J
John Cumings
Researcher at University of Maryland, College Park
Publications - 109
Citations - 10369
John Cumings is an academic researcher from University of Maryland, College Park. The author has contributed to research in topics: Carbon nanotube & Nanotube. The author has an hindex of 40, co-authored 106 publications receiving 9486 citations. Previous affiliations of John Cumings include University of California & Michigan Technological University.
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Expanded graphite as superior anode for sodium-ion batteries
Yang Wen,Kai He,Yujie Zhu,Fudong Han,Yunhua Xu,Isamu Matsuda,Yoshitaka Ishii,John Cumings,Chunsheng Wang +8 more
TL;DR: Expanded graphite is reported as a Na-ion battery anode, prepared through a process of oxidation and partial reduction on graphite, which has an enlarged interlayer lattice distance yet retains an analogous long-range-ordered layered structure to graphite.
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Low-Friction Nanoscale Linear Bearing Realized from Multiwall Carbon Nanotubes
John Cumings,Alex Zettl +1 more
TL;DR: The controlled and reversible telescopic extension of multiwall carbon nanotubes is demonstrated, thus realizing ultralow-friction nanoscale linear bearings and constant-force nanosprings and near perfect, wear-free surfaces.
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Rotational actuators based on carbon nanotubes
A. M. Fennimore,T. D. Yuzvinsky,Wei-Qiang Han,Michael S. Fuhrer,Michael S. Fuhrer,John Cumings,John Cumings,Alex Zettl +7 more
TL;DR: This work reports on the construction and successful operation of a fully synthetic nanoscale electromechanical actuator incorporating a rotatable metal plate, with a multi-walled carbon nanotube serving as the key motion-enabling element.
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Direct mechanical measurement of the tensile strength and elastic modulus of multiwalled carbon nanotubes
TL;DR: In this article, a tensile strength of 0.15 TPa was computed for individual carbon nanotubes in-situ in a transition electron microscope, based on the force required to break the tube.
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Anisotropic Swelling and Fracture of Silicon Nanowires during Lithiation
Xiao Hua Liu,He Zheng,He Zheng,Li Zhong,Shan Huang,Khim Karki,Liqiang Zhang,Liqiang Zhang,Yang Liu,Akihiro Kushima,Wentao Liang,Jiangwei Wang,Jeong Hyun Cho,Eric Epstein,Shadi A. Dayeh,S. Tom Picraux,Ting Zhu,Ju Li,Ju Li,John P. Sullivan,John Cumings,Chunsheng Wang,Scott X. Mao,Zhizhen Ye,Sulin Zhang,Jian Yu Huang +25 more
TL;DR: This anisotropic swelling results in lithiated Si nanowires with a remarkable dumbbell-shaped cross section, which develops due to plastic flow and an ensuing necking instability that is induced by the tensile hoop stress buildup in the lithiated shell.