Mostafa Bedewy
University of Pittsburgh
61 Papers
353 Citations
Mostafa Bedewy is an academic researcher from University of Pittsburgh. The author has contributed to research in topics: Carbon nanotube & Chemical vapor deposition. The author has an hindex of 17, co-authored 59 publications. Previous affiliations of Mostafa Bedewy include Massachusetts Institute of Technology & University of Michigan.
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Papers
Population growth dynamics of carbon nanotubes.
TL;DR: A comprehensive picture of CNT population growth which combines both chemical and mechanical cooperation is proposed, utilizing high-resolution spatial mapping of synchrotron X-ray scattering and attenuation, along with real-time height kinetics.
169
Fluence-Dependent Morphological Transitions in Laser-Induced Graphene Electrodes on Polyimide Substrates for Flexible Devices
Moataz Abdulhafez,Golnaz Najaf Tomaraei,Mostafa Bedewy +2 more
- 11 Mar 2021
TL;DR: Laser carbonization of polymers is an emerging technique that enables directly patterning conductive carbon electrodes for a plethora of flexible devices, including super-capacitors and sensors as discussed by the authors.
92
Statistical Analysis of Variation in Laboratory Growth of Carbon Nanotube Forests and Recommendations for Improved Consistency
C. Ryan Oliver,Erik S. Polsen,Eric R. Meshot,Sameh Tawfick,Sameh Tawfick,Sei Jin Park,Mostafa Bedewy,A. John Hart,A. John Hart +8 more
TL;DR: It was found that variations in ambient lab conditions can overwhelm attempts to perform parametric optimization studies, and a standard growth procedure was established, including the chemical vapor deposition (CVD) recipe, while other variables related to the furnace configuration and experimental procedure were varied.
66
Mechanical coupling limits the density and quality of self-organized carbon nanotube growth
Mostafa Bedewy,A. John Hart +1 more
TL;DR: Evidence is presented that the density and alignment of self-organized CNT growth is limited by mechanical coupling among CNTs in contact, in combination with their diameter-dependent growth rates, and it is proposed that improved manufacturing strategies for self-organization C NTs should consider both chemical and mechanical effects.
62
Scaling the Stiffness, Strength, and Toughness of Ceramic‐Coated Nanotube Foams into the Structural Regime
Anna Brieland-Shoultz,Sameh Tawfick,Sameh Tawfick,Sei Jin Park,Mostafa Bedewy,Matthew R. Maschmann,Jeffery W. Baur,A. John Hart +7 more
TL;DR: In this article, an aligned carbon nanotube (CNT) growth followed by atomic layer deposition (ALD) is demonstrated to achieve a predictable ≈1000-fold control of Young's modulus (14 MPa to 20 GPa, where E ∼ ρ 2.8), ultimate compressive strength (0.8 MPa, 0.16 GPa), and energy absorption ( 0.4 to 400 J cm-3).