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  • Graphene Films and Method for Transfer | TechLink
    graphene film transferred is limited only by the available dimensions of the transfer tape Image Right The US Navy has developed a dry process technique above to transfer large areas of graphene films to a variety of handle substrates The Technology The NRL approach is amenable to use on a variety of handle substrates as appropriate for the specific device application The flexibility of the approach has been demonstrated through the transfer of large area epitaxial graphene films from C face SiC donor substrates to SiO2 on Si p and n type metal organic chemical vapor deposition MOCVD GaN and thin atomic layer deposition ALD Al2O3 handle substrates Benefits Large Scale Graphene Transfer Size is limited only by the available dimensions of the commercially available thermal release tape High Quality Films Dry removal helps eliminate issues with wrinkling folding or tearing of the graphene films no additional holes are introduced in the material Versatile Compatible with a variety of handle substrates for use in flexible electronics optically transparent contacts and other advanced devices The Opportunity Published US patent is available for license Click Here for Patent Access Potential for collaboration with Naval Research Laboratory researchers Contacts Dr Brian Metzger Senior

    Original URL path: http://techlinkcenter.org/summaries/graphenetransfer (2016-02-09)
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  • Macromolecular Transport Hyperbranched Polymers | TechLink
    total quantity of additive required to achieve high concentration at the surface and minimizes the impact of the additive on the bulk properties of the coating Hyperbranched polymers HBP are modified with fluorinated aliphatic chains that buoy the molecule to the surface of a coating The HBPs can also incorporate a variety of anchors for adhesion in the coating and are engineered to deliver particular ionic species bio reactive sites or catalysts to the coating surface without leaching Efficacy has been demonstrated in polyurethane polyurea and epoxy systems Validated concepts include waterproofing and antimicrobial applications Transport of additives to the surface has been increased 10 30x or more over bulk additives The technique was proven compatible with existing coating system and MilSpecs Benefits Broad Platform Technology Technology supports a wide range of paints and coatings including anti fouling marine coatings pool coatings medical coatings and wood treatments proven effectiveness in water dispersion and antimicrobial activity in several polymer systems Demonstrated Efficacy Demonstrated repeatable 10x self segregation of active components to the air polymer interface in coatings over a variety of applications including a low volatile organic chemical thermoplastic polyurethane military coating Flexible Chemistry The hyperbranched polymer scaffold is adaptable to deliver a myriad of reactive species to the air polymer interface in a multitude of paint and coating systems The Opportunity US Patents available for license US 8 815 996 US 7 560 520 US 6 855 773 Potential for collaboration with Army Research Laboratory researchers Additional technical information and published journal articles available upon request Contacts Dan Swanson CLP Senior Technology Manager Licensing Leader Montana State University TechLink Bozeman Montana dss montana edu 406 994 7736 Technology Managers and Senior Advisors Read more about Dan Swanson CLP Dr Austin Leach Senior Technology Manager Montana State University TechLink Bozeman Montana

    Original URL path: http://techlinkcenter.org/summaries/macromolecular-transport-hyperbranched-polymers (2016-02-09)
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  • Active Aluminum-Rich Primers | TechLink
    additional adhesive coating prior to a top coat Image Right The Technology The US Naval Air Warfare Center Aircraft Division NAWCAD is a leading developer of environmentally friendly coatings and is currently focused on developing an improved universal primer for protecting assets made of aluminum steel and mixed metals NAWCAD s new primer is based on an active aluminum alloy which is incorporated as a corrosion inhibiting pigment or powder The primer is designed to provide electrochemical protection to aluminum steel and other metallic objects and to withstand the severe operating environment of Navy aircraft ships and facilities as well as any other outdoor environment and be easy to mix and apply The primer is compatible with typical surface preparations including aluminum anodize and conversion coating phosphate coatings on steel sacrificial coatings and other primers It also provides good adhesion and corrosion performance when applied directly to the surface of metals and composites The active aluminum alloy powders may be added to any suitable resin or binder system including epoxies polyurethanes polysiloxanes polythioethers polysufides silicates titanates and zirconates Benefits Superior protection on aluminum and phosphated steel some grit blasted steel Targeting MIL PRF23377 for aluminum MIL DTL 53022 Type IV for aluminum and steel phosphated Mil DTL 2441 Formula 159 A A 59745 and TT P 490 Type VIII for grit blasted steel Useful in corrosion protection as a barrier wet installation of fasteners adhesion for other coatings Diverse markets such as military automotive shipping utilities sporting goods architectural The Opportunity Issued patents US 8 262 938 and 8 277 688 and related applications are available for license Potential for collaboration with US Navy inventor and laboratory Contacts Dan Swanson CLP Senior Technology Manager Licensing Leader Montana State University TechLink Bozeman Montana dss montana edu 406 994 7736 Technology Managers

    Original URL path: http://techlinkcenter.org/summaries/active-aluminum-rich-primers (2016-02-09)
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  • Amorphous Bubble Bonding to Create High-Performance Solids and Foams | TechLink
    to efficiently and effectively produce foams and cellular materials with a range of densities strengths and stiffnesses Such materials are used in a wide variety of lightweight structural energy absorption thermal and acoustic insulation and catalysis applications in aerospace automotive and other industries Current techniques are difficult to engineer in many materials or require blowing techniques or gas injections that generate inconsistencies or are incompatible with otherwise desirable materials The NSWC Corona solution heats amorphous hollow spheres above the glass transition temperature Tg The resultant viscous flow transition can be controlled via pressure differential to expand or contract the spheres and bond them together in the desired morphology The process is highly tunable and amenable to a broad range of materials with sufficient thermal stability above the glass transition temperature Benefits High Performance Silicate glass bonded by the ABB process exceeds 10MPa m3 energy absorbing capacity outperforming AlSi foams and all other cellular solids except end grain balsa Broadly Applicable Amorphous bubble bonding is compatible with a wide range of desirable materials that possess reasonable thermal stability above glass transition including bulk metallic glasses plastics ceramics and oxide glasses Precisely Tunable Technique produces tailored material performance through fine control over

    Original URL path: http://techlinkcenter.org/summaries/amorphous-bubble-bonding-create-high-performance-solids-and-foams (2016-02-09)
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  • Relaxor Ferroelectric Single Crystal Transducers | TechLink
    patented piezoelectric transducers that deliver high strain over a large bandwidth while requiring a low drive level The key is the application of small levels of compressive stress to domain engineered PIN PNM PT single crystals The pre stress brings the crystal near the phase transition point between rhombohedral Fr and orthorhombic Fo states so that a small AC electrical field can induce a transition from Fr to Fo and generate the strain that drives the transducer A DC bias electrical field is also employed to lower the stress level at which the transition occurs resulting in a system where a small variation in either stress or electric field can trigger the transition The technology is amenable to a variety of transducer designs including the simple robust and tunable design shown in the graphic to the right The sharp reversible domain switching effect of the Navy s technology leads to potential applications in a broad field including sound projectors ultralarge stroke and nonlinear actuators piezoelectric transformers pulsed field sources magnetoelectric micropumps energy harvesting and composite magnetoelectric magnetic sensing For additional related technologies please visit techlinkcenter org singlecrystal Benefits High Strain Delivers 0 5 strain levels more than 100x greater than PZT 8 the Navy standard piezoelectric projector material and a 10x increase compared to unstressed crystals of the same composition Low Drive Less than 0 1 MV m required to trigger phase transition a 4x reduction compared to unstressed crystals of the same composition High Performance Up to a 46 dB increase in acoustic energy density compared to PZT 8 Compact High strain enables device size reduction of up to 100x while maintaining a given output performance compared to other devices The Opportunity Issued US Patent 8 604 676 is available for license Potential for collaboration with Naval Undersea Warfare

    Original URL path: http://techlinkcenter.org/summaries/relaxor-ferroelectric-single-crystal-transducers (2016-02-09)
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  • Tunable Energy Harvesting Devices and Sensors | TechLink
    engineered PIN PNM PT ferroelectric single crystals The pre stress brings the crystal near the phase transition so only a small thermal or mechanical input is required to drive the crystal back and forth through the phase transformation The transformation yields a large change in polarization and strain leading to energy density per cycle nearly two orders of magnitude greater than linear piezo materials The Navy s technology exhibits relatively uniform operation over a broad bandwidth unlike conventional mass spring oscillatory harvesters that are limited to peak performance near a resonant frequency The devices are also tunable changing the stress level on the crystal alters the threshold at which phase transition will occur leading to broader ranges where waste heat or other input sources could be exploited For additional information on related technologies go to techlinkcenter org singlecrystal Benefits Compact High energy density per cycle see chart enables significantly smaller devices or more performance from an existing form factor Superior Bandwidth Not limited by resonant frequencies operates across a range of thermal and mechanical regimes Tunable Adjusting the pre stress applied to the crystal alters the phase transition point so the device can operate at optimal temperature electric magnetic and

    Original URL path: http://techlinkcenter.org/summaries/tunable-energy-harvesting-devices-and-sensors (2016-02-09)
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  • Relaxor Ferroelectric Single Crystal Technologies | TechLink
    is required to drive the crystal back and forth through the phase transformation The transformation yields a large change in polarization and strain more than 5 times greater than unstressed crystals of the same composition and orders of magnitude greater than standard piezoelectric materials Key Applications click below for additional information Transducers Relaxor Ferroelectric Single Crystal Transducers TechOp Energy Harvesting Tunable Energy Harvesting Devices and Sensors TechOp Contacts Laurel Halfpap

    Original URL path: http://techlinkcenter.org/summaries/relaxor-ferroelectric-single-crystal-technologies (2016-02-09)
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  • Corrosion Inhibiting Self-Expanding Foam | TechLink
    patent pending self expanding polyurethane foam containing either organic or inorganic corrosion inhibitors The technology is especially useful for application in hollow or sandwiched metal structures Vapor phase corrosion inhibitors VCI are commonly used to protect enclosed surfaces from corrosion however such surfaces need to be physically sealed or the protection will be washed away Foams can provide useful barriers against moisture but they are susceptible to corrosion at the margins that compromises the integrity of the foam The combination of corrosion inhibitors in self expanding foam overcomes the limitations of the individual components by creating a mutually beneficial combination of chemical corrosion inhibition and physical moisture barrier The Army s anti corrosion foam is compatible with a broad range of existing polyurethane foam chemistries and delivery methods The technology also holds the potential to tailor formulations of vapor phase corrosion inhibitors and foam systems to match the specific application such as the differing corrosion inhibition requirements of aluminum vs steel Benefits Effective Protection Maintained 91 of adhesion strength after 500 hours in a salt fog test whereas standard foam maintained only 55 see graph COTS Materials Compatible with a variety of commercially available corrosion inhibitors as well as various

    Original URL path: http://techlinkcenter.org/summaries/corrosion-inhibiting-self-expanding-foam (2016-02-09)
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