Abstract: Some embodiments include a pulsing power supply comprising a power supply and a transformer comprising: a transformer core; a primary winding wrapped around a portion of the transformer core, the primary winding having a first lead and a second lead; and a secondary winding wrapped around a portion of the transformer core. The pulsing power supply may also include a first switch electrically connected with the first lead of the primary winding and the power supply; and a second switch electrically connected with the second lead of the primary winding and the power supply, wherein the first switch and the second switch are opened and closed at different time intervals. The pulsing power supply may also include a pulsing output electrically coupled with the secondary winding of the transformer that outputs pulses having a voltage greater than about 2 kV and with pulse frequencies greater than 1 kHz.

Abstract: Some embodiments include a plasma system that includes a plasma chamber; an RF driver driving RF bursts into the plasma chamber with an RF frequency greater than 2 MHz; a nanosecond pulser driving pulses into the plasma chamber with a pulse repetition frequency a peak voltage, the pulse repetition frequency being less than the RF frequency and the peak voltage being greater than 2 kV; a first filter disposed between the RF driver and the plasma chamber; and a second filter disposed between the nanosecond pulser and the plasma chamber.

Abstract: Crosslinking compounds for effective and efficient cross-linking and identification of intermolecular and intramolecular interactions of proteins, peptides and nucleic acids.

Abstract: A high voltage inductive adder is disclosed. In some embodiments, the high voltage inductive adder comprising a first adder circuit and a second adder circuit. The first adder circuit including a first source; a first switch electrically coupled with the first source; a first transformer core; and a first plurality of primary windings wound about the first transformer core and electrically coupled with the first switch. The second adder circuit including a second source; a second switch electrically coupled with the second source; a second transformer core; and a second plurality of primary windings wound about the second transformer core and electrically coupled with the second switch. The high voltage inductive adder comprising one or more secondary windings wound around both the first transformer core and the second transformer core and an output coupled with the plurality of secondary windings.

Abstract: A thiol-ene polymeric material is disclosed. The material is produced by the photopolymerization of reactants having thiol and olefin moieties. The material can incorporate encapsulated components, including cells. Additionally, the material can be derivatized by reacting the polymeric material with components such as proteins.

Abstract: A high voltage inductive adder is disclosed. In some embodiments, the high voltage inductive adder comprising a first adder circuit and a second adder circuit. The first adder circuit including a first source; a first switch electrically coupled with the first source; a first transformer core; and a first plurality of primary windings wound about the first transformer core and electrically coupled with the first switch. The second adder circuit including a second source; a second switch electrically coupled with the second source; a second transformer core; and a second plurality of primary windings wound about the second transformer core and electrically coupled with the second switch. The high voltage inductive adder comprising one or more secondary windings wound around both the first transformer core and the second transformer core and an output coupled with the plurality of secondary windings.

Abstract: A thiol-yne polymeric material and methods for producing said polymers are disclosed. The material is produced by the radically mediated polymerization of monomers having alkyne and thiol functional groups. The alkyne moiety, internal or terminal, may react with one or two thiols. Degradable monomers may be used to form degradable polymers.

Abstract: Provided herein are systems and methods for polymerizing and programming a liquid crystal polymer, including a liquid crystal elastomer (LCE) with two-way shape-memory via a stepped or self-limiting reaction. In the described method, the reaction may be stepped to achieve different aspects of the two-way shape-memory effect in the produced LCE. In one embodiment, the method creates a polydomain LCE body with a completed thiol-acrylate Michael addition reaction polymerization. The method may further crosslink the polydomain LCE body under a stimulus, thereby locking a domain state in a portion of the polymer. A two-way shape-memory effect of the LCE may thereafter be programmed and locked into the LCE the second stage polymerization reaction. The self-limiting reaction allows for unprecedented control over LCE domain states and cross-linking densities, as well as the resultant mechanical and optical properties of the LCE formed.

Abstract: Crosslinking compounds for effective and efficient cross-linking and identification of intermolecular and intramolecular interactions of proteins, peptides and nucleic acids.

Abstract: The invention provides methods of reducing shrinkage stress in cross-linked polymerized materials by combining an addition-fragmentation chain transfer additive with a resin system prior to polymerization. The methods of the invention can improve the performance of conventional resin systems by reducing the shrinkage stress without significantly degrading the mechanical properties of the polymerized material. The shrinkage stress in the crosslinked polymeric materials produced by the methods of the invention may be from 25% to 75% of that of a control material produced by polymerization of the resin system alone to the same conversion.

Abstract: A thiol-ene polymeric material is disclosed. The material is produced by the photopolymerization of reactants having thiol and olefin moieties. The material can incorporate encapsulated components, including cells. Additionally, the material can be derivatized by reacting the polymeric material with components such as proteins.

Abstract: A thiol-yne polymeric material and methods for producing said polymers are disclosed. The material is produced by the radically mediated polymerization of monomers having alkyne and thiol functional groups. The alkyne moiety, internal or terminal, may react with one or two thiols. Degradable monomers may be used to form degradable polymers.

Abstract: A thiol-ene polymeric material is disclosed. The material is produced by the photopolymerization of reactants having thiol and olefin moieties. The material can incorporate encapsulated components, including cells. Additionally, the material can be derivatized by reacting the polymeric material with components such as proteins.

Abstract: A thiol-ene polymeric material is disclosed. The material is produced by the photopolymerization of reactants having thiol and olefin moieties. The material can incorporate encapsulated components, including cells. Additionally, the material can be derivatized by reacting the polymeric material with components such as proteins.

Abstract: Provided herein are systems and methods for polymerizing and programming a liquid crystal polymer, including a liquid crystal elastomer (LCE) with two-way shape-memory via a stepped or self-limiting reaction. In the described method, the reaction may be stepped to achieve different aspects of the two-way shape-memory effect in the produced LCE. In one embodiment, the method creates a polydomain LCE body with a completed thiol-acrylate Michael addition reaction polymerization. The method may further crosslink the polydomain LCE body under a stimulus, thereby locking a domain state in a portion of the polymer. A two-way shape-memory effect of the LCE may thereafter be programmed and locked into the LCE the second stage polymerization reaction. The self-limiting reaction allows for unprecedented control over LCE domain states and cross-linking densities, as well as the resultant mechanical and optical properties of the LCE formed.

Abstract: The present invention includes a composition comprising an alkyne-based substrate, an azide-based substrate, a Cu(II) salt and a photoinducible reducing agent. The present invention further includes a method of immobilizing a chemical structure in a given pattern onto a section of the surface of a solid substrate, using the photoinducible Cu(I)-catalyzed azide-alkyne cycloaddition Click reaction.

Abstract: The invention includes a composite material comprising magnetic field responsive particles distributed in a reversibly crosslinked polymer, wherein the reversibly crosslinked polymer includes thermally reversible bonds. In one embodiment, exposing the composite material to an electromagnetic field allows for crack-healing, remolding and/or bonding of the material.

Abstract: A thiol-ene polymeric material is disclosed. The material is produced by the photopolymerization of reactants having thiol and olefin moieties. The material can incorporate encapsulated components, including cells. Additionally, the material can be derivatized by reacting the polymeric material with components such as proteins.

Abstract: The invention includes a novel light-activated polymerizable composition, wherein reversible crosslinks may be converted into irreversible crosslinks using a fully controllable physical and/or chemical process. The invention further includes methods of photofixing a light sensitive material or patterning an article comprising a light sensitive material.

Abstract: A thiol-ene polymeric material is disclosed. The material is produced by the photopolymerization of reactants having thiol and olefin moieties. The material can incorporate encapsulated components, including cells. Additionally, the material can be derivatized by reacting the polymeric material with components such as proteins.