Transfer printing of inorganic semiconductors is a key technology to realize next-generation human augmented optoelectronics. Prof. Lee’s group has developed a novel micro-vacuum assisted selective transfer (μVAST) process to integrate inorganic thin-film semiconductor arrays on unconventional substrates for high-performance flexible optoelectronics.
Light is a powerful medium to increase cognitive and physical abilities of human bodies by expanding human vision and tissue functionalities. Prof. Lee’s group has developed 2D/3D microfabrication and microLEDs transfer technology to implement see-through/head-up microLED displays, light-induced neural modulators and therapeutic light stimulators.
- Flexible inorganic microLED fabrication
- We have developed microfabrication technology (e.g. laser lift-off, ACF, and monolithic transfer) to implement flexible/high-resolution (~10 µm) microLED-based photonic devices for full-color AR/VR displays and optogenetic bio-applications.
- MicroLED Transfer technology
- We have developed a novel vacuum-assisted transfer technology to entirely/selectively move massive amounts of microLEDs to the targeted substrates. This transfer technology enables microLED integration with oxide TFTs or auxetic substrates for head-up display and distortion-free stretchable display.
- 2D/3D architectural soft photonic devices
- We have developed 2D/3D deformable microLED devices to achieve mechanical compliance with human body such as skin, brain and organs. Bio-conformable microLED devices assist or enhance bio-functionalities of tissues enabling treatment of various disease including alopecia, hyperpigmentation, cancer, and neural disorders.
[Related References]
"Bio-Integrated Flexible Inorganic LED", Nanobiosensors in Disease Diagnosis, 1, 5, 2012
"Water-resistant Flexible GaN LED on a Liquid Crystal Polymer Substrate for Implantable Biomedical Applications", Nano Energy, 1, 145, 2012
"Self-powered Fully-Flexible Light Emitting Systems enabled by Flexible Energy Harvester", Energy Environ. Sci., 7(12), 4035, 2014
"Optogenetic Mapping of Functional Connectivity in Freely Moving Mice via iWEBS" ACS Nano,10, 2791, 2016
"Optogenetic Control of Body Movements via Flexible Vertical Light-Emitting Diodes on Brain Surface", Nano Energy, 44, 447, 2018
"Monolithic Flexible Vertical GaN Light-Emitting Diodes for Transparent Wireless Brain Optical Stimulator", Adv. Mater. 30, 1800649, 2018
"Trichogenic Photostimulation Using Monolithic Flexible Vertical AlGaInP Light-Emitting Diodes", ACS Nano, 12, 9587, 2018
"Progress in Brain-Compatible Interfaces with Soft Nanomaterials ", Advanced Materials, 32, 1907522, 2020
“Flash-Induced Robust CU Electrode on Glass Substrates and its Application for Thin-Film µLED.”, Adv. Mater., 33. 2007186. 2021
“Wearable Surface-Lighting Micro-Light-Emitting Diode Patch for Melanogenesis Inhibition.”, Adv. Healthcare Mater., 12, 2201796. 2023
Transfer printing of inorganic semiconductors is a key technology to realize next-generation human augmented optoelectronics. Prof. Lee’s group has developed a novel micro-vacuum assisted selective transfer (μVAST) process to integrate inorganic thin-film semiconductor arrays on unconventional substrates for high-performance flexible optoelectronics.Light is a powerful medium to increase cognitive and physical abilities of human bodies by expanding human vision and tissue functionalities. Prof. Lee’s group has developed 2D/3D microfabrication and microLEDs transfer technology to implement see-through/head-up microLED displays, light-induced neural modulators and therapeutic light stimulators.
[Related References]
"Bio-Integrated Flexible Inorganic LED", Nanobiosensors in Disease Diagnosis, 1, 5, 2012
"Water-resistant Flexible GaN LED on a Liquid Crystal Polymer Substrate for Implantable Biomedical Applications", Nano Energy, 1, 145, 2012
"Self-powered Fully-Flexible Light Emitting Systems enabled by Flexible Energy Harvester", Energy Environ. Sci., 7(12), 4035, 2014
"Optogenetic Mapping of Functional Connectivity in Freely Moving Mice via iWEBS" ACS Nano,10, 2791, 2016
"Optogenetic Control of Body Movements via Flexible Vertical Light-Emitting Diodes on Brain Surface", Nano Energy, 44, 447, 2018
"Monolithic Flexible Vertical GaN Light-Emitting Diodes for Transparent Wireless Brain Optical Stimulator", Adv. Mater. 30, 1800649, 2018
"Trichogenic Photostimulation Using Monolithic Flexible Vertical AlGaInP Light-Emitting Diodes", ACS Nano, 12, 9587, 2018
"Progress in Brain-Compatible Interfaces with Soft Nanomaterials ", Advanced Materials, 32, 1907522, 2020
“Flash-Induced Robust CU Electrode on Glass Substrates and its Application for Thin-Film µLED.”, Adv. Mater., 33. 2007186. 2021
“Wearable Surface-Lighting Micro-Light-Emitting Diode Patch for Melanogenesis Inhibition.”, Adv. Healthcare Mater., 12, 2201796. 2023