Results 91 to 100 of about 22,235 (140)

Self‐Powered Frequency‐Selective Acoustic Sensor Based on Bound States in the Continuum

Advanced Science, Volume 12, Issue 15, April 17, 2025.
This innovative two‐state acoustic system leverages Friedrich–Wintgen bound states in the continuum to enhance local sound energy up to 1849 times the incident intensity, addressing the challenge of low energy density in acoustic energy harvesting. Its high quality factor and precise frequency selectivity demonstrate considerable potential to advance ...
Chao Song, Sibo Huang, Hongyu Ma, Shuhuan Xie, Din Ping Tsai, Jie Zhu, Yong Li   +6 more
wiley   +1 more source

Manufacturing Anti-Reflective Subwavelength Structures on ZnS Using Femtosecond Laser Bessel Beam with Burst Mode. [PDF]

Biomimetics (Basel)
Wang H, Li B, Hu L, Zhang F.
europepmc   +1 more source

Ultrafast All‐Optical Switching and Active Sub‐Cycle Waveform Control via Time‐Variant Photodoping of Terahertz Metasurfaces

Advanced Science, Volume 12, Issue 14, April 10, 2025.
This study introduces a novel time‐resolved spectroscopy approach enabling ultrafast terahertz (THz) modulation in silicon‐based optical switches. Utilizing photon‐induced processes, it achieves a record THz switching time of 1.3 ps and a modulation depth over 500%. The method demonstrates active sub‐cycle pulse control, offering a new pathway for high‐
Jeongmin Jang, Junsuk Rho, Hee Jun Shin
wiley   +1 more source

The Synthesis and Assembly Mechanism of Micro/Nano-Sized Polystyrene Spheres and Their Application in Subwavelength Structures. [PDF]

Micromachines (Basel)
Lee YC, Wu HK, Peng YZ, Chen WC.
europepmc   +1 more source

Broadband Acoustic Purcell Effect from Collective Bound States in the Continuum

Advanced Science, Volume 12, Issue 15, April 17, 2025.
This study introduces a novel six‐cavity system that utilizes collective quasibound states in the continuum (QBICs) to achieve a broadband acoustic Purcell effect. By strongly coupling five QBICs with an acoustic source within the introduced system, the research demonstrates a significant enhancement in sound emission from 625 to 900 Hz, paving the way
Sibo Huang, Shuhuan Xie, Tuo Liu, Tong Hao, Din Ping Tsai, Yong Li, Jie Zhu   +6 more
wiley   +1 more source

Quantum imaging with ultra-thin metasurfaces. [PDF]

Light Sci Appl
Lee J.
europepmc   +1 more source

Nanotweezers for Manipulating Untethered Micro/Nanoscale Bio‐Tools: Principles, Performance, and Highlighted Applications

Advanced NanoBiomed Research, Volume 5, Issue 4, April 2025.
This review focuses on optical, electric, and magnetic nanotweezers for manipulating single micro/nanoparticles as miniaturized biomedical tools. Representative historical and contemporary examples illustrate mechanisms, setups, performance, and applications.
Kelly Shih, Niam Zaidi, Seung Ho Lee, Huaizhi Li, Donglei Emma Fan   +4 more
wiley   +1 more source

Design of Real-Time Demodulation for FBG Sensing Signals Based on All-Dielectric Subwavelength Gratings Edge Filters. [PDF]

Nanomaterials (Basel)
Lin J, Tang P, Chen K, Xue J, Meng Z, Zhou J.   +5 more
europepmc   +1 more source

Dynamic Steerable Patterning of Microscale Particles and Living Cells Using an Ultrasound‐Phased Array

Advanced NanoBiomed Research, Volume 5, Issue 4, April 2025.
Ultrasound transducers can be used to pattern microscale particles. Herein, it is shown that dynamic patterning, i.e., varying pattern location and direction using transmit beamforming, can be achieved using a (clinical)‐phased array transducer without the need for a reflector. Moreover, initial acoustic patterning results on living cells are presented,
Rick J. P. van Bergen, Bart G. W. Groenen, Daniëlle C. A. Duffhues, Richard G. P. Lopata, Carlijn V. C. Bouten, Hans‐Martin Schwab   +5 more
wiley   +1 more source

Effects of gradual deformation of identical and nonidentical, rotated and nonrotated U-shaped subwavelength resonators in few-layer metasurfaces. [PDF]

Sci Rep
Serebryannikov AE, Cakmak AO, Colak E.
europepmc   +1 more source