Results 41 to 50 of about 147,238 (296)

Role of surface microgeometries on electron escape probability and secondary electron yield of metal surfaces [PDF]

, 2020
The influence of microgeometries on the Secondary Electron Yield (SEY) of surfaces is investigated. Laser written structures of different aspect ratio (height to width) on a copper surface tuned the SEY of the surface and reduced its value to less than ...
Abdolvand, A., Bajek, D., Baudin, L., Bogdanowicz, K., Calatroni, S., Chiggiato, P., Di Girolamo, B., Garcia-Tabares Valdivieso, E., Himmerlich, M., Sitko, M., Taborelli, M., Wackerow, S., Zanin, D. A.   +12 more
core   +2 more sources

Advancing Research on Biomaterials and Biological Materials with Scanning Electron Microscopy under Environmental and Low Vacuum Conditions

Advanced Engineering Materials, EarlyView.
Herein, environmental scanning electron microscopy (ESEM) is discussed as a powerful extension of conventional SEM for life sciences. By combining high‐resolution imaging with variable pressure and humidity, ESEM allows the analysis of untreated biological materials, supports in situ monitoring of hydration‐driven changes, and advances the functional ...
Jendrian Riedel, Lea Dierker, Antoine Eyram Kwame, Kim Nora Wagner, Jonas J. Unterholzner, Jan‐Henning Dirks, Dorothea Brüggemann   +6 more
wiley   +1 more source

FIELD DESORPTION MICROSCOPY OF CARBON-COATED FIELD ELECTRON EMITTERS

Физико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2021
Field electron emitters in the form of a metal tip with a carbon film on the surface have a number of promising operational properties. The characteristics of the emitter depend on the phase composition, thickness and uniformity of the film.
D.P. Bernatskii, V.G. Pavlov
doaj   +1 more source

Field Emission from Carbon Nanostructures [PDF]

Applied Sciences, 2018
Field emission electron sources in vacuum electronics are largely considered to achieve faster response, higher efficiency and lower energy consumption in comparison with conventional thermionic emitters. Carbon nanotubes had a leading role in renewing attention to field emission technologies in the early 1990s, due to their exceptional electron ...
Filippo Giubileo, Antonio Di Bartolomeo, Laura Iemmo, Giuseppe Luongo, Francesca Urban   +4 more
openaire   +2 more sources

Piezoresistive Monitoring of Carbon Nanomaterial‐Reinforced Epoxy Composites Under Cyclic and Fatigue Loading: A Review

Advanced Engineering Materials, EarlyView.
Carbon nanomaterial‐reinforced epoxy composites exhibit pronounced piezoresistive behavior, enabling intrinsic damage sensing under cyclic and fatigue loading. This review critically compares carbon nanotube and graphene systems, correlating filler content, percolation threshold, and gauge factor with sensing stability and damage evolution.
J. M. Parente, J. Nunes‐Pereira, A. P. Silva, P. N. B. Reis   +3 more
wiley   +1 more source

Filling of carbon nanotubes and nanofibres

Beilstein Journal of Nanotechnology, 2015
The reliable production of carbon nanotubes and nanofibres is a relatively new development, and due to their unique structure, there has been much interest in filling their hollow interiors.
Reece D. Gately, Marc in het Panhuis
doaj   +1 more source

Energetics and stability of nanostructured amorphous carbon

, 2003
Monte Carlo simulations, supplemented by ab initio calculations, shed light into the energetics and thermodynamic stability of nanostructured amorphous carbon.
A.G. Lyapin, B. Winkler, C. Mathioudakis, D. Donadio, D. Vanderbilt, F. Banhart, F. Banhart, G. Kresse, G. Kresse, G.A.J. Amaratunga, H. He, H.-P. Kaukonen, H.U. Jäger, I. Alexandrou, I. N. Remediakis, J. Robertson, J. Tersoff, M. G. Fyta, M. Keeffe, M. Zaiser, M.E. Kozlov, P. C. Kelires, P. Milani, P.C. Kelires, P.C. Kelires, S. Hirono, S. Subramoney, S.J. Townsend, T. Lenosky, U. Stephan   +29 more
core   +1 more source

3D‐Printed Giant Magnetoresistive (GMR) Sensors Based on Self Compliant Springs

Advanced Engineering Materials, EarlyView.
This work explores 3D‐printed GMR sensors utilizing self‐compliant spring structures and conductive PLA composites. By optimizing arm width, we achieved high piezoresistive (0.34%/mm) and magnetoresistive (0.77%/mT) sensitivities. Demonstrated through Bluetooth‐integrated pressure and magnetic position sensing, these full printed low‐cost, customizable
Josu Fernández Maestu, Nelson Pereira, Javier Vicente, Carmen Rial Tubio, Senentxu Lanceros‐Méndez   +4 more
wiley   +1 more source

Morphological effect on conductivity performance of ZnO/carbon nanotubes cotton hybrid

Applied Surface Science Advances, 2022
Carbon nanotubes cotton (CNTC) is a bulk form of superfiber materials with soft, fluffy textures and light weight consisted of lengthy thread network of carbon nanotubes physically resembles cotton fiber used in textiles industry.
Juraina Md Yusof, Ismayadi Ismail, Muhammad Rahimi Yusop, Suraya Abdul Rashid   +3 more
doaj   +1 more source

Graphitic-BN Based Metal-free Molecular Magnets From A First Principle Study

, 2005
We perform a first principle calculation on the electronic properties of carbon doped graphitic boron nitride graphitic BN. It was found that carbon substitution for either boron or nitrogen atom in graphitic BN can induce spontaneous magnetization ...
Chopra N G, G W Peng, L Liu, Ma Y, Murakami Y, Press W H, R Q Wu, Y P Feng   +7 more
core   +1 more source