180 citations · 402 across the 9 of their papers we have counts for
9 papers
Klein Tunneling of Gigahertz Elastic Waves in Nanoelectromechanical Metamaterials
Daehun Lee, Yue Jiang, Xiaoru Zhang +5
Klein tunneling, the perfect transmission of a normally incident relativistic particle through an energy barrier, has been tested in various electronic, photonic, and phononic syst…
Nanoscale Imaging of Super-High-Frequency Microelectromechanical Resonators with Femtometer Sensitivity
Daehun Lee, Shahin Jahanbani, Jack Kramer +2
Implementing microelectromechanical system (MEMS) resonators calls for detailed microscopic understanding of the devices, such as energy dissipation channels, spurious modes, and i…
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…
Nonvolatile Electric-Field Control of Inversion Symmetry
Lucas Caretta, Yu-Tsun Shao, Jia Yu +20
In condensed-matter systems, competition between ground states at phase boundaries can lead to significant changes in material properties under external stimuli, particularly when…
Visualization of Acoustic Power Flow in Suspended Thin-film Lithium Niobate Phononic Devices
Daehun Lee, Shawn Meyer, Songbin Gong +2
We report direct visualization of gigahertz-frequency acoustic waves in lithium niobate phononic circuits. Primary propagation parameters, such as the power flow angle (PFA) and pr…
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…
Electrical Control of Surface Acoustic Waves
Linbo Shao, Di Zhu, Marco Colangelo +7
Acoustic waves at microwave frequencies have been widely used in wireless communication and recently emerged as versatile information carriers in quantum applications. However, mos…
Phonon Renormalization in Reconstructed MoS Moiré Superlattices
Jiamin Quan, Lukas Linhart, Miao-Ling Lin +15
In moiré crystals formed by stacking van der Waals (vdW) materials, surprisingly diverse correlated electronic phases and optical properties can be realized by a subtle change in t…
Material design with the van der Waals stacking of bismuth-halide chains realizing a higher-order topological insulator
Ryo Noguchi, Masaru Kobayashi, Zhanzhi Jiang +28
The van der Waals (vdW) materials with low dimensions have been extensively studied as a platform to generate exotic quantum properties. Advancing this view, a great deal of attent…