108 citations · 207 across the 4 of their papers we have counts for
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Origin of Negative Longitudinal Piezoelectric Effect
Shi Liu, R. E. Cohen
Piezoelectrics with negative longitudinal piezoelectric coefficients will contract in the direction of an applied electric field. Such piezoelectrics are thought to be rare but the…
Stable Charged Antiparallel Domain Walls in Hyperferroelectrics
Shi Liu, R. E. Cohen
Charge-neutral 180 domain walls that separate domains of antiparallel polarization directions are common structural topological defects in ferroelectrics. In normal ferroel…
Multiscale Simulations of Defect Dipole-Enhanced Electromechanical Coupling at Dilute Defect Concentrations
Shi Liu, R. E. Cohen
The role of defects in solids of mixed ionic-covalent bonds such as ferroelectric oxides is complex. Current understanding of defects on ferroelectric properties at the single-defe…
Ultra-fast electric field control of giant electrocaloric effect in ferroelectrics
Yubo Qi, Shi Liu, Aaron M. Lindenberg +1
There is a surge of interest in developing environmentally friendly cooling technology based on the solid--state electrocaloric effect (ECE). Here, we point out that negative ECE w…