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Single chirality of single-walled carbon nanotubes (SWCNTs) is critical for their superb mechanical, thermal, optical and electronic properties. All known methods for producing nanotubes give mixtures of tubes with different chiralities. Physical separation of SWCNT by chirality is thus an enabling step for many potential applications and fundamental studies. The existing anion exchange resins are ...

The applicant will develop a wave energy harvesting system for NOAA buoys. It will ve entirely self-contained (no protruding elements), modular, scalable, and easily deployed. The system employs a unique, inertial mechanism that responds to acceleration forces created by waves. This mechanism will be combined with (1) a proprietary generator that is sensitive to very low levels of torque and ha ...

ABSTRACT: Nanocrystals (NCs) offer many potential benefits for optical refrigeration; these quantum-confined materials have discrete energy levels, large optical transition dipole moments, and high photoluminescence quantum efficiency. Using well-characterized upconverting ion-doped metal oxide NCs and core-shell semiconductor nanocrystals as a baseline, a design of experiments (DOE) will be cond ...

ABSTRACT: We propose to apply modern massively multicore processors to a key problem area of interest to the Air Force: multiphysics computational fluid dynamics (CFD) and computational structural dynamics (CSD) solvers. The capabilities of the CPU to solve these problems have been increasing steadily, but the CPU is still a general-purpose device designed to run diverse applications such as word ...

ABSTRACT: Crystalline semiconductor nanomembranes (NMs) possess the electronic/photonic properties of bulk material, although they are flexible, deformable, and conformable. Semiconductor nanomembranes offer unique opportunities for novel active/ passive electronic, and photonic devices suitable for vertically stacked high-density photonic/electronic integration. Silicon-on-insulator substrates. ...

ABSTRACT: Optical interconnects are the natural choice for interconnecting different chips when current interconnect technologies cannot fulfill current and future system requirements. Examples of optical interconnect architectures are free-space multistage interconnect, optical fiber interconnect, and thin film polymer waveguide-based optical interconnect. While all these architectures were succ ...

Use of projection photolithography allows for fabrication of high fidelity diffraction gratings with individual control on location and shape of each groove using modern semiconductor tools and powerful computer-based simulation and CAD software. The method yields master-grade highly efficient diffraction gratings with high batch-to batch reproducibility at the fraction of the cost of regular hol ...

ABSTRACT: Northwest UAV Propulsion Systems Develops and Manufactures heavy fuel engines for UAVs and is proposing using a purpose built engine for a ScanEagle sized UAS combined with a novel Axial Flux Motor/Generator system and a electric clutch system currently availalbe as a COTS item. We have teamed with Oregon State University for control design & Insitu Inc. for acoustical & flight testing ...