MICROSYSTEMS RESEARCH

Self-Cleaning Glass of Cognitive AI Sensors for Autonomous Driving

Schematic diagram of Self-Cleaning Glass (SCG) based on the electrowetting (EW) principle: (a) when liquid droplets are generated on the surfaces of cameras and sensors, the SCG makes them oscillate and simultaneously repelled from the surfaces; (b) the SCG actuation scheme.

Demonstration of Self-Cleaning Glass (SCG): Water droplets of different volumes on the lens cover are removed by EW actuation.

Electronic Liquid Shutter/Screen for Mobile Phones/Devices

Schematic diagram of an Electronic Liquid Screen (ELS) for the security and aesthetic design of mobile electronic devices: (a) perspective view; (b) cross-sectional views of the open and closed states of the liquid screen.

Demonstration of the Electronic Liquid Screen (ELS): The operation of the liquid screen is successfully demonstrated by concealing and revealing a camera built into a smartphone.

Electromagnetic Liquid Shutter for Mobile Phones/Devices

Schematic diagram of a tunable optical shutter operated by electromagnetic actuation: When an electric current is applied to a coil, the ferrofluid initially contained in the sub-channel of the shutter is electromagnetically actuated and pulled toward the center of the main channel, thereby changing the aperture of the shutter.

Electromagnetic Multifunctional Liquid Lens for Mobile Phones/Devices

Multifunctional liquid lens (MLL) based on electrowetting and electromagnetic actuation for variable optical functions such as focus, aperture, and zoom: (a) electromagnetic actuation; (b) varifocal operation.

Demonstration of the Multifunctional Liquid Lens (MLL): The operation of the Multifunctional Liquid Lens is demonstrated to evaluate the varifocal function of the lens unit.

Electrowetting Driven 3D Manipulation of Droplets

Schematics of 3D droplet manipulation between parallel plates consisting of patterned electrowetting electrode arrays: (a) conceptual 3D image; (b) 2D images of droplet motion.

Electromagnetically Driven Microrobot Swimming Inside the Human Body

Schematic diagram of micro-object manipulation in blood vessels using a microrobot incorporating an acoustically oscillating bubble: (a) test setup; (b1–b3) micro-object manipulation in human blood vessels using the designed microrobot.

Novel Propulsion for Submarines and Surface Vessels

Submarine propulsion scheme driven by cavitation microstreaming flow: (a) initial state; (b) the submarine moves to the left when the bubble at the rear side of the submarine is excited near its resonant frequency by a piezo-actuator attached to the bottom of the water chamber.

Transportation

Rotation

Maneuver

Acoustic Bubble Micromanipulator

Schematic diagram of the proposed electromagnetically driven on-chip micromanipulator: When a bubble at the tip of the micromanipulator is acoustically excited at its natural frequency by a piezo-actuator attached beneath the chip, it oscillates and generates an acoustic radiation force, known as the Bjerknes force, which pulls a neighboring object onto its surface, as shown in Fig. (b). The captured object can then be transported to any desired location by actuating the micromanipulator with an external magnetic controller consisting of a precisely controllable 2D traverse stage and twin permanent magnets, as shown in Fig. (c). Once the object carried by the micromanipulator reaches the target location, it can be released from the bubble simply by turning off the piezo-actuator and returning the micromanipulator to its original position, as shown in Fig. (d).

Magnetic-Field-Driven Liquid Metal Manipulation

Conceptual schematic of microfluidic-based, magnetic-field-driven manipulation of liquid metal: (a) coating with Fe particles; (b) HCl treatment and suction of the liquid metal; (c) injection of HCl-treated liquid metal into an HCl- or NaOH-filled PDMS-based microfluidic channel; and (d) on-demand magnetic manipulation of the HCl-treated liquid metal.

Page updated

Google Sites

Report abuse