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A $43 billion lab. Laser-SNMS depth profiling of thin film multilayers: study of a Pt-Ti biosensor for glucose detection. View details for DOI 10.1088/0957-4484/21/48/485402, View details for Web of Science ID 000284053500011, View details for Web of Science ID 000281891900031, View details for Web of Science ID 000280855100032, View details for Web of Science ID 000276554800012. A new selection method for atomic layer deposition (ALD) or chemical vapor deposition (CVD) precursors is proposed and tested. Gurumoorthy, B., Kirchner, H. O., Prinz, F. B., Sinclair, G. B. Optimal process conditions were identified in order to avoid any unwanted change in material properties, such as crystallinity and scaffold strength, that have a direct impact on the degradation speed and physical integrity of the constructed scaffolds. In 2018, Volkswagen invested $100 million in the company, becoming the largest shareholder. Buie, C., R., Posner, J., Fabian, T., Cha, S., W., Kim, D., Prinz, F., B. Micro-structured Biodegradable Polymers Embedded with Cells and Drugs for Tissue Engineering and Drug Delivery. Mr. McCarthy holds a B.A. Jee, Y., Cho, G. Y., An, J., Kim, H., Son, J., Lee, J., Prinz, F. B., Lee, M. H., Cha, S. W. Electrodeposition and Behavior of Single Metal Nanowire Probes, Proton incorporation in yttria-stabilized zirconia during atomic layer deposition. The proposed devices can be further miniaturized and used for the delivery of multiple therapeutic agents at the individual releasing schedules. High aspect ratio and high breakdown strength metal-oxide capacitors. The diketonate precursors have stronger bonds to the metals than the Cp precursors, but weaker bonds within the ligand, explaining the carbon contamination found in experimentally grown films. It is illegal for insiders to make trades in their companies based on specific, non-public information. We attribute the superior cell performance to significant reduction in both the ohmic and the polarization losses due to the combined effects of employing an ultrathin film electrolyte, enhancement of effective area by 3-D architecture, and superior catalytic activity by the ceria-based interlayer at the cathode. Defective HOPG supports are modeled by density functional theory (DFT) calculations that confirm and explain the above experimental results. This system was successfully used to measure light-dependent oxidation currents of a few pico-amperes from the green alga Chlamydomonas reinhardtii. in Environment and Resources from Stanford University. View details for Web of Science ID 000266093700034, View details for Web of Science ID 000268803300024, View details for Web of Science ID 000337731900001, View details for Web of Science ID 000337724700103, View details for Web of Science ID 000337724700111, View details for Web of Science ID 000337731900031, View details for Web of Science ID 000280345900490, View details for Web of Science ID 000265837900031, View details for Web of Science ID 000280345900456, View details for Web of Science ID 000271218900019, View details for Web of Science ID 000270133400050, View details for Web of Science ID 000268405400043, View details for Web of Science ID 000280345900274, View details for DOI 10.1016/j.ssi.2007.12.100, View details for Web of Science ID 000259276200058. Prinz, F., B., Petousis, I., Homburg, E., Derks, R., Dietzel, A. Fabrication of an electrochemical tip-probe system embedded in SiNx-cantilevers for simultaneous SECM and AFM analysis, Geometric scale effect of flow channels on performance of fuel cells. Ultra-sharp nano-probes and customized atomic force microscopy (AFM) have previously been developed in our laboratory for in situ sub-cellular probing of electrochemical phenomena in living plant cells during their photosynthesis. Metal Alloy Catalysts with Pt Surface Coating by Atomic Layer Deposition for Intermediate Temperature Ceramic Fuel Cells. Prinz, F., B., Weiss, L., Amon, C., Beuth, J. CNC Cutter Path Generation in Shape Deposition Manufacturing. Efficiency enhancement of solid-state PbS quantum dot-sensitized solar cells with Al2O3 barrier layer. from Vanderbilt University Law School. An, J., Kim, Y. Characterizations of the TiO2:Co NWs show that Co dopants exhibit 2+ oxidation state and substitutionally occupy Ti sites in the TiO2 lattice. Finger, S., Stivoric, J., Amon, C., Gursoz, L., Prinz, F., Siewiorek, D., Smailagic, A., Weiss, L. Rapid design and manufacture of wearable computers. In addition, oxide ion conductivity at a low temperature range (100-200 degrees C) was obtained, and the activation energy for diffusion in gadolinia-doped ceria (GDC) was calculated as approximately 0.56 eV, implying that the majority of oxide ion vacancies diffuse on the surface rather than inside the bulk of the electrolyte. A variety of metals can be chosen as the tip material. Atomic Layer Deposition of Lead Sulfide Quantum Dots on Nanowire Surfaces. Dasgupta, N. P., Walch, S. P., Prinz, F. B. Huang, H., Shim, J., H., Chao, C., C., Pornprasertsuk, R., Sugawara, M., Gr, T., M., Prinz, F. B. In-Plane Conductivities of Atomic Layer Deposited Yttria-Stabilized Zirconia Electrolytes for Solid Oxide Fuel Cells. Material strength in polymer shape deposition manufacturing, INTEGRATED DESIGN AND RAPID MANUFACTURING OVER THE INTERNET. The Earthshot Prize 2022 is a global prize designed to incentivize change and help to repair our planet by awarding five winners each year for their contributions to environmentalism. QuantumScape, the leading developer of next-generation solid-state batteries for electric vehicles, listed today on the NYSE. The Co dopant concentration significantly affects the oxygen evolution reaction (OER) activity of TiO2:Co NWs, and the TiO2:Co NWs with 12 at% of Co on the surface show the highest OER activity with a 0.76 V reduction of the overpotential with respect to undoped TiO2 NWs. Obtaining high power density at low operating temperatures has been an ongoing challenge in solid oxide fuel cells (SOFC), which are efficient engines to generate electrical energy from fuels. B., Park, J. S., Guer, T. M., Prinz, F. B. Previous studies of osteogenic potential in ASCs have focused on chemicals, growth factors, and mechanical stimuli. Insight and analysis of top stories from our award winning magazine "Bloomberg Businessweek". O'Hayre, R., Fabian, T., Litster, S., Prinz, F., B., Santiago, J., G. Biodegradable Micro-Fluidic Sheet-Devices for Programmed Drug Release. Impact of Accompanying Hydrogen Generation on Metal Nanotube Electrodeposition. Experimentally, we find that Pt supported by N-HOPG is more disperse, more catalytically active and suffers less particle ripening than native HOPG, while Pt supported on Ar-irradiated HOPG is slightly more active but ripens more than Pt on native HOPG. Area-selective atomic layer deposition (ALD) of lead sulfide (PbS) was achieved on octadecyltrichlorosilane (ODTS)-patterned silicon substrates. Shim, J. H., Jiang, X., Bent, S., Prinz, F. B. Usui, T., Dasgupta, N., P., Jiang, X., Lee, W., Prinz, F., B. Pt-N-HOPG shows modified electronic structure of the Pt catalyst and increased activity towards oxygen. DEMES, G. H., Fenves, S. J., GROSSMANN, I. E., Hendrickson, C. T., Mitchell, T. M., Prinz, F. B., Siewiorek, D. P., Subrahmanian, E., Talukdar, S., Westerberg, A. W. Amon, C., Beuth, J., Kirchner, H., Merz, R., Prinz, F., Schmaltz, K. Electrochemical thin-film carbondioxide sensors on novel polymer membrane system for in vitro and in vivo applications. In the case of tmhd and Cp precursors, the energy required to break bonds in the precursor ligand was studied to evaluate the most likely mechanism of carbon incorporation into the film. Trends for Ba and Sr followed each other closely, reflecting the similar chemistry among alkaline earth metals. Significantly, we show that flame reduction greatly improves the saturation photocurrent densities of TiO2 nanowires (2.7 times higher), -Fe2O3 nanowires (9.4 times higher), ZnO nanowires (2.0 times higher), and BiVO4 thin film (4.3 times higher) in comparison to untreated control samples for PEC water-splitting applications. Fessler, J., Nickel, A., Link, G., Prinz, F., FUSSELL, P. The Compact Graph Format: An Interchange Standard for Solid Freeform Fabrication. Jung, H. J., Dasgupta, N. P., Van Stockum, P. B., Koh, A. L., Sinclair, R., Prinz, F. B. Tim Holme, and Fritz B. Prinz in May 2010 and is . Atomic Layer Deposition of Al-doped ZnO Films: Effect of Grain Orientation on Conductivity. Ryu, W., Fasching, R. J., Vyakarnam, M., Greco, R. S., Prinz, F. B. Product Solid-state battery A low temperature micro solid oxide fuel cell with corrugated electrolyte membrane was developed and tested. Direct water removal in gas diffusion layer of porton exchnage membrane fuel cells by a flexible electroosmotic pump. Nickel, A., BARNETT, D., Link, G., Prinz, F. Reducing part: Deformation by inducing phase transformation. Highly oriented pyrolytic graphite (HOPG) implanted with N, Ar and B is studied as a support for platinum nanoparticle catalysts for fuel cells. We have carried out calculations of the electronic structure of ferredoxin and of the electronic coupling matrix element Hif for electron transfer from reduced ferredoxin to flavin adenine dinucleotide (FAD) and to cluster models of the Au111 surface and a Au111 surface with a mercaptopyridene self-assembled monolayer (SAM). Prinz, F., B., Fasching, R., Olcaytug, F., Schalko, J., Ebel, H., Gazicki, M. Layered manufacturing material issues for SDM of polymers and ceramics. Park, J., S., Kang, S., K., Gr, T., M., Prinz, F., B. Improving solid oxide fuel cells with yttria-doped ceria interlayers by atomic layer deposition. What is. Also, individual contributions both from oxygen column occupancy and the static displacement of oxygen atoms due to occupancy change to the observed column intensities of TEM images were systematically investigated using HRTEM simulation. Liu, H. C., Lee, S., Kang, S., Edwards, C. F., Prinz, F. B. AC Impedance Investigation of Transport Phenomena in Micro Flow Channels in Fuel Cells. Ms. Fong holds a B.S. QuantumScape was formed in 2010 by Jagdeep Singh, Tim Holme and Professor Fritz Prinz from Stanford University. We present atomic-scale imaging of oxygen columns and show quantitative analysis on the occupancy of the columns in yttria-stabilized zirconia (YSZ) using aberration-corrected TEM operated under the negative Cs condition. Fasching, R., Ryu, W., Bai, S., Park, J., Fabian, T., Moseley, J., Grossman, A., Prinz, F. Ionic conduction in nanoscale films of yttrium-doped barium zirconate, Microfabrication technology of biodegradable polymers for interconnecting microstructures. A CAD integration framework for designing devices with atomic scale resolution. Solid Oxide Fuel Cells with Atomic Layer Deposited Platinum Catalyst, Geometric Effects at Triple Phase Boundary in Solid Oxide Fuel Cells. Lee, W., Jung, H. J., Lee, M. H., Kim, Y., Park, J. S., Sinclair, R., Prinz, F. B. Nanoscale membrane electrolyte array for solid oxide fuel cells, Enhanced oxygen exchange and incorporation at surface grain boundaries on an oxide ion conductor. Motoyama, M., Dasgupta, N., P., Prinz, F., B. Geometric Effects of Triple Phase Boundary in Solid Oxide Fuel Cells. Cha, S. W., Fabian, T., Posner, J., BUIE, C., Kim, D. J., Prinz, F. B., Eaton, J. K., Santiago, J. Interconnected Biodegradable Polymers in Sub-Micron Precision, 3D Multi-layered Micro-fabricated Tissue Scaffolds of Biodegradable Polymers. To lower the SOFC operating temperature, we fabricated a corrugated thin-film electrolyte membrane by nanosphere lithography and atomic layer deposition to reduce the polarization and ohmic losses at low temperatures. Prinz, F., B., Fasching, R., Kohl, F., Urban, G., Jobst, G., Keplinger, F. NEXT GENERATION MANUFACTURING TASK PLANNER FOR ROBOTIC ARC-WELDING. However, three-dimensional (3-D) fabrication of tissue scaffolds containing complex microarchitectures still remains a challenge. Share Your Design Ideas, New JerseysMurphy Defends $10 Billion Rainy Day Fund as States Economy Slows, What Led to Europe's Deadliest Train Crash in a Decade, This Week in Crypto: Ukraine War, Marathon Digital, FTX, Chief Scientific Advisor/Co-Founder, Quantumscape Corp. To increase the electrochemically active surface area, yttria-stabilized zirconia membranes with thickness of 70 nm were deposited onto prepatterned silicon substrates. Tafel plots and the fitted impedance data suggest that the charge transfer coefficient of interlayered SOFCs was 1.25 times higher, and the electrode/interfacial activation energy was reduced from 0.85 to 0.76 eV. There are numerous sources of bioenergy that are generated by photosynthetic processes, for example, lipids, alcohols, hydrogen, and polysaccharides. We investigated the capability of ODTS self-assembled monolayers (SAMs) to deactivate the ALD PbS surface reactions as a function of dipping time in ODTS solution. Through a combination of analyses and experiments, we provide evidence that this behavior is primarily due to an excess of oxygen in the films. Rapid and Controllable Flame Reduction of TiO2 Nanowires for Enhanced Solar Water-Splitting. These cells have great promise for many clinical applications, including that of regenerative medicine. The instrument can be used as an observation tool to monitor the initial growth phases of ALD in situ, as well as a nanofabrication tool by applying an electric field with the tip to laterally pattern deposition. View details for Web of Science ID 000288061500003, View details for DOI 10.1103/PhysRevB.83.052301, View details for Web of Science ID 000287358900001. Prinz, F., B., Zhou, Y., Pasquarelli, R., Holme, T., Berry, J., Ginley, D. ATOMIC LAYER DEPOSITION OF PbS-ZnS QUANTUM WELLS FOR HIGH-EFFICIENCY SOLAR CELLS. On optimizing the dopant concentration at the surface of single-crystal YSZ, a 5-fold increase in the oxygen surface exchange coefficient of the electrolyte was observed using isotopic oxygen exchange experiments coupled with secondary ion mass spectrometer measurements. Lee, W., Dasgupta, N. P., Jung, H. J., Lee, J., Sinclair, R., Prinz, F. B. Frank Blome Independent Director. Acharya, S., Torgersen, J., Kim, Y., Park, J., Schindler, P., Dadlani, A. L., Winterkorn, M., Xu, S., Walch, S. P., Usui, T., Schildknecht, C., Prinz, F. B. The company quickly gained major investors' attention. FRITZ PRINZ Founder & Chief Scientific Advisor (Board Member) Chair, Mechanical Engineering, Stanford Professor, Materials Science, Stanford PhD, Physics, University of Vienna DR. TIM HOLME Founder & Chief Technology Officer Research Associate, Stanford Ph.D. & MS Mechanical Engineering, Stanford BS Physics, Stanford DR. MOHIT SINGH A quantum simulation verified both trends and illustrated the wave function extension effect. The experimental results support the predictions based upon calculations: PrMe(4)Cp and Me(5)Cp precursors are expected to be the best precursors among those studied for Ba and Sr film growth. Maximum power densities of the corrugated fuel cells of 677 mW/cm2 and 861 mW/cm2 were obtained at 400 and 450 degrees C, respectively. View details for Web of Science ID 000270670500043, View details for Web of Science ID 000269485300008, View details for Web of Science ID 000268174400038. B., Guer, T. M., Kang, S., Jung, H., Sinclair, R., Prinz, F. B. Cheng, Y. L., Stampfl, J., Leitgeb, R., Prinz, F. B. We found that 180 cycles or approximately 10 nm of ALD Pt, with a Pt loading of only 0.02 mg cm(-2), were sufficient for the purpose of a catalytic cathode. Stampfl, J., Leitgeb, R., Cheng, Y., L., Prinz, F., B. Huang, H., Shim, J. H., Chao, C., Pornprasertsuk, R., Sugawara, M., Guer, T. M., Prinz, F. B. The key to our technology is a patented solid ceramic electrolyte separator, the material that keeps the anode and cathode from touching and moves lithium ions from one side of the battery to the other during charge and discharge. The magnitude of Hif is large enough for these systems that the weak coupling limit approximations may no longer be valid. Its resolution is limited by the finite probe size and the long-range characteristics of electrostatic forces. The use of H(2)S in an ALD reactor requires special attention to safety issues due to its highly toxic, flammable, and corrosive nature. View details for Web of Science ID 000276969700113. Fuel cell performance of the corrugated electrolyte membranes released from silicon substrate showed an increase of power density relative to membranes with planar electrolytes. Crawford, W. S., Cappelli, M. A., Prinz, F. B. Photoluminescence measurements on the quantum dot/nanowire composites show a blue shift when the number of ALD cycles is decreased, suggesting a route to fabricate unique three-dimensional nanostructured devices such as solar cells. Mack, J. F., Van Stockum, P. B., Iwadate, H., Prinz, F. B. ALD for clean energy conversion, utilization, and storage. We used atomic force microscopy as a tool to determine stem cell stiffness, and hence differences in material properties between cells. QuantumScape Corporation is a U.S.-based technology development company focused on solid-state technology for the EV industry. Bae, J., Hong, S., Koo, B., An, J., Prinz, F. B., Kim, Y. Pinilla, J., M., Kao, J., H., Prinz, F., B. B., Park, J. S., Guer, T. M., Prinz, F. B., Chao, C., An, J. It took five years of experimentation to find it, Singh said, and five more to . Berkeley and a M.S. Fasching, R. J., Tao, Y., Hammerick, K., Prinz, F. B. View details for DOI 10.1016/j.biomaterials.2006.11.002, View details for Web of Science ID 000243219000028, View details for DOI 10.1016/j.ssi.2006.12.016, View details for Web of Science ID 000245616100005, View details for Web of Science ID 000242538600013, View details for Web of Science ID 000250953500015, View details for Web of Science ID 000248984600013, View details for Web of Science ID 000254563600177, View details for Web of Science ID 000246435400008, View details for DOI 10.1109/JMEMS.2006.883566, View details for Web of Science ID 000242983300005, View details for DOI 10.1016/j.jpowsour.2006.03.021, View details for Web of Science ID 000241412000026, View details for DOI 10.1016/j.jpowsour.2006.04.123, View details for Web of Science ID 000241412000021, View details for DOI 10.1016/j.jpowsour.2006.03.054, View details for Web of Science ID 000241412000024, View details for Web of Science ID 000241056900097, View details for DOI 10.1088/0957-4484/17/15/019, View details 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A1994BA72M00428, View details for Web of Science ID A1994BC13M00055, View details for Web of Science ID A1993KZ54500002, View details for Web of Science ID A1992JQ08300002, View details for Web of Science ID A1992HQ43700011, View details for Web of Science ID A1991BT14J00183, View details for Web of Science ID A1988N430000001, View details for Web of Science ID A1987H820300025, View details for Web of Science ID A1987L656000004, Sir Christopher Hinton Lecture, Royal Academy of Engineering (1991), Engineer of the Year, American Society of Mechanical Engineers, Pittsburgh, PA Section (1991 - 1992), Corresponding member, Austrian Academy of Science, Vienna, Austria (1996), Award for Excellence, Literati Club (2002), Most Outstanding Paper in the 2001 volume, Rapid Prototyping Journal (2002), The AM Strickland Prize for Best Paper in 2005, The Institution of Mechanical Engineers, London, UK (2005), Tedori-Callinan Lecture, University of Pennsylvania (2006), Fellow, American Association for the Advancement of Science (AAAS) (2007), Woodruff Colloquium in the Theme of Energy, Georgia Institute of Technology, Atlanta, GA (2008), Munushian Lecture, University of Southern California (2009), PhD, University of Vienna, Physics (1975), Department: Materials Science and Engineering, NPL Affiliate Program Manager, NPL Administrator, Plasma-enhanced atomic layer deposition of tungsten nitride. To investigate differences between two iPS cell lines (fibroblast-iPSC and hASC-iPSC), and also the gold standard human embryonic stem cell, we looked at cell stiffness as a possible indicator of cell differentiation-potential differences. Park, J., S., Kim, Y., B., An, J., Shim, J., H., Gr, T., M., Prinz, F., B. Ultra-Thin Catalytic Electrodes for LT-SOFC, Editors Choice (Materials Science: 3D Lowers T), Three-Dimensional Nanostructured Bilayer Solid Oxide Fuel Cell with 1.3 W/cm2 at 450C.