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Search Results - shu yang

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Method to enhance formation of nano-features in soft lithography
Technology Overview: Soft lithography uses a patterned elastomer polydimethylsiloxane (PDMS) as the stamp or mold to generate micro- and nano-patterns. This method is limited for features smaller than 100 nm, as the low modulus PDMS may deform and result in pattern collapse and rounded corners. Penn scientists have developed a novel method to form...
Published: 3/9/2020   |   Inventor(s): Shu Yang, Ying Zhang, Randall Kamien, James Kikkawa, Dinesh Chandra, Elisabetta Matsumoto
Keywords(s):  
Category(s): Research Tools & Reagents
Robust Smart Windows: Reversible Switching from Transparent to Color
Technology Overview: A composite film consisting of a thin layer of quasi-amorphous array of silica nanoparticles (NPs) is embedded in a bulk elastomeric polymer film. It is highly transparent (>90% transmittance in the visible wavelength) in the initial state. Upon mechanical stretching, the transmittance is dramatically reduced to 30% and...
Published: 1/31/2020   |   Inventor(s): Shu Yang
Keywords(s): Nanotechnology
Category(s): Energy & Infrastructure & Environment, Materials
Highly Stable Nematic Liquid Crystal Polymers for Optical, Actuator, and Sensing Applications
Technology Overview: Liquid crystals (LCs), owing to their anisotropy in molecular ordering, are of wide interest for applications such as sophisticated optical objects, sensors and actuators. To exploit the full potential of these nanoscale materials we need precise alignment of LC molecules on a substrate and the ability to image LC director field...
Published: 1/28/2020   |   Inventor(s): Shu Yang
Keywords(s): Optics & Photonics 
Category(s): Materials