Methods and apparatus for transparent display using up-converting nanoparticles

Patent · Tue Oct 04 04:00:00 EDT 2016

OSTI ID:1327921

Hsu, Chia Wei; Qiu, Wenjun; Zhen, Bo; Shapira, Ofer; Soljacic, Marin

Disclosed herein are transparent color displays with nanoparticles made with nonlinear materials and/or designed to exhibit optical resonances. These nanoparticles are embedded in or hosted on a transparent substrate, such as a flexible piece of clear plastic or acrylic. Illuminating the nanoparticles with invisible light (e.g., infrared or ultraviolet light) causes them to emit visible light. For example, a rare-earth doped nanoparticle may emit visible light when illuminated simultaneoulsy with a first infrared beam at a first wavelength .lamda..sub.1 and a second infrared beam at a second wavelength .lamda..sub.2. And a frequency-doubling nanoparticle may emit visible light when illuminated with a single infrared beam at the nanoparticle's resonant frequency. Selectively addressing these nanoparticles with appropiately selected pump beams yields visible light emitted from the nanoparticles hosted by the transparent substrate in a desired pattern.

• Research Organization: Massachusetts Institute of Technology, Cambridge, MA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: SC0001299; SC0001299
• Assignee: Massachusetts Institute of Technology (Cambridge, MA
• Patent Number(s): 9,458,989
• Application Number: 14/143,558
• OSTI ID: 1327921
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
77 NANOSCIENCE AND NANOTECHNOLOGY