Patent application number | Description | Published |
20120261575 | Thermal Imager Using Metamaterials - An apparatus and method are disclosed for detecting terahertz radiation at room temperature. A detecting pixel includes a sub-wavelength split-ring resonator, and is mechanically coupled to (but thermally decoupled from) a substrate via a cantilever formed from two materials that have a significant mismatch in their thermal expansion coefficients. Incident radiation causes the split-ring resonator to resonate, thereby generating heat that is transferred to the cantilever, causing the cantilever to flex. An optical readout system includes a secondary light source, such as a laser, that shines on a reflective surface on the pixel, whereby a photodiode detects the reflected light and permits calculation of a relative deflection of the pixel in the nanometer range. An exemplary detector has a noise equivalent power rating of approximately 60 pW/√Hz. | 10-18-2012 |
20130140649 | TRANSIENT DEVICES DESIGNED TO UNDERGO PROGRAMMABLE TRANSFORMATIONS - The invention provides transient devices, including active and passive devices that electrically and/or physically transform upon application of at least one internal and/or external stimulus. Materials, modeling tools, manufacturing approaches, device designs and system level examples of transient electronics are provided. | 06-06-2013 |
20130240251 | SILK ELECTRONIC COMPONENTS - The invention relates to silk electronic components and methods for fabricating the same. The silk electronic components can be used as novel devices, such as implantable bioelectric and/or biophotonic devices, biosensors, surveillance devices, invisible cloaks, electromagnetic concentrators or antennas. | 09-19-2013 |
20130310908 | PLASMONIC NANOPARTICLE-DOPED SILK MATERIALS - Provided herein are silk fibroin-based photothermal elements and uses thereof. The silk fibroin-based photothermal elements comprise a plurality of plasmonic nanoparticle distributed in a silk fibroin matrix, and can generate heat when the plasmonic nanoparticles are exposed to electromagnetic radiation. The silk fibroin-based photothermal elements can be adapted to be conformable and biodegradable, and can further be integrated with various electronic components, such as a thermo-electric device for conversion of heat into electricity. The invention is useful for various in vivo applications, such as photothermal therapy, controlled drug-delivery devices or wireless powering of implanted micro-devices. | 11-21-2013 |
20140154788 | ELECTRONIC COMPONENTS ON PAPER-BASED SUBSTRATES - The present disclosure relates to paper-based substrates and apparatus comprising such substrates. The apparatus may include a patterned conductive structure coupled to the paper-based substrate, wherein the patterned conductive structure responds to electromagnetic radiation. | 06-05-2014 |
20150307728 | BIOPOLYMER-BASED INKS AND USE THEREOF - The present application discloses biopolymer-based ink formulations that are useful for inkjet printing and other applications. Related methods are also disclosed. | 10-29-2015 |
Patent application number | Description | Published |
20090306772 | Ocular Scaffolds and Methods for Subretinal Repair of Bruch's Membrane - The present invention provides ocular scaffolds composed of poly (e-caprolactone) configured to be inserted into the sub-retinal space of a subject, as well as methods for treating eye disease (e.g., age-related macular degeneration) with such scaffolds. The present invention also provides methods of making such scaffolds. | 12-10-2009 |
20110004304 | CULTURING RETINAL CELLS AND TISSUES - Disclosed are various methods and bioreactor devices for culturing retinal cells and/or tissues. The bioreactor devices may, in certain embodiments, include a microchannel network, a scaffold for culturing neuroretinal cells, and a porous membrane separating the microchannel network from the scaffold. | 01-06-2011 |
20130004386 | FABRICATING MICROFLUIDIC STRUCTURES FOR BIOMEDICAL APPLICATIONS - Microfluidic structures featuring substantially circular channels may be fabricated by embossing polymer sheets. | 01-03-2013 |
20140234381 | SCAFFOLD FOR SUBRETINAL CELL TRANSPLANTATION AND DRUG DELIVERY - The following disclosure provides compositions and methods for the repairing of a diseased or disordered retina, for example, in patients suffering from age-related macular degeneration (AMD). | 08-21-2014 |
Patent application number | Description | Published |
20090029199 | Cathode Arrangements for Fuel Cells and Other Applications - The present invention generally relates to electrochemical devices such as fuel cells and, in particular, to cathode assemblies for use in such devices. In some aspects of the invention, the cathode assembly contains one or more channels able to transport a gas, such as air. In some cases, the channels may be defined by a cathode current collector and a cathode surrounding the cathode current collector, where the cathode current collector and the cathode define one or more channels. In some embodiments, the cathode contacts the current collector via one or more projections such that the cathode and the current collector are not in intimate contact. The cathode and the current collector, for example, may be in direct contact, and together define one or more spaces or conduits for gas flow. Other aspects of the invention relate to kits involving such cathode assemblies, methods of promoting the making or use of such cathode assemblies, and the like. | 01-29-2009 |
20090166214 | Porous Ceramic Materials - The present invention relates to porous articles, including porous ceramic materials, which can be used in a variety of settings, but find particular use in connection with electrochemical devices such as fuel cells, as well as methods of their manufacture and use. The porous ceramic may have, in some aspects of the invention, an average pore size of between about 1 micrometer and about 300 micrometers, and in some cases, certain advantageous permeability characteristics with respect to species useful in certain types of electrochemical devices. In some cases, the ceramic may be sufficiently porous to allow gaseous molecules (e.g., air or oxygen, gaseous fuels, etc.) and/or liquids (e.g., water or liquid fuels) to be transported therethrough, and/or the ceramic may be substantially resistive or impermeable to a liquid such as a non-wetting liquid, for instance, a liquid metal such as liquid (molten) tin. Another aspect of the invention is generally directed to systems and methods of forming such porous ceramics. In one set of embodiments, a porous ceramic may be formed by impregnating a template (for example, an interconnected template, typically three-dimensional) with a ceramic precursor, causing the ceramic precursor to form a ceramic having an open channel structure, and removing the template. The ceramics of the present invention may find use in a wide variety of applications, including kiln furniture, filters, catalyst supports, fuel cells, carriers for absorbents, insulators, or separators (e.g., for a burner and a flame), and the ceramics may be useful at a broad range of temperatures. For example, a ceramic may be used to separate a fuel from an electrode in a fuel cell (for instance, by converting fuel molecules to produce reaction products), as the ceramic may be permeable to a gas and/or a liquid. Other aspects of the invention relate to kits involving such ceramics, methods of promoting the making or use of such ceramics, and the like. | 07-02-2009 |
20100136463 | ELECTROCHEMICAL DEVICE AND METHODS FOR ENERGY CONVERSION - The present invention relates to an electrochemical device. The device features an anode constructed of materials such that the device can be chemically recharged. In addition, the device is capable of switching between operating as a fuel cell or as a battery. The switch can occur without cessation of electrical output. In certain aspects of the invention, the device is capable of operating at a temperature of less than 1000° C. Other aspects feature a liquid anode which allows higher output, dispersion of fuel and minimal stresses in an interface comprising the anode. Preferably the anode is a liquid at a temperature of less than 1000° C. The invention also relates to methods for energy conversion in which a continual electrical output can be produced in both the presence of fuel without anode consumption or the absence of fuel. | 06-03-2010 |
20110177413 | ELECTROCHEMICAL DEVICE AND METHODS FOR ENERGY CONVERSION - The present invention relates to an electrochemical device. The device features an anode constructed of materials such that the device can be chemically recharged. In addition, the device is capable of switching between operating as a fuel cell or as a battery. The switch can occur without cessation of electrical output. In certain aspects of the invention, the device is capable of operating at a temperature of less than 1000° C. Other aspects feature a liquid anode which allows higher output, dispersion of fuel and minimal stresses in an interface comprising the anode. Preferably the anode is a liquid at a temperature of less than 1000° C. The invention also relates to methods for energy conversion in which a continual electrical output can be produced in both the presence of fuel without anode consumption or the absence of fuel. | 07-21-2011 |
20110311900 | ELECTROCHEMICAL DEVICE CONFIGURATIONS - The present invention generally relates to electrochemical devices such as fuel cells and, in particular, to various component configurations including configurations for converting common fuels directly into electricity without additional fuel reforming or processing. Certain aspects of the invention are generally directed to configurations in which an anode of the device surrounds the electrolyte and/or the cathode of the device. In some embodiments, all single cells in a fuel cell stack share a common anode fuel chamber. The anode, in some cases, may be exposed to a fuel. In one set of embodiments, the anode of the device may be fluid during operation of the fuel cell, and in some cases, a porous container may be used to contain the anode during operation of the fuel cell. Other aspects of the invention relate to methods of making such devices, methods of promoting the making or use of such devices, and the like. | 12-22-2011 |
20130143139 | ELECTROCHEMICAL DEVICE AND METHODS FOR ENERGY CONVERSION - The present invention relates to an electrochemical device. The device features an anode constructed of materials such that the device can be chemically recharged. In addition, the device is capable of switching between operating as a fuel cell or as a battery. The switch can occur without cessation of electrical output. In certain aspects of the invention, the device is capable of operating at a temperature of less than 1000° C. Other aspects feature a liquid anode which allows higher output, dispersion of fuel and minimal stresses in an interface comprising the anode. Preferably the anode is a liquid at a temperature of less than 1000° C. The invention also relates to methods for energy conversion in which a continual electrical output can be produced in both the presence of fuel without anode consumption or the absence of fuel. | 06-06-2013 |
Patent application number | Description | Published |
20110116389 | Ranking Nodes in Networks with Topologies Arranged as Directed Acyclic Graphs - Embodiments of the invention disclose a system and a method for determining a rank of a node in a multi-hop wireless network, wherein the network includes a gateway node, client nodes, and relay nodes, wherein a node p(i) is a default parent of the node i having a rank, and the network uses a directed acyclic graph (DAG) topology. The method comprises steps of transmitting at least one data packet from the node to the default parent node over a wireless link; counting a number of successful transmissions of most recent transmissions of data packets; determining an expected transmission time (ETX) for the wireless link based on the number of successful transmissions in the most recent transmissions; and assigning a rank R(i) to the node based on the rank of the parent node and the ETX. | 05-19-2011 |
20110164556 | Wireless Star Networks with Dual Adaptive Central Nodes - A wireless network with a star topology has a first and second central node. The first central node starts up first and initiates the network. The second central node starts up second and synchronizes to the first central node, and wherein one node is in active mode and the other node is in standby mode, and a set of leaf nodes configured to communicate only with the active node. | 07-07-2011 |
20110167126 | Method and Network for Transmitting Data in a Wireless Network with Fixed Transmission Intervals - A wireless network master node periodically broadcasts beacons that specify a structure of a following fixed length superframe. Slave nodes determine a channel condition between each slave and the master. Then, the set of slaves is partitioned into subsets of slaves according to the channel conditions. The master assigns, to each slave, a transmission rate in a low to high order according to the channel conditions, and the slaves transmit data to the master in the low to high order between two consecutive beacons, wherein the subsets of slaves with a higher transmission rate also receive the data from the subsets of slaves with a lower transmission rate, and wherein a slave with a higher transmission rate includes a part of or all the data from a slave with a lower transmission rate. | 07-07-2011 |