesNature Communications, 2017
Many naturally occurring biomolecules, such as amino acids, sugars and nucleotides, are inherently chiral. Enantiomers, a pair of chiral isomers with opposite handedness, often exhibit similar physical and chemical properties due to their identical ...
Yang Zhao   +5 more
semanticscholar   +1 more source

Chiral Nanoceramics

open access: yesAdvanced Materials, 2020
AbstractThe study of different chiral inorganic nanomaterials has been experiencing rapid growth during the past decade, with its primary focus on metals and semiconductors. Ceramic materials can substantially expand the range of mechanical, optical, chemical, electrical, magnetic, and biological properties of chiral nanostructures, further stimulating
Jinchen Fan, Nicholas A. Kotov
openaire   +4 more sources

Chiral supergravity [PDF]

open access: yesJournal of High Energy Physics, 2009
We study the linearized approximation of N=1 topologically massive supergravity around AdS3. Linearized gravitino fields are explicitly constructed. For appropriate boundary conditions, the conserved charges demonstrate chiral behavior, so that chiral gravity can be consistently extended to chiral supergravity.
Becker, Melanie   +2 more
openaire   +3 more sources

The role of chirality and plastic crystallinity in the optical and mechanical properties of chlorosomes

open access: yesiScience, 2022
Summary: The most efficient light-harvesting antennae found in nature, chlorosomes, are molecular tubular aggregates (TMAs) assembled by pigments without protein scaffolds.
Xinmeng Li   +3 more
doaj   +1 more source

Alternative Kullback-Leibler information entropy for enantiomers [PDF]

open access: yes, 2010
In our series of studies on quantifying chirality, a new chirality measure is proposed in this work based on the Kullback-Leibler information entropy.
Borgoo, Alex   +4 more
core   +2 more sources

Artificial Double-Helix for Geometrical Control of Magnetic Chirality [PDF]

open access: yesACS Nano, 2020
Chirality plays a major role in nature, from particle physics to DNA, and its control is much sought-after due to the scientific and technological opportunities it unlocks.
D. Sanz-Hernández   +11 more
semanticscholar   +1 more source

Chiral Nanotubes [PDF]

open access: yesNanomaterials, 2017
Organic nanotubes, as assembled nanospaces, in which to carry out host–guest chemistry, reversible binding of smaller species for transport, sensing, storage or chemical transformation purposes, are currently attracting substantial interest, both as biological ion channel mimics, or for addressing tailored material properties.
Andrea Nitti   +2 more
openaire   +4 more sources

C2α‐carbanion‐protonating glutamate discloses tradeoffs between substrate accommodation and reaction rate in actinobacterial 2‐hydroxyacyl‐CoA lyase

open access: yesFEBS Open Bio, EarlyView.
Enzymes of the 2‐hydroxyacyl‐CoA lyase group catalyze the condensation of formyl‐CoA with aldehydes or ketones. Thus, by structural adaptation of active sites, practically any pharmaceutically and industrially important 2‐hydroxyacid could be biotechnologically synthesized. Combining crystal structure analysis, active site mutations and kinetic assays,
Michael Zahn   +4 more
wiley   +1 more source

Quantum mechanical considerations on algebraic structure of central molecular chirality [PDF]

open access: yes, 2004
The chiral algebra of tetrahedral molecules, derived from Fischer projections, is discussed in the framework of quantum mechanics. A quantum chiral algebra is obtained whose operators, acting as rotations or inversions, commute with the Hamiltonian of ...
Avalos   +24 more
core   +1 more source

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