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Georgia Tech Patents

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Nucleophile-Triggered Degradable Materials and Methods of Making and Using the Same

Disclosed herein are degradable materials comprising the reaction product of an oxanorbornadiene crosslinker or derivative thereof and a multivalent nucleophile-terminated compound, wherein the reaction product is a degradable elastic solid capable of entraining cargo. Also disclosed herein are degradable materials comprising a polymeric and hyperbranched crosslinked material made with oxanorbornadiene linkage that can be activated for cleavage at a predetermined rate by addition of a nucleophile. Also disclosed herein are methods of making and using the same.

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Methods and Systems for Determining Sensory Motor Performance Based on Non-Postural Information

Methods and systems relate to determining sensory motor performance based on user non-postural movements within a generated dynamic virtual environment. The generated environment requires users to: (i) utilize primary sensor inputs (e.g., vision, vestibular sensation and somatosensation); (ii) assess the dynamic virtual environment; and (iii) integrate and translate those inputs into movement to control the dynamic virtual environment. The methods may include receiving non-postural user input with respect to a state of one or more attributes of a dynamic virtual environment provided on a user interface for one or more sessions, the one or more attributes including a control object and a target which moves with respect to the control object; determining performance information based on the user input and the state of the one or more attributes for the one or more sessions; and determining sensory motor performance information from the performance information.

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Composite Nanoparticle Stabilized Core Carbon Molecular Sieve Hollow Fiber Membranes Having Improved Permeance

Disclosed herein are asymmetric multilayer carbon molecular sieve ("CMS" ) hollow fiber membranes and processes for preparing the membranes. The processes include simultaneously extruding a core dope containing a polymer and suitable nanoparticles, a sheath dope, and a bore fluid, followed by pyrolysis of the extruded fiber.

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Reverse Osmosis Membranes and Separations

Asymmetric membrane structures are provided that are suitable for various types of separations, such as separations by reverse osmosis. Methods for making an asymmetric membrane structure are also provided. The membrane structure can include at least one polymer layer. Pyrolysis can be used to convert the polymer layer to a porous carbon structure with a higher ratio of carbon to hydrogen.

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Polycations and Methods of Making and Using Thereof

Disclosed are polycationic polymers. The polycationic polymers can include a plurality of positively charged centers, each of which is formed by condensation of cyclic bis-electrophile (e.g., a 9-thia/aza/selenabicyclo[3.3.1]nonyl electrophile) with a nucleophile. The resulting polycationic polymers can efficiently bind nucleic acids. The polycations can also exhibit properties of cytotoxicity and DNA transfection with interesting structure-activity characteristics.

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Packet-Level Clustering for Memory-Assisted Compression of Network Traffic

Certain implementations of the disclosed technology may include methods and computing systems for memory-assisted compression of network packets using packet-level clustering. According to an example implementation, a method is provided. The method may include vectorizing a plurality of data packets stored in a memory, calculating respective distances between each of the respective vectorized data packets, clustering the plurality of data packets into a plurality of data packet clusters, obtaining a sample data packet to be compressed, identifying a training data packet cluster from among the plurality of data packet clusters, and compressing the sample data packet using a compression algorithm.

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Systems for Implanting and Using A Conduit within a Tissue Wall

Various embodiments of the present invention provide a conduit system including an outer lumen, an inner lumen, and an attaching device. In other embodiments, a multiple access port device adapted for communication with at least one of an outer lumen, an inner lumen, or an attaching device of a conduit system is provided. In yet other embodiments, a system including an inner lumen that is collapsible is provided. Means for closing a conduit system are also provided, including a plug for insertion through an attaching device and a variable radius coiled member associated with an attaching device.

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Memory and Logic Lifetime Simulation Systems and Methods

Aspects of the disclosed technology include a method including extracting, by a processor, a plurality of features from one from among a layout of a circuit, a netlist of the circuit, and the layout and the netlist of the circuit; computing, by the processor, respective lifetime distributions of the plurality of extracted features based on at least one circuit profile; and estimating, by the processor, a lifetime of the circuit by combining the respective lifetime distributions of the plurality of extracted features.

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Inkjet Printed Flexible Van Atta Array Sensor

A radio-frequency responsive device includes a dielectric substrate having a first side and an opposite second side. A Van Atta array reflector is printed on the first side of the dielectric substrate. The Van Atta array reflector reflects an incident signal at a predetermined radio frequency at an incident angle. A conductive ground layer is disposed adjacent the second side of the dielectric substrate. In a method of making a radio-frequency responsive device, a Van Atta array reflector is printed on a first side of a dielectric substrate. A conductive ground layer is applied to a second side of the dielectric substrate, in which the second side is opposite the first side.

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Soft Switching Solid State Transformers and Converters

Various examples are provided for soft switching solid state transformers and converters, and their operation and application. In one example, a soft switching solid state power transformer includes a high frequency (HF) transformer; first and second auxiliary resonant circuits coupled to the HF transformer; and first and second current-source inverter (CSI) bridges coupled to the corresponding first auxiliary resonant circuits. The first and second CSI bridges include reverse blocking switch assemblies that conduct current in one direction and block voltage in both directions. In another example, a reactive power compensator includes a high frequency (HF) transformer, first, second and third auxiliary resonant circuits coupled to the HF transformer, and first, second and third current-source inverter (CSI) bridges coupled to the corresponding first auxiliary resonant circuits. In another example, a converter includes an auxiliary resonant circuit coupled across an inductor and first and second CSI bridges coupled across the inductor.

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