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Soft Lithography07:53

Soft Lithography

Many BioMEM devices, such as microfluidic channels, are fabricated using the soft lithography technique. Here, a microscale pattern is replicated by curing an elastomeric polymer over the 3D structure. These polymeric structures are then used to create a wide range of devices, ranging from microfluidic channels for biosensing applications to microscale bioreactors for the visualization of micro-colonies.
This video introduces photolithography and demonstrates the technique in the...
11.9K
Bioinspired Soft Robot with Incorporated Microelectrodes08:24

Bioinspired Soft Robot with Incorporated Microelectrodes

A bioinspired scaffold is fabricated by a soft photolithography technique using mechanically robust and electrically conductive hydrogels. The micropatterned hydrogels provide directional cardiomyocyte cell alignment, resulting in a tailored direction of actuation. Flexible microelectrodes are also integrated into the scaffold to bring electrical controllability for a self-actuating cardiac...
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Rapid Manufacturing of Thin Soft Pneumatic Actuators and Robots08:47

Rapid Manufacturing of Thin Soft Pneumatic Actuators and Robots

This protocol describes a method for rapid manufacturing of soft pneumatic actuators and robots with a thin form factor. The fabrication method starts with lamination of thermoplastic polyurethane (TPU) sheets followed by laser cutting/welding of a two-dimensional pattern to form actuators and...
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Combining Microfluidics and Microrheology to Determine Rheological Properties of Soft Matter during Repeated Phase Transitions11:38

Combining Microfluidics and Microrheology to Determine Rheological Properties of Soft Matter during Repeated Phase Transitions

We demonstrate the fabrication and use of a microfluidic device that enables multiple particle tracking microrheology measurements to study the rheological effects of repeated phase transitions on soft...
8.4K
Ultrasonic Welding of Thermoplastic Composite Coupons for Mechanical Characterization of Welded Joints through Single Lap Shear Testing08:40

Ultrasonic Welding of Thermoplastic Composite Coupons for Mechanical Characterization of Welded Joints through Single Lap Shear Testing

A straightforward procedure for ultrasonic welding of thermoplastic composite coupons for basic mechanical testing is described. Key characteristics of this ultrasonic welding process are the use of flat energy directors for simplified process preparation and the use of process data for the fast definition of optimum processing...
12.0K
Fabrication of the Thermoplastic Microfluidic Channels16:00

Fabrication of the Thermoplastic Microfluidic Channels

Here we demonstrate how to fabricate thermoplastic microfluidic chips using hot embossing and heat sealing. Then we demonstrate how to use in situ light directed surface grafting and polymerization through the sealed chip to form the composite solid phase...
13.8K