Results 151 to 160 of about 109,685 (349)

Shaping Microbial Motion with Light: A Contactless Approach Using Diffusioosmotic Flow

open access: yesAdvanced Materials Interfaces, EarlyView.
Light‐controlled, contactless manipulation of cyanobacteria using photoresponsive azobenzene surfactants. Reversible photo‐isomerization generates surface flow, enabling precise trapping, relocation, and directional control of single cells or ensembles with adjustable light intensity and wavelength for noninvasive, spatiotemporally resolved microbial ...
Maren Umlandt   +5 more
wiley   +1 more source

Dynamic and Reconfigurable Acoustic Fields Enabled by Morphing Fluidic Holographic Lenses

open access: yesAdvanced Materials Technologies, EarlyView.
Real‐time reconfiguration of the acoustic field is achieved using fluidic holographic lenses that dynamically morph their structure via controlled volume changes. This compact, programmable approach eliminates the need for active elements like phased arrays, enabling high‐resolution, adaptive wavefront control with enhanced flexibility for diverse ...
Moustafa Sayed Ahmed, Shima Shahab
wiley   +1 more source

MEMS‐Based Magnetoelectric Antennas for Wireless Power Transmission in Brain‐Implantable Devices

open access: yesAdvanced Materials Technologies, EarlyView.
Magnetoelectric (ME) antennas allow the minimization of the invasiveness of brain implantable devices, via powering wirelessly systems able to actuate neural tissue. In order to achieve the necessary power efficiency transmission, the choice of the materials and the system assembly is vital.
Laura Mazón‐Maldonado   +5 more
wiley   +1 more source

Propofol attenuates responses of the auditory cortex to acoustic stimulation in a dose‐dependent manner: A FMRI study [PDF]

open access: green, 2005
M. Dueck   +11 more
openalex   +1 more source

Ultrasound‐Powered, Battery‐Free Implants via Triboelectric Energy Harvesting

open access: yesAdvanced Materials Technologies, EarlyView.
Ultrasound‐driven triboelectric nanogenerators (US‐TENGs) present a promising approach to battery‐free implants by combining body‐safe ultrasound with the material and structural versatility of TENGs. This review categorizes current US‐TENG research into long‐term and transient short‐term applications and discusses key challenges in materials, device ...
Youngwook Chung   +5 more
wiley   +1 more source

Stimulated Brillouin scattering from multi-GHz-guided acoustic phonons in nanostructured photonic crystal fibres [PDF]

open access: bronze, 2006
Paulo Dainese   +7 more
openalex   +1 more source

Advances in Optical Techniques for Tumor Detection

open access: yesAdvanced Optical Materials, EarlyView.
Cancer detection is vital for patient survival. Optical technologies overcome conventional cytology's limitations with high sensitivity and molecular specificity. This review highlights five techniques: Raman spectroscopy, fluorescence sensors, fiber optic sensors, photoacoustic imaging, and colorimetric detection for tumor diagnosis via direct ...
Yang Yu   +6 more
wiley   +1 more source

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