Results 101 to 110 of about 485,962 (354)

“Writing” Crystal Phases in Amorphous Calcium Carbonate via Laser‐Induced Patterned Transformations

open access: yesAdvanced Functional Materials, EarlyView.
Laser‐induced crystallization enabling the patterning of amorphous calcium carbonate into various distinct phases is introduced. This approach provides spatial control over polymorph selection, both crystalline and amorphous, inspired by biomineralization pathways.
Hadar Shaked   +6 more
wiley   +1 more source

Namdinator – automatic molecular dynamics flexible fitting of structural models into cryo-EM and crystallography experimental maps

open access: yesIUCrJ, 2019
Model building into experimental maps is a key element of structural biology, but can be both time consuming and error prone for low-resolution maps.
Rune Thomas Kidmose   +5 more
doaj   +1 more source

Fourier-Space Crystallography as Group Cohomology

open access: yes, 2001
We reformulate Fourier-space crystallography in the language of cohomology of groups. Once the problem is understood as a classification of linear functions on the lattice, restricted by a particular group relation, and identified by gauge transformation,
A. Bienenstock   +24 more
core   +1 more source

Proton uptake mechanism in bacteriorhodopsin captured by serial synchrotron crystallography

open access: yesScience, 2019
Refilling the proton pump Proteins are dynamic. Rearrangements of side chains, secondary structure, and entire domains gate functional transitions on time scales ranging from picoseconds to milliseconds. Weinert et al.
T. Weinert   +12 more
semanticscholar   +1 more source

BioMAX – the first macromolecular crystallography beamline at MAX IV Laboratory

open access: yesJournal of Synchrotron Radiation, 2020
BioMAX is the first macromolecular crystallography beamline at the first fourth-generation storage ring, the 3 GeV storage ring at MAX IV Laboratory. It is a highly automated, user-friendly, microfocus beamline that provides excellent performance for ...
T. Ursby   +41 more
semanticscholar   +1 more source

Tumor Microenvironment‐responsive Nanocatalyst for Targeted Chemodynamic Cancer Therapy

open access: yesAdvanced Healthcare Materials, EarlyView.
An Tumor microenvironment‐responsive nanocatalyst system composed of PLGA‐encapsulated Ca–Fe peroxide and polyarginine enables sustainable Fenton reaction in tumors. Low levels of H2O2 (50–100 µm) initiate the nanoparticle degradation, while polyarginine‐derived nitric oxide accelerates Fe3+ reduction, leading to self‐amplifying •OH generation for ...
Jun Ma, Jingjing Qiu, Shiren Wang
wiley   +1 more source

What is a crystal? [PDF]

open access: yes, 2007
Almost 25 years have passed since Shechtman discovered quasicrystals, and 15 years since the Commission on Aperiodic Crystals of the International Union of Crystallography put forth a provisional definition of the term crystal to mean ``any solid having ...
Baake M.   +7 more
core   +4 more sources

Understanding the adsorption process in ZIF-8 using high pressure crystallography and computational modelling

open access: yesNature Communications, 2018
Some porous crystalline solids change their structure upon guest inclusion. Unlocking the potential of these solids for a wide variety of applications requires full characterisation of the response to adsorption and the underlying framework–guest ...
C. Hobday   +7 more
semanticscholar   +1 more source

Computational Modeling of Reticular Materials: The Past, the Present, and the Future

open access: yesAdvanced Materials, EarlyView.
Reticular materials are advanced materials with applications in emerging technologies. A thorough understanding of material properties at operating conditions is critical to accelerate the deployment at an industrial scale. Herein, the status of computational modeling of reticular materials is reviewed, supplemented with topical examples highlighting ...
Wim Temmerman   +3 more
wiley   +1 more source

An efficient method for LEED crystallography [PDF]

open access: yes, 1990
Determination of periodic surface structures from analysis of LEED intensity data is usually based on the evaluation of continuous I/V-spectra for a large number of model structures for which all the structural parameters have to be refined ...
Clarke   +26 more
core   +1 more source

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