Results 51 to 60 of about 675,095 (343)

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

Prospects and Limitations of Carbon Nanotube Field Emission Electron Sources

CHIMIA, 2002
Today the most mature technology to produce gated micro field electron emitter arrays is the so-called Spindt-type metal micro-tip process. The drawbacks of the Spindt-type process are the expensive production, the critical lifetime in technical
Oliver Gröning, Richard Clergereaux, Lars-Ola Nilsson, Pascal Ruffieux, Pierangelo Gröning, Louis Schlapbach   +5 more
doaj   +1 more source

ITER relevant multi-emissive sheaths at normal magnetic field inclination

Nuclear Fusion, 2022
Reliable modeling of macroscopic melt motion induced by fast transients requires the accurate and computationally efficient description of the emitted current density that escapes to the pre-sheath.
P. Tolias, M. Komm, S. Ratynskaia, A. Podolnik   +3 more
doaj   +1 more source

Theory of electron transport and emission from a semiconductor nanotip

, 2019
An effective mass based model accounting for the conduction band quantization in a high aspect ratio semiconductor nanotip is developed to describe injected electron transport and subsequent electron emission from the nanotip. A transfer matrix formalism
Huang, Chengkun, Kwan, Thomas J. T., Piryatinski, Andrei   +2 more
core   +1 more source

PBF‐LB/M of Ti‐6Al‐4V: High‐Pressure Solution Treatment and Aging for Applications in a Sustainable Aerospace

Advanced Engineering Materials, EarlyView.
Additive manufacturing (AM) allows great geometric freedom for lightweight components. As parts are progressively optimized exploiting potentials in AM leading in smaller material cross sections, high pressure solution treating and aging (STA) treatments show an enormous potential for strongly improving material properties.
Mika León Altmann, Andre Danzig, Freerk Syassen, Rainer Fechte‐Heinen, Anastasiya Toenjes   +4 more
wiley   +1 more source

High-Energy Subcycle Electron Emission Driven by Spatiotemporally Confined THz Fields

Physical Review X
Tip-based structures offer a pathway to strong-field, optical-driven field emission, holding the potential for generating high-brightness ultrashort electron sources.
Jianwei Ying, Lufei Liu, Lingbin Zheng, Dace Su, Xie He, Jingui Ma, Hongwen Xuan, Dongfang Zhang   +7 more
doaj   +1 more source

Nonlinear double Compton scattering in the full quantum regime

, 2012
A detailed analysis of the process of two photon emission by an electron scattered from a high-intensity laser pulse is presented. The calculations are performed in the framework of strong-field QED and include exactly the presence of the laser field ...
A. Di Piazza, F. Mackenroth, I. V. Bazarov, J. D. Jackson, V. B. Berstetskii, V. N. Baier   +5 more
core   +1 more source

Interaction between Molten Al‐Killed Mn–B Steel and Carbon‐Bonded MgO Refractories Based on Recyclates

Advanced Engineering Materials, EarlyView.
High‐temperature interactions between low‐sulfur Al‐killed Mn–B steel and MgO–C refractories (0 and 50 wt% recyclates) are studied via finger immersion tests (1600 °C). Surface‐active elements influence infiltration. MgO/CaS layer forms, along with spinel and calcium silicate.
Matheus Roberto Bellé, Lukas Neubert, Anton Yehorov, Till M. J. Stadtmüller, Christos G. Aneziris, Olena Volkova   +5 more
wiley   +1 more source

Transport and Field Emission Properties of MoS2 Bilayers

Nanomaterials, 2018
We report the electrical characterization and field emission properties of MoS 2
Francesca Urban, Maurizio Passacantando, Filippo Giubileo, Laura Iemmo, Antonio Di Bartolomeo   +4 more
doaj   +1 more source

Emission and its back-reaction accompanying electron motion in relativistically strong and QED-strong pulsed laser fields

, 2010
The emission from an electron in the field of a relativistically strong laser pulse is analyzed. At pulse intensities of J > 2 10^22 W/cm2 the emission from counter-propagating electrons is modified by the effects of Quantum ElectroDynamics (QED), as ...
Mourou, Gérard A., Naumova, Natalia M., Nees, John A., Sokolov, Igor V., Yanovsky, Victor P.   +4 more
core   +3 more sources