Results 61 to 70 of about 2,725 (194)

Miniature Robotic Swimmer with Precise 2D Motion Control via Acoustic Vortex‐Induced Propulsion

open access: yesAdvanced Science, Volume 13, Issue 12, 27 February 2026.
In this work, a miniature robotic swimmer achieves precise 2D motion using sound waves with customized 3D‐printed lenses. Localized acoustic vortices drive both translation and rotation of the swimmer without mechanical parts. This contactless approach offers a novel route to controlled micro‐scale movement, with promising applications in biomedical ...
Chadi Ellouzi   +6 more
wiley   +1 more source

Solidly Mounted Resonators with Carbon Nanotube Electrodes for Biosensing Applications [PDF]

open access: yes, 2011
The work reported here shows a direct experimental comparison of the sensitivities of AlN solidly mounted resonators (SMR)-based biosensors fabricated with standard metal electrodes and with carbon nanotube electrodes.
,   +13 more
core   +2 more sources

Multiscale Construction, Evaluation, and Application of Organoids

open access: yesAdvanced Science, Volume 12, Issue 47, December 18, 2025.
Organoids are pivotal models with transformative biomedical potential. A comprehensive multi‐scale perspective is presented, encompassing dual‐scale construction, four‐dimensional evaluation, triple‐point application, and an analysis of the current challenges faced by organoid technology, aiming to advance organoid research and its biomedical ...
Wanting Ma   +5 more
wiley   +1 more source

Extremely Low-Loss Acoustic Phonons in a Quartz Bulk Acoustic Wave Resonator at Millikelvin Temperature

open access: yes, 2012
Low-loss, high frequency acoustic resonators cooled to millikelvin temperatures are a topic of great interest for application to hybrid quantum systems.
Bourquin, Roger   +5 more
core   +5 more sources

High-frequency, resonant acousto-optic modulators fabricated in a MEMS foundry platform [PDF]

open access: yes, 2019
We report the design and characterization of high frequency, resonant acousto-optic modulators (AOM) in a MEMS foundry process. The doubly-resonant cavity design, with short ($L{\sim}10.5\, {\mu}m$) acoustic and optical cavity lengths, allows us to ...
Balram, Korpel, Tadesse
core   +5 more sources

Graphene as an active virtually massless top electrode for RF solidly mounted bulk acoustic wave (SMR-BAW) resonators [PDF]

open access: yesNanotechnology, 2018
Mechanical and electrical losses induced by an electrode material greatly influence the performance of bulk acoustic wave (BAW) resonators. Graphene as a conducting and virtually massless 2D material is a suitable candidate as an alternative electrode material for BAW resonators which reduces electrode induced mechanical losses.
Marius Knapp   +4 more
openaire   +3 more sources

Fabrication of Bulk Acoustic Wave Resonator with Multilayer Graphene Electrode

open access: yesphysica status solidi (b), Volume 262, Issue 12, December 2025.
Herein, multilayer graphene structures are grown on the silicon substrate for the fabrication of the bulk acoustic wave resonator device. The result reveals that both methods can be used to replace the Bragg reflector. Two bulk acoustic wave resonator (BAW) devices with multilayer graphene as bottom electrodes are fabricated using the chemical vapor ...
Yuxuan Wang   +3 more
wiley   +1 more source

Rapid Nucleic Acid Extraction and Purification Using a Miniature Ultrasonic Technique

open access: yesMicromachines, 2017
Miniature ultrasonic lysis for biological sample preparation is a promising technique for efficient and rapid extraction of nucleic acids and proteins from a wide variety of biological sources.
Darren W. Branch   +5 more
doaj   +1 more source

High-Acoustic-Impedance Tantalum Oxide Layers for Insulating Acoustic Reflectors [PDF]

open access: yes, 2012
This work describes the assessment of the acoustic properties of sputtered tantalum oxide films intended for use as high-impedance films of acoustic reflectors for solidly mounted resonators operating in the gigahertz frequency range.
Capilla Osorio, José   +5 more
core   +2 more sources

Agglomeration of particles by a converging ultrasound field and their quantitative assessments

open access: yesUltrasonics Sonochemistry, 2021
The acoustic radiation force resulting from acoustic waves have been extensively studied for the contact-free generation of organized patterning arrays.
Tianquan Tang, Bin Dong, Lixi Huang
doaj   +1 more source

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