Results 61 to 70 of about 257,469 (274)
Holographic imaging of cylindrical ultrasonic waves
Archives of Acoustics, 2014 This report is devoted to the visualisation of standing cylindrical ultrasonic wave, generated by a radially vibrating piezoelectric shell, by means of time-average holographic interferometry. The theoretical basis of this technique was introduced, and
L. Grulkowski, D. Jankowski, P. Kwiek
doaj
The Geometry of Layer 2/3 Cortical Sound Processing in Slow Wave Sleep
Advanced Science, EarlyView.Sleep is associated with a sensory disconnection whose mechanisms remain elusive. Large neuronal population recordings in the auditory cortex revealed that, in NREM sleep, the neural code for sounds is highly similar to wakefulness, but coordinated modulations of neuron responsiveness intermittently disconnect the local cortical networks from sensory ...
Allan Muller +3 more
wiley +1 more source
Archives of Acoustics, 2013 The 11th School on Acousto-optics and its Appli- cations was held during the ICU’2011 – Interna- tional Congress on Ultrasonics’2011, Gdansk, Poland, 5–8 September 2011, incorporated within the Congress as one of the six structured sessions named as
B. B. J. LINDE, A. ŚLIWIŃSKI
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Piezoelectric‐Metal Phononic Crystal Enabling GHz Tunable Ultrahigh Q Quasi‐BIC Mode
Advanced Science, EarlyView.This study introduces a piezoelectric–metal phononic crystal design based on suspended LiNbO3 thin film that realizes quasi‐BIC resonance. The device achieves GHz operation with an ultrahigh quality factor (≈6.5 × 104) and efficient electrical tunability at low voltage.
Xuankai Xu +6 more
wiley +1 more source
Active Force Dynamics in Red Blood Cells Under Non‐Invasive Optical Tweezers
Advanced Science, EarlyView.A non‐invasive method combines low‐power optical tweezers with high‐speed microscopy to simultaneously monitor local membrane forces and displacements in single human red blood cells. This dual‐channel approach reveals a mechano‐dynamic signature that correlates the cell's metabolic state with its mechanical activity. This energetic framework serves as
Arnau Dorn +5 more
wiley +1 more source
Archives of Acoustics, 2014 1. 2-nd meeting on Advances in Acousto-Optics, St. Petersburg, Russia, June 24-25, 1997; 2. WORLD CONGRESS ON ULTRASONICS'97, Jokohama, Japan, 24-27 August 1997; 3. 103rd AES Convention, New York, 26-29 September 1997; 4.
Editorial Board Archives of Acoustics
doaj +2 more sources
Enhanced Sensitivity of Silicon-Photonics-Based Ultrasound Detection via BCB Coating
IEEE Photonics Journal, 2019 Ultrasound detection via silicon waveguides relies on the ability of acoustic waves to modulate the effective refractive index of the guided modes. However, the low photo-elastic response of silicon and silica limits the sensitivity of conventional ...
Resmi Ravi Kumar +5 more
doaj +1 more source
Multi‐Soliton Microcombs Enable Ultrafast Nanometric‐Precision Ranging and Photon‐Level Detection
Advanced Science, EarlyView.Our work first demonstrates dual‐multi‐soliton ranging and confirms its multifunctional capability. The method achieves ultrafast and nanometric‐precision measurement. For practical applications, we further extend the multi‐soliton states to photon‐level ranging.
Jiawen Zhi +10 more
wiley +1 more source
Acousto-Optics and Photoacoustics (AOPA) Conference of COO-SPIE Congress
Archives of Acoustics, 2014 Warsaw, 28 August - 2 September, 2005 The AOPA (Acousto-Optics and Photo-Acoustics) conference was one of the 14 topical conferences consisting of the International Congress of SPIE (The International Society for Optical Engineering) on Optics and ...
Antoni Śliwiński
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Controlled lasing from active optomechanical resonators [PDF]
, 2014 Planar microcavities with distributed Bragg reflectors (DBRs) host, besides confined optical modes, also mechanical resonances due to stop bands in the phonon dispersion relation of the DBRs.
Akimov, A. V. +10 more
core +3 more sources