Xerox Corporation

Palo Alto Research Center Inc.

Massachusetts Institute of Technology

Palo Alto Research Center Incoporated

Mahati Chintapalli

Gabriel Iftime

Quentin Van Overmeere

Stephen Matthew Meckler

Jessica Louis Baker Rivest

Eli Bulger

Barkev Keoshkerian

Ravi Neelakantan

Sean Emerson Doris

Eric Cocker

Kathryn F Murphy

Rahul Pandey

Warren Bruce Jackson

David Mathew Johnson

Eugene S Beh

Junhua Wei

Elif Karatay

Eugene Shin Ming Beh

Jerome Unidad

Mary Louie

Crystal Pham

Alec Ho

David Kalman Biegelsen

Francisco Eduardo Torres

George Amos Gibson

Ashish V Pattekar

James F Bredt

Sean Roark Garner

Divyaraj Desai

Anne Plochowietz

Jacob N Chamoun

Antonio L Williams

Michael J Tarkanian

Antonio Williams

Vedhasri Vedharathinam

An electrochemical device comprises a first type of membrane disposed between first and second reservoirs containing an input solution, and a second type of membrane, different from the first type, is disposed between a first redox-active electrolyte chamber and the first reservoir and disposed between a second redox-active electrolyte chamber and the second reservoir. The first type of membrane and one of the second type of membranes form a membrane pair and the pair has an area specific resistance below y=5065.3x−1331.1x+90.035x+39 Ohm cmwhen the pair is equilibrated in an electrolyte and for at least part of a range where 0<x<0.4 and x is the mass fraction of salt in the electrolyte.

Electrochemical device with efficient ion exchange membranes

A system and method utilize one or more fans each having fan blades. The fan blades have a desiccant material on an outer surface. The desiccant material is operable to adsorb airborne moisture in an ambient airflow and desorb moisture in a heated airflow. The fan blades are operable to drive one or both of the ambient airflow and heated airflow via rotation of the fan.

Desiccant coated fan blade

A method of forming a colorimetric sensor includes depositing a first material onto a substrate, providing porous sensing particles, wherein the sensing particles comprise sensing species dispersed into a porous host structure, and embedding the porous sensing particles onto a surface of the deposited first material, the first material attaching the sensing particles to the substrate with at least a portion of the sensing particles is exposed to an ambient environment.

Printed sensor with vibrant colorimetric particles

A method and system for stress engineering of a transparent material can include an imaging system that can visualize a spatial distribution of an internal stress in a transparent material, an actuator system that can induce stress in the transparent material, the actuator system comprising one or more actuator elements, and a feedback system that can communicate with the imaging system and the actuator system, and which can guide an internal stress distribution in the transparent material toward a preferred final state.

Stress engineering of transparent materials

A primary amine polymer aerogel comprising greater than 5 wt. % of primary amine monomers covalently bound to cross-linking monomers, wherein the primary amine monomers are selected from vinyl amine. A secondary amine polymer aerogel comprising secondary amine monomers covalently bound to cross-linking monomers, the secondary amine monomers being a result of substituting a hydrogen atom from a primary amine polymer aerogel, the primary amine polymer aerogel comprising vinyl amine monomers covalently bound to the cross-linking monomers. A tertiary amine polymer aerogel comprising tertiary amine monomers covalently bound to cross-linking monomers, the tertiary amine monomers being a result of substituting hydrogen atoms from a primary amine polymer aerogel, the primary amine polymer aerogel comprising vinyl amine monomers covalently bound to the cross-linking monomers.

Tunable, rapid uptake, aminopolymer aerogel sorbent for direct air capture of CO

A 3D printing system and methods to selectively pattern dense feedstock based on selective inhibition sintering (SIS). A sintering selectivity agent (inhibitor or promoter) is selectively deposited on a build layer according to the pattern boundary. When the layers are built-up and the part is sintered, the inhibited region remains unbound, thus defining the edge of the part. The material contain powder embedded in cohesive binder that make the adjacent layer adhere together. The build process involves forming the sheets of dense feedstock embedded binder, followed by depositing ink to promote selective sintering onto the layer. Once the build is complete, the process continues with the binder removal, sintering and finishing processes.

System and method for high throughput additive manufacturing of sintered parts with low anisotropy

A membraneless electrochemical device comprises a fluid feed stream input to the membraneless electrochemical cell, a first electrode, and a second electrode. The first electrode comprises a first redox-active material configured to have a proton-coupled oxidation reaction with a first portion of the fluid feed stream, and the second electrode comprises a second redox-active material configured to have a proton-coupled reduction reaction with a second portion of the fluid feed stream. The first portion and the second portion of the fluid feed stream are separated. A first effluent stream comprises the first portion and has a first pH, and a second effluent stream comprises the second portion and has a second pH, different from the first pH.

Electrochemical device for creation of pH gradients

A polymer electrolyte membrane includes an ion-conducting polymeric electrolyte material and platelets, distributed through the polymeric electrolyte material. The platelets have an aspect ratio of length to thickness of at least 2:1. The platelets are aligned generally parallel to a length of the membrane. The platelets can be functionalized with free radical scavengers, or other moieties, to extend the lifetime of the membrane or of a membrane electrode assembly incorporating the membrane.

Polymer electrolyte membrane with platelets

A method of manufacturing includes producing a powder resin comprising a polymer precursor and a thermal initiator, packing a fiber structure with the powder resin, resulting in a resin-packed structure, and heating the resin-packed structure to a curing temperature high enough to melt and cure the resin-packed structure to form a final structure.

Fast fabrication of fiber reinforced polymers using solid epoxy powder containing an initiator

A method of producing a polymer aerogel includes dissolving precursors into a solvent, wherein the precursors include monomers, crosslinkers, a controlling agent and an initiator to form a precursor solution, wherein at least one of the monomers or at least one of the crosslinkers has a refractive index of 1.5 or lower, polymerizing the precursor solution to form a gel polymer, and removing the solvent from the gel polymer to produce the polymer aerogel. A method of producing a polymer aerogel include dissolving precursors into a solvent, wherein the precursors include monomers, crosslinkers, a controlling agent and an initiator to form a precursor solution, polymerizing the precursor solution to form a gel polymer, removing the solvent from the gel polymer to produce the polymer aerogel, and reducing a refractive index of one of either the gel polymer or the polymer aerogel.

High optical transparency polymer aerogels using low refractive index monomers

A gas separation system has system input inlet configured to receive a stream mixture including a target gas, one or more spray generators positioned to spray a non-sprayable liquid to change a concentration of the target gas in the non-sprayable liquid, one or more system outlets positioned to outlet an output material, wherein at least one of the system outlets outputs a material having a lower amount of the target gas than the input stream mixture, and a recirculating path connected to the one or more outputs and the input inlet to allow recirculation of the non-sprayable liquid. A method of performing gas separation includes absorbing a target gas from an input stream in a non-sprayable capture liquid, and releasing the target gas in an output gas stream by spraying the non-sprayable capture liquid into a heated volume using a spray generator. A method of performing gas separation includes receiving an input stream that includes a target gas, using one or more spray generators to apply a non-sprayable liquid as a spray to the input stream to change a concentration of the target gas in the liquid, and outputting the liquid with the changed concentration through an outlet.

System and method to separate gases using high viscosity liquid sorbents in a spray contactor

A dried polymer aerogel has a Brunauer-Emmett Teller (BET) surface area over 100 m2/g, porosity of greater than 10%, visible transparency greater than 20%, color rendering index of over 20%, and average pore size of less than 100 nm.

Method to produce colorless, high porosity, transparent polymer aerogels

A colorimetric sensor has a first material deposited on a surface, and sensing particles on a surface of the first material, wherein the sensing particles comprise sensing species dispersed into porous host structures, such that at least a portion of the sensing particles is exposed to an ambient environment, wherein the first material attaches the sensing particles to surface. A method of forming a colorimetric sensor including depositing a first material onto a substrate, providing porous sensing particles, wherein the sensing particles comprise sensing species dispersed into a porous host structure, and embedding the porous sensing particles onto a surface of the deposited first material, wherein the first material attaches the sensing particles to the substrate such that at least a portion of the sensing particles is exposed to an ambient environment.

A porous polymer aerogel, wherein the aerogel has greater than 5 wt % of amine containing vinyl monomers integrated into a polymer backbone. A method of fabrication of a porous polymer aerogel amine material, includes preparing a solution comprising at least a solvent, amine monomers having protected amino groups, one or more crosslinkers, one or more radical initiators, and a nitroxide mediator, removing oxygen from the solution, heating the solution to promote polymerization and to produce a polymerized material, performing solvent exchange with the polymerized material, causing a deprotection reaction in the polymerized material to remove groups protecting the amino groups, soaking and rinsing the material to remove excess reagents and any byproducts of the deprotection reaction, and drying the material to produce the amine sorbent. A system to separate CO2 from other gases, comprising a polymer porous aerogel sorbent having greater than 5 wt % of amine containing vinyl monomers integrated into a polymer backbone.

A method of storing digital data in non-biological sequence-controlled polymers includes converting a digital data file into a monomer sequence, synthesizing polymer chains according to the monomer sequence, and encapsulating the polymer chains into microfluidic droplets and providing the microfluidic droplets with addresses. A polymer data storage system has a first converter to convert digital data to a polymer sequence, a polymer synthesizer to produce polymer chains according to a pre-determined monomer sequence, a fluidic encapsulation system to encapsulate the polymer chains in microfluidic droplets and to apply addressing materials to the microfluidic droplets, a storage for storing the microfluidic droplets, a droplet sorting system having at least an actuator to sort the droplets, a sequencer to derive the polymer sequence from the polymer chains contained in the droplets, and a second converter to convert the polymer sequence to digital data. A composition of matter wherein polymer chains comprising alternating segments of flexible linkers and one or more rigid monomer blocks, and wherein the rigid blocks are defined in a meaningful manner to store in a sequence in the polymer chain that represents digital data.

Growing community of inventors

Mountain View, CA, United States of America

Mahati Chintapalli