USA as Represented by Secretary of the Navy

University of Illinois

X-Celeprint Limited

Semprius, Inc.

Alfred J Baca

William Lai

Ralph G Nuzzo

Jongseung Yoon

John A Rogers

Matthew Alexander Meitl

Etienne Menard

Heung Cho Ko

Mark Stoykovich

Jong-Hyun Ahn

Michael Motala

Chang-Jae Yu

Sang-Il Park

Heather A Meylemans

M Joseph Roberts

Lawrence Baldwin

John D Stenger-Smith

Lee Cambrea

Michael T Owens

Benjamin G Harvey

Angus A Rockett

Andrew P Chafin

Stephen Fallis

Peter Zarras

Heung-Cho Ko

Sang-II Park

Provided are optical devices and systems fabricated, at least in part, via printing-based assembly and integration of device components. In specific embodiments the present invention provides light emitting systems, light collecting systems, light sensing systems and photovoltaic systems comprising printable semiconductor elements, including large area, high performance macroelectronic devices. Optical systems of the present invention comprise semiconductor elements assembled, organized and/or integrated with other device components via printing techniques that exhibit performance characteristics and functionality comparable to single crystalline semiconductor based devices fabricated using conventional high temperature processing methods. Optical systems of the present invention have device geometries and configurations, such as form factors, component densities, and component positions, accessed by printing that provide a range of useful device functionalities. Optical systems of the present invention include devices and device arrays exhibiting a range of useful physical and mechanical properties including flexibility, shapeability, conformability and stretchablity.

Optical systems fabricated by printing-based assembly

A method for making a nanostructure includes preparing a perovskite precursor in a solvent where the perovskite concentration ranges from about 0.5M to about 1.5M. A substrate is coated in the perovskite precursor, and the perovskite precursor is annealed onto the substrate, thereby forming the nanostructure including the substrate with perovskite nanocrystal deposits.

Perovskite nanocrystal deposits

The synthesis of AgInSbased quantum dots and their use as fluorometric probes for the selective detection of nitroaromatic explosive chemicals, without the use of ligands specific to nitroaromatic explosive chemicals. These quantum dots allow the detection of nitroaromatic explosive molecules by eye. The present invention also represents a simple patterning method for quantum dots on substrates, including low cost filter paper. The ease of fabrication, use of less toxic materials, and the selectivity to nitroaromatic explosive chemicals results in a practical solution to the development of a portable fluorescent probe based on quantum dots for the detection of nitroaromatic explosive chemicals.

Metal chalcogenide quantum dots for the detection of nitroaromatic chemicals

A testing element, and methods of use therefor, for the detection of target analytes, for example metal ions and other environmental hazards, utilizing ligand functionalized fluorescent nanoparticles on a substrate. The non-toxic, air, and water stable fluorescent nanoparticles of the present invention are made from varying ratios of metals including zinc, silver, copper, and indium and sulfur. By varying the ratios of these metals nanoparticles can be synthesized that emit over a large range of the visible spectrum. Charge transfer between a target analyte and the nanoparticle is readily identified by a fluorescence change allowing for a fast, simple, visual detection system without the need for expensive analytical instrumentation. The test element can have more than one type of functionalized fluorescent nanoparticle which allows for the detection of multiple target analytes using a single test element.

Fluorescent nanoparticle test strips for heavy metal detection

An apparatus and method for the uniform dispersion of nano scaled redox particles in a conductive fiber including, combining at least one nano sized redox capable material having metal oxides and/or metals, at least one conductive binder, and at least one solvent to form electrically conductive metal imbedded fiber(s) by fiber spinning and the conductive polymeric binder having a molecular weight greater than 20,000 Daltons, and coating a substrate with the electrically conductive fiber(s) to form an active layer substrate complex having a conductivity greater than 0.05 S/cm.

High surface area nano fibers for supercapacitor devices

A material that can be used either as a standalone or coating additive that would both repel water and resist corrosion would greatly benefit the Navy. A method of making hydrophobic polymer, including combining a perylene derived monomer with a bisphenol derived monomer to produce a polymer mixture, and condensing said polymer mixture to produce a hydrophobic polymer.

Hydrophobic polymer for water proofing, anti-corrosion, and anti-fouling applications

An apparatus and method for the uniform dispersion of nano scaled redox particles in a conductive fiber including, combining at least one nano sized redox capable material having metal oxides and/or metals, at least one conductive binder, and at least one solvent to form electrically conductive metal imbedded fiber(s) by fiber spinning and the conductive polymeric binder having a molecular weight greater than 20,000 Daltons, and coating a substrate with the electrically conductive fiber(s) to form an active layer/substrate complex having a conductivity greater than 0.05 S/cm.

A method for making electronic devices based on derivatized ladder polymer (Pz-BBL) including photovoltaic modules and simple thin film transistors in planar and mechanically flexible and stretchable constructs.

Tetraamino pyrazine based ladder polymer for electroactive applications

A method for making electronic devices based on derivatized ladder polymer poly(benzo-isimidazobenzophenanthroline) (BBL) including photovoltaic modules and simple thin film transistors in planar and mechanically flexible and stretchable constructs.

Thin-film electro devices based on derivatized poly (benzo-isimidazobenzophenanthroline) ladder polymers

A wholly organic coating consisting of one or more layers of Py-BBL that is transparent in the IR region of the spectrum which is also thermally and oxdatively stable. This is coated onto IR transparent windows, domes and or optical lenses, for enhanced IR and signal filtering.

Growing community of inventors

Ridgecrest, CA, United States of America

Alfred J Baca