Results 41 to 50 of about 26,556 (251)

Formation of microcrystals under the influence of femtosecond laser radiation on carbon samples in liquid nitrogen [PDF]

open access: yesEPJ Web of Conferences, 2019
In this paper, we present the results of an experimental study of the carbon microcrystals formation by direct laser action on the carbon target surface at temperature of liquid nitrogen.
Khorkov Kirill   +4 more
doaj   +1 more source

Zeolite-dye micro lasers [PDF]

open access: yes, 1998
We present a new class of micro lasers based on nanoporous molecular sieve host-guest systems. Organic dye guest molecules of 1-Ethyl-4-(4-(p-Dimethylaminophenyl)-1,3-butadienyl)-pyridinium Perchlorat were inserted into the 0.73-nm-wide channel pores of ...
Abraham, M.   +6 more
core   +2 more sources

MOFs and COFs in Electronics: Bridging the Gap between Intrinsic Properties and Measured Performance

open access: yesAdvanced Functional Materials, EarlyView.
Metal‐organic frameworks (MOFs) and covalent organic frameworks (COFs) hold promise for advanced electronics. However, discrepancies in reported electrical conductivities highlight the importance of measurement methodologies. This review explores intrinsic charge transport mechanisms and extrinsic factors influencing performance, and critically ...
Jonas F. Pöhls, R. Thomas Weitz
wiley   +1 more source

Structure of supercritically dried calcium silicate hydrates (C-S-H) and structural changes induced by weathering [PDF]

open access: yes, 2013
The nanostructure of supercritically dried calcium silicate hydrates was researched. This particular drying procedure was used to avoid nanostructure modifications due to conventional drying processes.
Morales Flórez, Víctor   +1 more
core   +1 more source

Detection of Microcrystals for CryoEM

open access: yes, 2020
Here, we present a strategy to identify microcrystals from initial protein crystallization screen experiments and to optimize diffraction quality of those crystals using negative stain transmission electron microscopy (TEM) as a guiding technique. The use of negative stain TEM allows visualization along the process and thus enables optimization of ...
Simon, Weiss   +3 more
openaire   +3 more sources

Floppy hydrated salt microcrystals

open access: yes, 2022
Abstract The crystalline structure of minerals due to the highly ordered assembly of its constituent atoms, ions or molecules confers a considerable hardness and brittleness to the materials. As a result, they are generally subject to fracture.
Wijnhorst, Rozeline   +5 more
openaire   +2 more sources

Raman Microscopy at the Organic–Inorganic Interfaces in Human Calcified Aortic Valves Shows the Co‐Existence of Whitlockite Crystals and Carbonated Hydroxyapatite‐Mineralized Collagen Fibrils

open access: yesAdvanced Functional Materials, EarlyView.
This study advances our understanding of aortic valve stenosis by capturing spatially resolved chemical and structural changes at the nanoscale. The findings highlight the potential of combined Raman and electron microscopy for understanding calcification mechanisms across diverse tissue types.
Robin H. M. Van der Meijden   +11 more
wiley   +1 more source

The mechanism of recrystallization of carbon steels

open access: yesЛитьë и металлургия
A nanostructural mechanism for recrystallization of carbon steels has been developed. First, structure‑forming nanocrystals of austenite, ferrite and cementite are formed from elementary nanocrystals of iron and graphite, free iron and carbon atoms.
E. I. Marukovich   +2 more
doaj   +1 more source

Microcrystallization of Atactic Polystyrene Induced by Photooxidation Aging

open access: yesMacromolecular Materials and Engineering, 2023
Photooxidation aging, hygrothermal aging, and hot‐air aging are carried out on atactic polystyrene (aPS) samples formed by injection molding. It is interesting that microcrystals of atactic polystyrene are only found in photooxidation aging.
Zi‐rui Shen, Bin Lan, Qi Yang
doaj   +1 more source

Strategies for Loading and Releasing Peptide Therapeutics in Biodegradable Carriers

open access: yesAdvanced Functional Materials, EarlyView.
A biodegradable carrier‐based peptide delivery system is a powerful treatment platform for diverse diseases, owing to its superior therapeutic efficacy and low toxicity. This review examines the conventional peptide‐loaded carrier fabrication process and its current limitations.
Wookyoung Jang, Ki Wan Bong
wiley   +1 more source

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