This trend is in qualitative agreement with a simple quantum simulation of the local density of states in a dome-shaped QD. An, J., Bae, J., Hong, S., Koo, B., Kim, Y., Guer, T. M., Prinz, F. B. Two barrier materials were selected based on barrier height: aluminum oxide as a high barrier material and zinc oxide as a low barrier material. Ryu, W., Min, S. W., Hammerick, K. E., Vyakarnam, M., Greco, R. S., Prinz, F. B., Fasching, R. J. Electrochemical impedance analysis of solid oxide fuel cell electrolyte using kinetic Monte Carlo technique. 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. High performance Bi-layered electrolytes via atomic layer deposition for solid oxide fuel cells. The flame reduction method has unique advantages of a high temperature (>1000 C), ultrafast heating rate, tunable reduction environment, and open-atmosphere operation, so it enables rapid formation of oxygen vacancies (less than one minute) without damaging the nanowire morphology and crystallinity and is even applicable to various metal oxides. We conclude, based on Hif2, that a gold electrode is approximately 14 times less efficient as an electron acceptor than FAD and that the mercaptopyridine SAM enhances electron transfer. Here we report successful demonstration of a thin-film three-dimensional (3-D) SOFC architecture achieving a peak power density of 1.3 W/cm(2) obtained at 450 C. Chang, Y. C., Saha, M., Prinz, F., Latombe, J. C., Pinilla, J. Prinz, F., B., Fasching, R., Keplinger, F., Hanreich, G., Jobst, G., Urban, G. Scalable rotary actuators with embedded Shape Memory Alloys, Skeletons for representation and reasoning in engineering applications. Mr. Singh is QuantumScapes Chief Executive Officer and Chairman of the Board of Directors. Motoyama, M., Fukunaka, Y., Ogata, Y. H., Prinz, F. B. Crabb, K. M., Park, J. S., Chao, C., Prinz, F. B. Nanopore Patterned Pt Array Electrodes for Triple Phase Boundary Study in Low Temperature SOFC. Solid oxide fuel cell with corrugated thin film electrolyte. Yttria-stabilized zirconia (YSZ) electrolyte membranes were surface modified by adding a 1 nm thin, high-yttria concentration YSZ film with the help of atomic layer deposition. A variety of metals can be chosen as the tip material. Prinz, F., B., Fasching, R., Aschauer, E., Jobst, G., Urban, G. THE ENGINEERING DESIGN RESEARCH-CENTER OF CARNEGIE-MELLON-UNIVERSITY. Lee, W., Dasgupta, N. P., Trejo, O., Lee, J., Hwang, J., Usui, T., Prinz, F. B. This paper describes the fabrication of scanning probes with single metal nanowires (NWs) at the probe tip. A sharp peak in the performance of sputtered platinum fuel cells at ultra-low platinum loading. In the future, arrays of micro-SOFCs with high power density may enable a range of mobile and portable power applications. O'Hayre, R., Braithwaite, D., Hermann, W., Lee, S. J., Fabian, T., Cha, S. W., Saito, Y., Prinz, F. B. Lead-time reduction through flexible routing: application to Shape Deposition Manufacturing, Metal embedded Fiber Bragg Grating sensors in layered manufacturing, Lateral ionic conduction in planar array fuel cells. O'Hayre, R., Barnett, D. M., Prinz, F. B. In 2018, Volkswagen invested $100 million in the company, becoming the largest shareholder. QuantumScape is a leader in developing next-generation solid-state lithium-metal batteries for electric vehicles. Adipose-derived stromal cells (ASCs) constitute a promising source of cells for regenerative medicine applications. Enhanced Step Coverage of TiO2 Deposited on High Aspect Ratio Surfaces by Plasma-Enhanced Atomic Layer Deposition. The sol-flame doping method not only preserves the morphology and crystallinity of the TiO2 NWs, but also allows fine control over the Co dopant profile by varying the concentration of Co precursor solution. Additionally, their galvanotactic response appears to share classic chemotactic signaling pathways that are involved in the migration of other cell types. The recent technique of transducing key transcription factors into unipotent cells (fibroblasts) to generate pluripotent stem cells (induced pluripotent stem cells [iPSCs]) has significantly changed the stem cell field. To increase the electrochemically active surface area, yttria-stabilized zirconia membranes with thickness of 70 nm were deposited onto prepatterned silicon substrates. Application of atomic layer deposition of platinum to solid oxide fuel cells. We found smaller values of the lowest available transition energies and an increased density of electronic states in the space between quantum dots with shorter interparticle spacing, indicating extension of carrier wave functions as a result of interparticle electronic coupling. Fritz B Prinz, Quantumscape Corp: Profile and Biography - Bloomberg Markets Bloomberg TV+ Bloomberg Markets Americas Bloomberg Markets Americas. Pt) are one of the main contributors to low-temperature (<500 C) fuel cell costs, significant efforts have been made to lower the noble metal loading in constructing fuel cell electrodes. . Kim, Y. The reactor was designed with respect to materials compatibility of all wetted components with H(2)S. A customized safety interlock system was developed to shut down the system in the event of toxic gas leakage, power outage, loss of building ventilation or compressed air pressure. . High aspect ratio and high breakdown strength metal-oxide capacitors. Dasgupta, N. P., Neubert, S., Lee, W., Trejo, O., Lee, J., Prinz, F. B. For precise control of the cell distribution within the microstructured scaffolds a high precision microsieve structure was designed to localize rat hepatocytes and human articular chondrocytes in the biodegradable polymers. Because noble metal catalysts (e.g. We found that oxygen column intensity is governed primarily by column occupancy rather than by static displacement of oxygen atoms. High Surface Area Density Nano Thin Film Solid Oxide Fuel Cells, Transient behaviour of magnetic micro-bead chains rotating in a fluid by external fields. QuantumScape was founded in 2010 to create a battery that doesn't make compromises and after a decade of hard work, we've built a technology that enables the fast charging, long-lasting and safer batteries required to power zero-emissions transportation. An approach to overcome this sluggish kinetics is by engineering the oxide surface with a lower oxygen incorporation barrier. For Pt clusters supported on HOPG with vacancy aggregations, this study shows a strong driving force for nucleation and a much enhanced tendency for particle ripening. 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 View details for DOI 10.1007/s40684-014-0025-0, View details for Web of Science ID 000340035500004. Processing and microstructures of fiber Bragg grating sensors embedded in stainless steel. The focus was on the development solid-state lithium-ion batteries, which are generally . Prinz, F., B., Rajagopalan, S., Pinilla et al., J., M. Medial axis transform (MAT) of general 2D shapes and 3D polyhedra for engineering applications. . Nickel, A., BARNETT, D., Link, G., Prinz, F. Reducing part: Deformation by inducing phase transformation. LIFETIME PREDICTIONS FOR A CERAMIC CUTTING-TOOL MATERIAL AT HIGH-TEMPERATURES. Exploring the local electronic structure and geometric arrangement of ALD Zn(O,S) buffer layers using X-ray absorption spectroscopy. 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. View details for Web of Science ID 000334990600047, View details for DOI 10.1016/j.ijhydene.2013.11.023, View details for Web of Science ID 000331920100022. 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. Kang, S., Johnston, James, P., Arima, T., Matsunaga, M., Tsuru, H., Prinz, Fritz, B. in Physics, a M.S. Mack, J. F., Van Stockum, P. B., Iwadate, H., Prinz, F. B. ALD for clean energy conversion, utilization, and storage. Such column-by-column quantification of defect concentration in functional materials can provide new insights that may lead to engineered grain boundaries designed for specific functionalities. Effects of size polydispersity on electron mobility in a two-dimensional quantum-dot superlattice. We show significant oxygen deficiency due to segregation of oxide-ion vacancies near the grain-boundary core with half-width < 0.6nm. Mr. Hettrich holds a B.A. This system affords easy AFM access and allows for maintenance of the cells in a well-defined chemical environment, which sustains their biological activity. We have built a combined scanning tunneling microscope-atomic layer deposition (STM-ALD) tool that performs in situ imaging of deposition. Specifically, quantum confinement effects on the band gap of PbS quantum wells were explored by controlling the PbS film thickness and potential barrier height. Cha, S. W., Lee, S. J., Park, Y. I., Prinz, F. B. To modulate the release of the devices, the dimension and location of the micro-orifices were varied and the responding in vitro release response of tetracycline was monitored over 2 weeks. Phuthong, W., Huang, Z., Wittkopp, T. M., Sznee, K., Heinnickel, M. L., Dekker, J. P., Frese, R. N., Prinz, F. B., Grossman, A. R. Grain boundary blocking of ionic conductivity in nanocrystalline yttria-doped ceria thin films. Xu, S., Thian, D., Wang, S., Wang, Y., Prinz, F. B. Nanostructuring Materials for Solar-to-Hydrogen Conversion, MEMS-based thin-film solid-oxide fuel cells. Structural and compositional analysis of solid oxide fuel cell electrolytes using transmission electron microscopy. Brennan, T. P., Trejo, O., Roelofs, K. E., Xu, J., Prinz, F. B., Bent, S. F. STANFORD ENGINEERS DEVELOP FUEL CELL THAT CAN DELIVER RECORD POWER-PER-SQUARE INCH AT RECORD-LOW TEMPERATURES (http://engineering.stanford.edu/research-profile/stanford-engineers-develop-fuel-cell-can-deliver-record-power-square-inch-record-lo). Prinz, F., B., Fasching, R., Jobst, G., Keplinger, F., Aschauer, E., Urban, G. Finger, S., Fox, M. S., Prinz, F. B., RINDERLE, J. R. Miniaturized multi-enzyme biosensors integrated with pH-Sensors on flexible polymer carriers for in vivo applications. 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. O'Hayre, R., Lee, S. J., Cha, S. W., Prinz, F. B. Capacitive blade tip clearance measurements for a micro gas turbine. Motoyama, M., Dasgupta, N., P., Prinz, F., B. Geometric Effects of Triple Phase Boundary in Solid Oxide Fuel Cells. Frank Blome Independent Director. 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. Provine, J., Schindler, P., Torgersen, J., Kim, H. J., Karnthaler, H., Prinz, F. B. Quantifying Geometric Strain at the PbS QD-TiO2 Anode Interface and Its Effect on Electronic Structures. Hammerick, K. E., James, A. W., Huang, Z., Prinz, F. B., Longaker, M. T. Kinetic Monte Carlo simulations of oxygen vacancy diffusion in a solid electrolyte: Computing the electrical impedance using the fluctuation-dissipation theorem, Sputtered Pt-Ru Alloys as Catalysts for Highly Concentrated Methanol Oxidation. That has not stopped the company from forging ahead with a. Active Water Management for PEM Fuel Cells. Prior to joining QuantumScape, he was a Research Associate at Stanford University from June 2008 to January 2011. Dadlani, A. L., Trejo, O., Acharya, S., Torgersen, J., Petousis, I., Nordlund, D., Sarangi, R., Schindler, P., Prinz, F. B. Park, J. S., Kim, Y. Damage in yttria-stabilized zirconia by Xe irradiation measured by X-ray diffraction, The triple phase boundary - A mathematical model and experimental investigations for fuel cells. Pornprasertsuk, R., Kosasang, O., Somroop, K., Jinawath, S., Prinz, F. B. 8-K 001-39345 10.11 December 2, 2020 4.7 QuantumScape Corporation 2020 Employee Stock Purchase Plan 8-K 001 . This years Innovation Summit featured finalists selected by the Earthshot council in addition to panelist speakers from heads of state, grassroots organizations and tech leaders. Shim, J. H., Kang, S., Cha, S., Lee, W., Kim, Y. Park, Y. I., Saito, Y., Pornprasertsuk, R., Cheng, J., Cha, S. W., Prinz, F. B.
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