246 citations · 763 across the 11 of their papers we have counts for
11 papers
Observation of Gigahertz Topological Valley Hall Effect in Nanoelectromechanical Phononic Crystals
Qicheng Zhang, Daehun Lee, Lu Zheng +8
Topological phononics offers numerous opportunities in manipulating elastic waves that can propagate in solids without being backscattered. Due to the lack of nanoscale imaging too…
Direct Visualization of Gigahertz Acoustic Wave Propagation in Suspended Phononic Circuits
Daehun Lee, Qiyu Liu, Lu Zheng +3
We report direct visualization of gigahertz-frequency Lamb waves propagation in aluminum nitride phononic circuits by transmission-mode microwave impedance microscopy (TMIM). Consi…
Unexpected Giant Microwave Conductivity in a Nominally Silent BiFeO3 Domain Wall
Yen-Lin Huang, Lu Zheng, Peng Chen +10
Nanoelectronic devices based on ferroelectric domain walls (DWs), such as memories, transistors, and rectifiers, have been demonstrated in recent years. Practical high-speed electr…
Coherent Acoustic Control of a Single Silicon Vacancy Spin in Diamond
Smarak Maity, Linbo Shao, Stefan Bogdanović +9
Phonons are considered to be universal quantum transducers due to their ability to couple to a wide variety of quantum systems. Among these systems, solid-state point defect spins…
Microwave-to-optical conversion using lithium niobate thin-film acoustic resonators
Linbo Shao, Mengjie Yu, Smarak Maity +8
We demonstrate conversion of up to 4.5 GHz-frequency microwaves to 1500 nm-wavelength light using optomechanical interactions on suspended thin-film lithium niobate. Our method uti…
Phononic band structure engineering for high-Q gigahertz surface acoustic wave resonators on lithium niobate
Linbo Shao, Smarak Maity, Lu Zheng +9
Phonons at gigahertz frequencies interact with electrons, photons, and atomic systems in solids, and therefore have extensive applications in signal processing, sensing, and quantu…
Microwave Conductivity of Ferroelectric Domains and Domain Walls in Hexagonal Rare-earth Ferrite
Xiaoyu Wu, Kai Du, Lu Zheng +3
We report the nanoscale electrical imaging results in hexagonal single crystals using conductive atomic force microscopy (C-AFM) and scanning microwave impe…
Visualization of Surface-acoustic-wave Potential by Transmission-mode Microwave Impedance Microscopy
Lu Zheng, Di Wu, Xiaoyu Wu +1
Elastic waves propagating in piezoelectric materials are accompanied by a time-varying electric potential, which is of critical importance for acousto-electronic applications. The…
Interferometric Imaging of Nonlocal Electromechanical Power Transduction in Ferroelectric Domains
Lu Zheng, Hui Dong, Xiaoyu Wu +5
The electrical generation and detection of elastic waves are the foundation for acousto-electronic and acousto-optic systems. For surface-acoustic-wave devices, micro-/nano-electro…
Quantitative Measurements of Nanoscale Permittivity and Conductivity Using Tuning-fork-based Microwave Impedance Microscopy
Xiaoyu Wu, Zhenqi Hao, Di Wu +5
We report quantitative measurements of nanoscale permittivity and conductivity using tuning-fork (TF) based microwave impedance microscopy (MIM). The system is operated under the d…
Low-energy Structural Dynamics of Ferroelectric Domain Walls in Hexagonal Rare-earth Manganites
Xiaoyu Wu, Urko Petralanda, Lu Zheng +5
Domain walls (DWs) in ferroic materials, across which the order parameter abruptly changes its orientation, can host emergent properties that are absent in the bulk domains. Using…