47 research outputs found
The critical reception of William Faulkner in America
No full textThesis (M.A.)--Michigan State College of Agriculture and Applied Science. Dept. of English, 1948Includes bibliographical references (leaves 106-111
Thin films with tunable refractive indices for application of broadband, omni-directional anti-reflection coatings
No full textAugust 2008School of ScienceM
High performance optical coatings utilizing tailored refractive index nanoporous thin films
No full textDecember 2011School of SciencePh
Improved power conversion efficiency of polycrystalline Si solar cells by nanostructured broadband and omni-directional antireflection coatings
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Multilayer nano-structured anti-reflection coatings with broad-band omnidirectional characteristics
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Formation of Monolithic Ion-Selective Transport Media Based on "Click" Cross-Linked Hyperbranched Polyglycerol
No full textIn the emerging field of organic bioelectronics, conducting polymers and ion-selective membranes are combined to form resistors, diodes, transistors, and circuits that transport and process both electronic and ionic signals. Such bioelectronics concepts have been explored in delivery devices that translate electronic addressing signals into the transport and dispensing of small charged biomolecules at high specificity and spatiotemporal resolution. Manufacturing such "iontronic" devices generally involves classical thin film processing of polyelectrolyte layers and insulators followed by application of electrolytes. This approach makes miniaturization and integration difficult, simply because the ion selective polyelectrolytes swell after completing the manufacturing. To advance such bioelectronics/iontronics and to enable applications where relatively larger molecules can be delivered, it is important to develop a versatile material system in which the charge/size selectivity can be easily tailormade at the same time enabling easy manufacturing of complex and miniaturized structures. Here, we report a one-pot synthesis approach with minimal amount of organic solvent to achieve cationic hyperbranched polyglycerol films for iontronics applications. The hyperbranched structure allows for tunable pre multi-functionalization, which combines available unsaturated groups used in crosslinking along with ionic groups for electrolytic properties, to achieve a one-step process when applied in devices for monolithic membrane gel formation with selective electrophoretic transport of molecules.Funding Agencies|Swedish Foundation for Strategic Research; Swedish Government Strategic Research Area in Materials Science on Advanced Functional Materials at Linkoping University; Onnesjo Foundation; Knut and AliceWallenberg Foundation</p
Surface Acoustic Waves to Drive Plant Transpiration.
No full textEmerging fields of research in electronic plants (e-plants) and agro-nanotechnology seek to create more advanced control of plants and their products. Electronic/nanotechnology plant systems strive to seamlessly monitor, harvest, or deliver chemical signals to sense or regulate plant physiology in a controlled manner. Since the plant vascular system (xylem/phloem) is the primary pathway used to transport water, nutrients, and chemical signals-as well as the primary vehicle for current e-plant and phtyo-nanotechnology work-we seek to directly control fluid transport in plants using external energy. Surface acoustic waves generated from piezoelectric substrates were directly coupled into rose leaves, thereby causing water to rapidly evaporate in a highly localized manner only at the site in contact with the actuator. From fluorescent imaging, we find that the technique reliably delivers up to 6x more water/solute to the site actuated by acoustic energy as compared to normal plant transpiration rates and 2x more than heat-assisted evaporation. The technique of increasing natural plant transpiration through acoustic energy could be used to deliver biomolecules, agrochemicals, or future electronic materials at high spatiotemporal resolution to targeted areas in the plant; providing better interaction with plant physiology or to realize more sophisticated cyborg systems.Funding agencies:Funding made possible by the Knut and Alice Wallenberg Foundation Scholar grant (KAW 2012.0302). Thank you to Drs. Eleni Stavrinidou, Gabor Mehes, David Poxson, and Mr. Jesper Edberg for support and discussions on current and future e-plant research and ideas. Additional acknowledgement to Prof. Thomas Laurell, Dr. Andreas Lenshof, Dr. Maria Antfolk (Lund University), and Prof. Leslie Yeo (RMIT University, Melbourne) for assistance getting started with SAW acoustofluidics. Magnus Karlsson and Gustav Knutsson (Linkoping University) provided indispensable help with the RF amplifier.</p
Design of graded refractive index micro-patterns to enhance light-extraction efficiency in GaInN blue light-emitting diodes
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Quantification of porosity and deposition rate of nano-porous films grown by oblique angle deposition
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