| Multi-Scale Biomimetic Adhesives |
10-Feb-2009 |
16 pages |
| Authors:
Kimberly L Turner; CALIFORNIA UNIV REGENTS SANTA BARBARA OFFICE OF RESEARCH
|
 | Over the life of this grant, significant technical contributions have been made. When this grant commenced, we were at the very beginnings of building a hierarchical gecko-inspired adhesive. Since that point, we have developed hierarchical synthetic adhesive has been developed which utilizes milli/micro/nanofabrication to build active adhesive devices. In addition, in the final year of the grant, the adhesive was made actively reversible, and we were able (with additional funds ... |
|
| Role of Merlin in the Growth and Transformation of Arachnoidal Cells |
Jan-2009 |
40 pages |
| Authors:
Anita Lal; CALIFORNIA UNIV REGENTS SANTA BARBARA OFFICE OF RESEARCH
|
| This proposal is concerned with the functional role of merlin in arachnoidal and meningioma cells. In year 1, we developed meningioma-specific NF2 model systems. In Year 2, we characterized the phenotypic effects of these model systems. We showed that merlin loss enhances loss of contact inhibition of growth, increases anchorage independent growth and increases S-phase entry. In the final year, we have shown that merlin loss promotes tumor growth in ... |
|
| New Thermal Protection Concepts for the Next Generation Gas Turbines and Hypersonic Vehicles |
Dec-2008 |
7 pages |
| Authors:
David R Clarke; CALIFORNIA UNIV REGENTS SANTA BARBARA OFFICE OF RESEARCH
|
| Thermal protection of gas turbine blades, combustors and some rocket nozzles is generally provided by thin superficial layer coatings of yttria-stabilized zirconia (YSZ). This material, deposited by either electron-beam physical vapor deposition or plasma-spraying, has exceptionally low thermal conductivity up to high temperatures but its resistance to radiative heat transport is not known in any detail. Although oxides with still lower thermal conductivity at high temperatures than YSZ have been ... |
|
| Advanced Transmission Electron Microscopy Characterization of Novel Thermoelectric Materials |
MAR 2008 |
16 pages |
| Authors:
Susanne Stemmer; John Bowers; CALIFORNIA UNIV REGENTS SANTA BARBARA OFFICE OF RESEARCH
|
| The report described our research activities focused on the characterization of new epitaxial thermoelectric materials that are comprised of semimetallic, epitaxial ErAs nanoparticles embedded in a semiconducting epitaxial In0.53Ga0.47As (InGaAs) matrix. The composites were grown by molecular beam epitaxy. We used advanced transmission electron microscopy (TEM) techniques to perform a detailed analysis of the shapes and distribution of random ErAs particles and the overall morphology of the composites. We show ... |
|
| Study of Self-Assembly Monolayers for Colloidal Processing of Ceramics and Textured, Super-Hydrophobic |
18 AUG 2006 |
9 pages |
| Authors:
Frederick F. Lange; CALIFORNIA UNIV REGENTS SANTA BARBARA OFFICE OF RESEARCH
|
| Objectives are proposed concerning the molecules that form self assembled monolayers (SAMs) that can be used in colloidal powder processing and the fabrication of textured, super-hydrophobic ceramic surfaces. The first objective is to understand and control the steric forces between particles coated with hydrophilic (water loving) SAMs. This approach is new and will be exploited by industry in a variety of applications. The second is to use this knowledge to ... |
|
| Plastic/Brittle Behavior of Consolidated Bodies: Role of Particle Pair Potential |
2005 |
15 pages |
| Authors:
F. F. Lange; CALIFORNIA UNIV REGENTS SANTA BARBARA OFFICE OF RESEARCH
|
| Colloidal powder processing can improve the reliability and strength of ceramics by reducing the size of strength degrading heterogeneities through filtering the powder prior to consolidation. Removing heterogeneities greater than a given size is equivalent to a proof test, namely, truncating the strength distribution. Although significant property improvements can be made with the colloidal approach, new forming methods-consistent with the removal of flaws, are still under development. This development requires ... |
|
| Low Noise Amplifiers Based on Lattice Engineered Substrates |
01 NOV 2004 |
117 pages |
| Authors:
James S. Speck; Umesh K. Mishra; CALIFORNIA UNIV REGENTS SANTA BARBARA OFFICE OF RESEARCH
|
| In this program we are developing novel strain relaxed templates for device applications including low noise amplifiers. The approach we are investigating utilizes the process of relaxation of a coherent hypercritical thickness strained semiconductor overlayer (e.g., InGaAs). In the first two years of this program, we had focused on the relaxation of a strained layer in direct contact with an oxidizing Al containing semiconductor (AlAs or AlGaAs). In the third ... |
|
| Quantum Coherent Electron-Phonon Nanolaboratories |
30 AUG 2003 |
84 pages |
| Authors:
A. N. Cleland; CALIFORNIA UNIV REGENTS SANTA BARBARA OFFICE OF RESEARCH
|
| This project was aimed at creating mechanically suspended nanostructures that include active electronic devices, with the goal of achieving coherence between electrons and vibrational phonons. We pursued separately the use of metal tunnel junctions (515 tunnel junctions and single- electron transistors, SETs), and electrostatically defined double quantum dots, as the electronic system. We performed cryogenic measurements with varying degrees of success. Due to unanticipated difficulties, the focus shifted direction several ... |
|
| New Hybrid Route to Biomimetic Synthesis |
21 MAR 2003 |
76 pages |
| Authors:
Daniel E. Morse; CALIFORNIA UNIV REGENTS SANTA BARBARA OFFICE OF RESEARCH
|
| To develop economical low-temperature routes to biomimetic synthesis of high-performance composite materials, with control of composition and structure based on the molecular mechanisms controlling biomineralization of calcium- and silicon-based nanocomposites. HIGHLIGHTS: We report success in our originally proposed transition from analysis of biological systems to the development of useful applications across a broad range of materials. We discovered that the silicateins - proteins we originally discovered responsible for the structure-directing ... |
|
| Direct Analysis of Marine Interfaces: Mussels and MALDI |
07 JAN 2002 |
5 pages |
| Authors:
J. H. Waite; CALIFORNIA UNIV REGENTS SANTA BARBARA OFFICE OF RESEARCH
|
| The adhesive plaques of mussel (Mytilus) byssal threads leave behind residual prints when removed from various surface types. These prints are believed to contain the primary components responsible for opportunistic nonspecific mussels adhesion. Prints from all surfaces contain a 6 kDa dopa-rich pep tide, mefp-3. In contrast, mefp-5 (9 kDa) can only be detected on steel. The high level of dopa in both proteins can be linked to cross-linking and ... |
|
| The Solar Mass Ejection Imager Optics and Baffles - Design and Construction |
15 NOV 2000 |
48 pages |
| Authors:
Bernard V. Jackson; Andrew Buffington; P. P. Hick; CALIFORNIA UNIV REGENTS SANTA BARBARA OFFICE OF RESEARCH
|
| The purpose of SMEI is a proof-of-concept of the ability to predict geomagnetic disturbances for Air Force space operations and to establish the feasibility of tracking interplanetary disturbances from the Sun to the Earth and beyond. The major subsystems of SMEI are an electronic Camera Assembly, a Data Handling Unit and interconnection harnesses. Each electronic Camera component consists of a baffle, radiator, bright object sensor, strongbox (CCD, mirrors and shutter) ... |
|
Reports by Corporate Author
