Results 251 to 260 of about 328,596 (315)

In situ observations of adsorbed microgel particles

Soft Matter, 2007
The formation and morphological changes of a pH-responsive microgel layer on silica and mica were studied by tapping mode atomic force microscopy. First, lightly cross-linked, sterically-stabilised poly(2-vinylpyridine) (P2VP) particles were adsorbed in their non-solvated latex form at pH 4.8 to produce a structurally-disordered monolayer that covers ...
Paul A, FitzGerald, Damien, Dupin, Steven P, Armes, Erica J, Wanless   +3 more
openaire   +2 more sources

In Situ Observations of Precipitation

Proceedings, annual meeting, Electron Microscopy Society of America, 1973
This paper reports preliminary observations of precipitation in several alloy systems obtained with an accurately calibrated hot stage in the AEI EM7 1MeV microscope at Imperial College. These observations, in >1μ thick specimens where precipitation is generally more characteristic of bulk, provide experimental evidence which allows existing ...
E.P. Butler, P.R. Swann
openaire   +1 more source

In situ TEM observation of magnetic materials

Microscopy Research and Technique, 2009
AbstractMagnetic nanostructures and thin films display novel magnetization reversal behavior as a function of size and shape, which makes them appropriate for a range of technological applications. The spatial resolution of in situ transmission electron microscopy techniques such as Lorentz TEM (LTEM) and off‐axis electron holography are well suited to
Mihaela, Tanase, Amanda K, Petford-Long
openaire   +2 more sources

In Situ Observation of Na2S Growth: A Step Toward High‐Energy and Safer Room Temperature Sodium Sulfur Batteries

Advances in Materials
The Na2S cathode presents a promising metal‐free sodium configuration for high‐energy room‐temperature sodium sulfur (RT Na─S) batteries. However, the rational design of Na2S cathodes to overcome their poor electronic conductivity and sluggish conversion
Z. Xiong, Si Chen, Jinqing Guo, Ningyan Cheng, Shilin Zhang, Binwei Zhang, Zidong Wei, Shigang Sun, Zaiping Guo   +8 more
semanticscholar   +1 more source

In-situ observation of grain refinement dynamics of hypoeutectic Al-Si alloy inoculated by Al-Ti-Nb-B alloy

, 2020
The grain refining behaviour of a novel Al-Ti-Nb-B alloy in Al-Si melt with low cooling rate was in-situ observed by synchrotron radiography. Nucleation and growth of α-Al dendrites in the near-isothermal Al-8Si-7Cu melts inoculated by Al-1.67Ti-3.33Nb-0.
Jin Xu, Yang Li, Ke Ma, Ya-nan Fu, E. Guo, Zongning Chen, Q. Gu, Yuexing Han, Tongmin Wang, Qian Li   +9 more
semanticscholar   +1 more source

In Situ observations of the gaseous reduction of magnetite

Metallurgical Transactions B, 1990
The microstructural changes occurring on the surfaces of magnetite samples during the reduction in H/N gas mixtures have been directly recorded using an optical heating stage technique. At low temperatures, below approximately 910 K, the iron forms a porous morphology and grows in a continuous manner at a rate dependent on the reaction temperature and ...
Matthew, S. P., Hayes, P. C.
openaire   +4 more sources

In Situ Observation of Nanoparticle Exsolution from Perovskite Oxides; from Atomic Scale Mechanistic Insight to Nanostructure Tailoring.

ACS Nano, 2019
Understanding and controlling the formation of nanoparticles at the surface of functional oxide supports is critical for tuning activity and stability for catalytic and energy conversion applications.
D. Neagu, V. Kyriakou, Ioan-Lucian Roiban, M. Aouine, Chenyang Tang, Á. Caravaca, Kalliopi Kousi, I. Schreur-Piet, I. Metcalfe, P. Vernoux, M. V. D. van de Sanden, M. N. Tsampas   +11 more
semanticscholar   +1 more source

In-situ observation as activity descriptor enables rational design of oxygen reduction catalyst for zinc-air battery

, 2020
The widespread use of metal-air batteries for mobile applications will require reduced Pt loading and enhanced catalytic activity within their cathodes to drive the sluggish oxygen reduction reaction (ORR).
Haoqing Ji, Mengfan Wang, Sisi Liu, He Sun, Jie Liu, Tao Qian, Chenglin Yan   +6 more
semanticscholar   +1 more source

An observation in situ of an auroral pulsation

Journal of Geophysical Research, 1970
Auroral pulsation observed by Aerobee rocket instruments and ground multichannel photometer indicating primarily temporal ...
T. D. Parkinson, E. C. Zipf, K. A. Dick
openaire   +1 more source

In-situ observation of colloidal crystallization

Progress in Crystal Growth and Characterization of Materials, 2016
Abstract We report contents of colloidal crystallization experiments in ISSCG-16. The participants produce two kinds of colloidal crystals, i.e., close-packed opal type crystals, and non-close-packed charged colloidal crystals. They can observe the crystallization processes by using optical microscopy and reflection spectroscopy.
Junpei Yamanaka, Yoshihisa Suzuki, Jun Nozawa, Tsutomu Sawada   +3 more
openaire   +1 more source