University of California

James Friend

An Huang

Gopesh Tilvawala

Victor Nizet

Naiqing Zhang

Kenjiro Takemura

Yuta Kurashina

Jiyang Mei

William Connacher

Monika Kumaraswamy

Sean Collignon

Articles of manufacture, including an apparatus for omnidirectional spiral surface acoustic wave generation, are provided. An acoustic wave device that generates a plurality of acoustic wave includes a piezoelectric material to convert electric energy into the plurality of acoustic waves. The acoustic wave device also includes a transducer. The transducer includes a plurality of fingers arranged in a spiral formation. The plurality of acoustic waves induce acoustic streaming along the piezoelectric material in multiple directions to isolate a fluid component within a fluid located on the acoustic wave device.

Omnidirectional spiral surface acoustic wave generation

A dendrite resistant battery may include a first electrode, a second electrode, and an electrolyte interposed between the first electrode and the second electrode. The dendrite resistant battery may further include at least one acoustic wave device configured to generate a plurality of acoustic waves during a charging of the battery. The charging of the battery may trigger cations from the first electrode to travel through the electrolyte and deposit on the second electrode. The plurality of acoustic waves may agitate the electrolyte to at least homogenize a distribution of cations in the electrolyte. The homogenization of the distribution of cations may prevent a formation of dendrites on the second electrode by at least increasing a uniformity of the deposit of cations on the second electrode. Related methods and systems for battery management are also provided.

Acoustic wave based dendrite prevention for rechargeable batteries

Articles of manufacture, including an apparatus for acoustic wave based atomization, are provided. The apparatus may include a monocrystalline piezoelectric substrate. The monocrystalline piezoelectric substrate may include a surface patterned with at least one wetting region. The monocrystalline piezoelectric substrate may be configured to respond to an electric signal by at least generating acoustic waves including, for example, surface acoustic waves, Bluestein-Gulayev waves, Lamb waves, Love waves, flexural waves, thickness mode vibrations, mixed-mode waves, longitudinal waves, shear mode vibrations, and/or bulk wave vibrations. The acoustic waves may atomizing at least a portion of a material collected within the at least one wetting region to form a mist of the material. Methods for acoustic wave based atomization are also provided.

Acoustic wave atomizer

Articles of manufacture, including an apparatus for acoustic wave based agglomeration, are provided. The apparatus may include a well and an acoustic wave device. The well may be configured to hold a suspension that includes a plurality of particles. The acoustic wave device may be configured to generate a plurality of acoustic waves. The plurality of acoustic waves inducing acoustic streaming within the suspension. The acoustic streaming agitating the suspension to form an agglomerate comprising at least a portion of the plurality of particles. Methods for acoustic wave based agglomeration are also provided.

Acoustic wave based particle agglomeration

A hydraulically driven surgical apparatus may be a tube enclosing a first channel filled with a first fluid. Changing a fluid pressure in the first channel may trigger a deformation of the tube. The deformation of the tube may perform an action associated with a surgical procedure. Related methods for steering a hydraulically driven surgical apparatus are also provided.

Growing community of inventors

San Diego, CA, United States of America

James Friend