Search Results - "Cummer, Steven"

Hunting for Gamma Rays above Thunderstorms: The ALOFT Campaign.

Authors: Lang, Timothy J. Østgaard, Nikolai Marisaldi, Martino et al.

Source: Bulletin of the American Meteorological Society; Aug2025, Vol. 106 Issue 8, pE1649-E1669, 21p

Measurements of Nighttime Ionospheric E and F Layers Using AM Radio Signals.

Authors: Jia, Yongze Pu, Yunjiao Cummer, Steven A.

Source: Journal of Geophysical Research. Space Physics; Jul2026, Vol. 131 Issue 7, p1-16, 16p

A transfer matrix approach for characterizing spherically symmetric acoustic metamaterials and structures.

Authors: Hernandez, Gregory M. Li, Junfei Cummer, Steven A.

Source: Journal of the Acoustical Society of America; May2026, Vol. 159 Issue 5, p4470-4481, 12p

A Case Study on the Vertical Distribution and Correlation Between Low-Frequency Lightning Sources and Hydrometeors During a Thunderstorm.

Authors: Jiang, Sulin Lyu, Fanchao Cummer, Steven A. et al.

Source: Remote Sensing. Aug2025, Vol. 17 Issue 15, p2676. 20p.

A systematic approach for synthesizing 3D-printable all-dielectric devices.

Authors: Passia, Maria-Thaleia Cummer, Steven A.

Source: Journal of Applied Physics; 12/7/2024, Vol. 136 Issue 21, p1-10, 10p

Observation of two-dimensional acoustic bound states in the continuum.

Authors: Martí-Sabaté, Marc Li, Junfei Djafari-Rouhani, Bahram et al.

Source: Communications Physics. 4/9/2024, Vol. 7 Issue 1, p1-8. 8p.

Ultra-broadband low-frequency high-efficiency acoustic energy harvesting with metamaterial-enhanced loudspeakers.

Authors: Peng, Xiuyuan Li, Junfei Cummer, Steven A.

Source: Applied Physics Letters; 8/14/2023, Vol. 123 Issue 7, p1-7, 7p

Dual band Vis-IR absorber using bismuth based helical metamaterial surface.

Authors: Agarwal, Sajal Srivastava, Gargi Prajapati, Yogendra Kumar

Source: Optical & Quantum Electronics. Nov2022, Vol. 54 Issue 11, p1-11. 11p.

Self-stabilizing three-dimensional particle manipulation via a single-transducer acoustic tweezer.

Authors: Shen, Lu Tai, Junfei Crivoi, Alexandru et al.

Source: Applied Physics Letters; 2/27/2023, Vol. 122 Issue 9, p1-5, 5p

Achromatic metasurfaces by dispersion customization for ultra-broadband acoustic beam engineering.

Authors: (董浩文), Hao-Wen Dong (沈宸), Chen Shen (赵胜东), Sheng-Dong Zhao et al.

Source: National Science Review; Dec2022, Vol. 9 Issue 12, p1-11, 11p

Diurnal Variations of the Electron Density in the Nighttime Lower Ionosphere Derived From a Massive Data Set of Tweek Atmospherics.

Authors: Zhang, Mao Lu, Gaopeng Wang, Ziyi et al.

Source: Earth & Space Science. Nov2025, Vol. 12 Issue 11, p1-12. 12p.

Electrically Tunable Surface Acoustic Wave Propagation at MHz Frequencies Based on Carbon Nanotube Thin-Film Transistors.

Authors: Shen, Chen Lu, Shiheng Tian, Zhenhua et al.

Source: Advanced Functional Materials; 5/3/2021, Vol. 31 Issue 18, p1-7, 7p

Lightning Initiation From Fast Negative Breakdown is Led by Positive Polarity Dominated Streamers.

Authors: Huang, Anjing Cummer, Steven A. Pu, Yunjiao

Source: Geophysical Research Letters. 4/28/2021, Vol. 48 Issue 8, p1-9. 9p.

Characterization of an underwater metamaterial made of aluminum honeycomb panels at low frequencies.

Authors: Cushing, Colby W. Wilson, Preston S. Haberman, Michael R. et al.

Source: Journal of the Acoustical Society of America; Mar2021, Vol. 149 Issue 3, p1829-1837, 9p

Efficient scattering-free wavefront transformation with power flow conformal bianisotropic acoustic metasurfaces.

Authors: Peng, Xiuyuan Li, Junfei Shen, Chen et al.

Source: Applied Physics Letters; 2/14/2021, Vol. 118 Issue 6, p1-5, 5p

Switchable directional sound emission with improved field confinement based on topological insulators.

Authors: Song, Ailing Li, Junfei Shen, Chen et al.

Source: Applied Physics Letters; 7/27/2020, Vol. 117 Issue 4, p1-5, 5p, 1 Color Photograph, 3 Graphs

A GPU-Based Grid Traverse Algorithm for Accelerating Lightning Geolocation Process.

Authors: Qin, Zilong Chen, Mingli Lyu, Fanchao et al.

Source: IEEE Transactions on Electromagnetic Compatibility; Apr2020, Vol. 62 Issue 2, p489-497, 9p

Non-reciprocal acoustic transmission via space-time modulated membranes.

Authors: Zhu, Xiaohui Li, Junfei Shen, Chen et al.

Source: Applied Physics Letters; 1/21/2020, Vol. 116 Issue 3, p1-5, 5p, 1 Diagram, 2 Graphs

NOWCAST NEWS AND NOTES.

Source: Bulletin of the American Meteorological Society. Nov2009, Vol. 90 Issue 11, p1593-1598. 5p.

An analysis of new and existing FDTD methods for isotropic cold plasma and a method for improving their accuracy.

Authors: Cummer, Steven A.

Source: IEEE Transactions on Antennas & Propagation; March 1997, Vol. 45, p392-400, 9p