K
Khalid Ashraf
Researcher at University of California, Berkeley
Publications - 21
Citations - 7293
Khalid Ashraf is an academic researcher from University of California, Berkeley. The author has contributed to research in topics: Magnetization & Graphene. The author has an hindex of 13, co-authored 21 publications receiving 5830 citations. Previous affiliations of Khalid Ashraf include University of California, Riverside.
Papers
More filters
Journal ArticleDOI
Probing electric field control of magnetism using ferromagnetic resonance
Ziyao Zhou,Morgan Trassin,Ya Gao,Yuan Gao,Diana Y. Qiu,Khalid Ashraf,Tianxiang Nan,Xi Yang,Samuel R. Bowden,Daniel T. Pierce,Mark D. Stiles,John Unguris,Ming Liu,Brandon M. Howe,Gail J. Brown,Sayeef Salahuddin,Ramamoorthy Ramesh,Nian X. Sun +17 more
TL;DR: Electric field-dependent ferromagnetic resonance measurements quantify the exchange coupling strength and reveal that the CoFe magnetization is directly and reversibly modulated by the applied electric field through a ~180° switching of the canted moment in BiFeO3.
Journal ArticleDOI
Gating of Single‐Layer Graphene with Single‐Stranded Deoxyribonucleic Acids
Jian Lin,Desalegne Teweldebrhan,Khalid Ashraf,Guanxiong Liu,Xiaoye Jing,Zhong Yan,Rong Li,Mihri Ozkan,Roger K. Lake,Alexander A. Balandin,Cengiz S. Ozkan +10 more
TL;DR: Current-voltage measurements of the hybrid ssDNA/graphene system indicate a shift in the Dirac point and "intrinsic" conductance after ssDNA is patterned, and density functional theory calculations rule out significant charge transfer or modification of the graphene band structure in the presence of ssDNA fragments.
Posted Content
Shallow Networks for High-Accuracy Road Object-Detection
TL;DR: This work shows that increasing input image resolution (i.e. upsampling) offers up to 12 percentage-points higher accuracy compared to an off-the-shelf baseline, and finds situations where earlier/shallower layers of CNN provide higher accuracy than later/deeper layers.
Journal ArticleDOI
Permanent electric dipole moments of carboxyamides in condensed media: what are the limitations of theory and experiment?
Srigokul Upadhyayula,Duoduo Bao,Brent Millare,Somaia Sarwat Sylvia,K. M. Masum Habib,Khalid Ashraf,Amy Ferreira,Stephen Bishop,Robert Bonderer,Samih Baqai,Xiaoye Jing,Miroslav Penchev,Mihrimah Ozkan,Cengiz S. Ozkan,Roger K. Lake,Valentine I. Vullev +15 more
TL;DR: This work investigated the medium dependence of the molar polarization and of the permanent dipole moments of amides with different state of alkylation, and observed a solvent dependence that increased with the increase in the media polarity.
Journal ArticleDOI
Nature of magnetic domains in an exchange coupled BiFeO3/CoFe heterostructure
TL;DR: In this article, the authors used the micromagnetic model to simulate magnetization in a multidomain BiFeO3(BFO)/CoFe bilayer and showed that CoFe couples to weak ferromagnetism on the BFO surface and breaks into domains that correspond exactly with BFO domains.