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High performance Bi-layered electrolytes via atomic layer deposition for solid oxide fuel cells. Usui, T., Dasgupta, N. P., Jiang, X., Lee, W., Prinz, F. B. A new selection method for atomic layer deposition (ALD) or chemical vapor deposition (CVD) precursors is proposed and tested. View details for Web of Science ID 000317317500017. There are numerous sources of bioenergy that are generated by photosynthetic processes, for example, lipids, alcohols, hydrogen, and polysaccharides. Amon, C., H., Merz, R., Prinz, F., B., Schmaltz, K., S. Merz, R., Prinz, F., B., Ramaswami, K., Terk, M., Weiss, L. Two types of electrochemical thin-film pCO2-sensors for in vitro and in vivo applications. Lee, W., Dasgupta, N. P., Jung, H. J., Lee, J., Sinclair, R., Prinz, F. B. Amon, C. H., Beuth, J. L., Weiss, L. E., Merz, R., Prinz, F. B. Dasgupta, N., P., Walch, S., P., Prinz, F., B. Reversible oxidation of spinach ferredoxin at surface-modified electrodes. The company was formed to address the most prevalent issue in the EV space, battery . Mechanical and thermal expansion behavior of laser deposited metal matrix composites of Invar and TiC, Electro-discharge machining of mesoscopic parts with electroplated copper and hot-pressed silver tungsten electrodes. The dielectric constant increased from 51 (as-deposited) to 122 (plasma-treated), and the leakage current density decreased by 1 order of magnitude. An, J., Kim, Y., Park, J., Gr, T. M., Prinz, F. B. 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. Silver Nanomesh as a Cathode for Solid Oxide Fuel Cells. Thermal stabilities of nanoporous metallic electrodes at elevated temperatures. Because noble metal catalysts (e.g. Holme, T., Zhou, Y., Pasquarelli, R., O'Hayre, R. Interpretation of Low Temperature Solid Oxide Fuel Cell Electrochemical Impedance Spectra. Cooper, A. G., Kang, S., Kietzman, J. W., Prinz, F. B., Lombardi, J. L., Weiss, L. Rapid tooling die cast inserts using shape deposition manufacturing. in Economics from Pomona College, a M.B.A. from Stanford Graduate School of Business, and a M.S. MD simulations of the interaction of ferredoxin and protonated pyridine within a water solvation box indicate that the protonated pyridine does strongly orient the ferredoxin, favoring electron transfer as compared to a bare gold surface, where we speculate the orientation of the ferredoxin may be more random. Kao, J. H., HEMMERLE, J. S., Prinz, F. B. Entwicklung elektrochemischer Dnnschicht CO2-Sensoren, Grundlagen und Technologie elektronischer Bauelemente. Stanford Scientists Create a Billionaire Factory. Employing 50 Hz direct current electric fields in concert with and without osteogenic factors, we demonstrated increased early osteoblast-specific markers. Cha, S. W., O'Hayre, R., Lee, S. J., Saito, Y., Prinz, F. B. In addition, little attention has been paid to the issue of how to incorporate cells within 3-D tissue scaffolds that contain precisely engineered architectures. 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 It took five years of experimentation to find it, Singh said, and five more to . Such analyses have been performed for inhomogeneities of various shapes and sizes, for different tip-sample separations and tip geometries, for different applied voltages, and for different media (e.g., vacuum or water) in which the experiment is performed. QuantumScape developed the industry's first anode-less cell design, which delivers high energy density while lowering material costs and simplifying manufacturing. This analysis is for one-year following each trade, and the results are theoretical . Engineering model of a passive planar air breathing fuel cell cathode. . 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. Lee, W., Chao, C., Jiang, X., Hwang, J., Bent, S. F., Prinz, F. B. Pt-Ru Alloys Deposited by Sputtering as Catalysts for Methanol Oxidation, Biodegradable micro-osmotic pump for long-term and controlled release of basic fibroblast growth factor. Product Solid-state battery On the other hand, for samples with strip-and disk-shaped surface potential inhomogeneities, we have obtained quantitative expressions for the detectability size requirements as a function of experimental conditions for both AM-and FM-EFMs, which suggest that a larger tip radius of curvature is moderately favored for detecting the presence of such inhomogeneities. View details for DOI 10.1016/j.jconrel.2007.08.024. Development of portable fuel cell arrays with printed-circuit technology. Other executives include Fritz Prinz, Founder & Chief Scientific Advisor, Board Member; Timothy Holme, Founder & Chief Technology Officer and 15 others. However, bFGF is degraded quickly in vivo and difficulty of controlling the dose level impedes its effective use in angiogenesis and tissue regeneration. A sharp peak in the performance of sputtered platinum fuel cells at ultra-low platinum loading. Kim, Y. QuantumScape Corporation 2020 Equity Incentive Plan Form of Restricted Stock Unit Agreement 8-K 001-39345 10.10 December 2, 2020 4.6 QuantumScape Corporation 2020 Equity Incentive Plan Form of Restricted Stock Agreement. View details for Web of Science ID 000280708400041, View details for Web of Science ID 000272387200026, View details for Web of Science ID 000277260200058, View details for Web of Science ID 000272387200042, View details for Web of Science ID 000280348300008, View details for Web of Science ID 000277260200023. From a living algal cell, Chlamydomonas reinhardtii, photosynthetic electrons (1.2 pA at 6000 mA/m(2)) were directly extracted without a mediator electron carrier by inserting a nanoelectrode into the algal chloroplast and applying an overvoltage. Micro-holes (10-100 microm), micro-channels, and micro-cavities were all created by micro-molding. The reaction mechanism was investigated using density functional theory (DFT), which showed that the initial ALD half-reaction is energetically unfavorable on a methyl-terminated SAM surface. Fabian, T., O'Hayre, R., Litster, S., Prinz, F., B., Santiago, J., G. MEMS Fabrication and Performances of Nano-Thin Solid Oxide Fuel Cell. Trends for Ba and Sr followed each other closely, reflecting the similar chemistry among alkaline earth metals. Endogenous electric fields play an important role in embryogenesis, regeneration, and wound repair and previous studies have shown that many populations of cells, leukocytes, fibroblasts, epithelial cells, and endothelial cells, exhibit directed migration in response to electric fields. View details for DOI 10.1089/ten.tea.2010.0211, View details for Web of Science ID 000286661600023, View details for PubMedCentralID PMC3052278, View details for Web of Science ID 000300770102019, View details for Web of Science ID 000305937200034, View details for Web of Science ID 000300615700012, View details for Web of Science ID 000295626000032, View details for Web of Science ID 000292978600048, View details for DOI 10.1016/j.scriptamat.2010.08.057, View details for Web of Science ID 000284453300007, View details for Web of Science ID 000300770105038, View details for Web of Science ID 000295841200168, View details for Web of Science ID 000309464600012. 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. For more information, please visit www.quantumscape.com . In vivo electrochemical impedance measurement on single cell membrane, Effect of crystallinity on proton conductivity in yttrium-doped barium zirconate thin films. Comparison of the experiments to the simulated results identified that the variation of micro-geometry influenced also the volume-dependent degradation rate and induced the osmotic pressure. The release of bFGF was regulated at 40 ng/day for four weeks; bioactivity was assessed by monitoring the growth of 3T3 fibroblasts. Buie, C. R., Posner, J. D., Fabian, T., Cha, S., Kim, D., Prinz, F. B., Eaton, J. K., Santiago, J. G. Electrochemical impedance investigation of flooding in micro-flow channels for proton exchange membrane fuel cells. Cheng, Y. L., Stampfl, J., Leitgeb, R., Prinz, F. B. This special Bloomberg program highlights the event's biggest interviews and news makers. This discovery enables entirely new categories of TiO2 devices and applications, and unlocks the potential to improve existing ones. Stampfl, J., Liu, H. C., Nam, S. W., Sakamoto, K., Tsuru, H., KANG, S. Y., Cooper, A. G., Nickel, A., Prinz, F. B. 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. Privacy Policy | Terms of Use 2022 QuantumScape Corporation1730 Technology Drive, San Jose, CA 95110info@quantumscape.com. Insiders are officers, directors, or significant investors in a company. In the future, arrays of micro-SOFCs with high power density may enable a range of mobile and portable power applications. Subnanometer-resolved local electron energy structure was measured in PbS quantum dot superlattice arrays using valence electron energy loss spectroscopy with scanning transmission electron microscopy. Cai, L., Cho, I. S., Logar, M., Mehta, A., He, J., Lee, C. H., Rao, P. M., Feng, Y., Wilcox, J., Prinz, F. B., Zheng, X. in Mechanical Engineering, and a Ph.D. in Mechanical Engineering from Stanford University. The OMFC was further studied using simulation packages for optimal design conditions. Active water management at the cathode of a planar air-breathing polymer electrolyte membrane fuel cell using an electroosmotic pump. Parquia Santa Rita de Cssia in So Paulo, reviews by real people. Effects of Ion Irradiation on the Performance of Solid Oxide Fuel Cells. Buie, C. R., Posner, J. D., Fabian, T., Cha, S., Prinz, F. B., Eaton, J. K., Santiago, J. G. A microfabricated intravascular ultrasound scanner for intravascular interventions. The energy required to break bonds between the metal atom and the ligands was calculated to find which precursors react most readily. Kim, Y. Prior to joining the company, Ms. Fong served as the Vice President of Global Human Resources at PDF Solutions (NASDAQ: PDFS), a semiconductor SAAS company. The quantitative exploration of the lower limits of Pt cocatalyst loading reported here, and its application to high-surface-area NW photoelectrodes, establish a general approach for minimizing the cost of precious-metal cocatalysts for efficient and affordable solar-to-fuel applications. Application of atomic layer deposition of platinum to solid oxide fuel cells. Structural and compositional analysis of solid oxide fuel cell electrolytes using transmission electron microscopy. An, J., Kim, Y., Guer, T. M., Prinz, F. B. Liu, H. C., Tsuru, H., Cooper, A. G., Prinz, F. B. Capacitive sensor for active tip clearance control in a palm-sized gas turbine generator, Gas-tight alumina films on nanoporous substrates through oxidation of sputtered metal films. View details for PubMedCentralID PMC3775093. Sharon, J. These cells have great promise for many clinical applications, including that of regenerative medicine. Dasgupta, N. P., Xu, S., Jung, H. J., Iancu, A., Fasching, R., Sinclair, R., Prinz, F. B. Ab initio kinetic Monte Carlo model of ionic conduction in bulk yttria-stabilized zirconia, Improved oxygen surface exchange kinetics at grain boundaries in nanocrystalline yttria-stabilized zirconia. Two barrier materials were selected based on barrier height: aluminum oxide as a high barrier material and zinc oxide as a low barrier material. An, J., Bae, J., Hong, S., Koo, B., Kim, Y., Guer, T. M., Prinz, F. B. View details for DOI 10.1007/s10529-011-0604-x, View details for Web of Science ID 000293752000025, View details for DOI 10.1016/j.mee.2010.12.006, View details for Web of Science ID 000293663400191. Fabian, T., O'Hayre, R., Prinz, F. B., Santiago, J. G. AFM/EC nano probing of single cells and organelles. Komadina, J., Kim, Y. In: Micro Power Sources. Cooper, A., G., Kang, S., Stampfl, J., Prinz, F., B. Dasgupta, N. P., Neubert, S., Lee, W., Trejo, O., Lee, J., Prinz, F. B. -C., Kao, J. Cho, I. S., Logar, M., Lee, C. H., Cai, L., Prinz, F. B., Zheng, X. Nanostructuring Methods for Enhancing Light Absorption Rate of Si-Based Photovoltaic Devices: A Review. Prinz, F., B., Fasching, R., Keplinger, F., Aschauer, E., Urban, G. Miniaturisierte Dnnschicht-Blutgassensoren fr die in vivo und ex vivo Diagnostik. . The Air/Platinum/Nafion triple-phase boundary: Characteristics, scaling, and implications for fuel cells, Ion irradiation effects in solid oxide fuel cell electrolytes. However, this AFM-based electrochemical probing still has numerous engineering challenges such as immobilization of the live cells, compatibility of the immobilization procedure with AFM manipulation of the probe, maintenance of biological activity of the cells for an extended time while performing the measurements, and minimization of electrochemical noise. Motoyama, M., Chao, C., Guer, T. M., Prinz, F. B. Epitaxial and Polycrystalline Gadolinia-Doped Ceria Cathode Interlayers for Low Temperature Solid Oxide Fuel Cells. Huang, H., Gur, T. M., Saito, Y., Prinz, F. Geometric artefact suppressed surface potential measurements, Nanoscale electrochemical probes for single cell analysis. Kim, Y., Provine, J., Waich, S. P., Park, J., Phuthong, W., Dadlani, A. L., Kim, H., Schindier, P., Kim, K., Prinz, F. B. 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. A microfabricated direct methanol fuel cell with integrated electroosmotic pump. The calculations attribute the catalytic activity changes primarily to changes in the workfunction and secondarily to the d-band structure of supported Pt particles. Prinz, F., B., Weiss, L., Amon, C., Beuth, J. CNC Cutter Path Generation in Shape Deposition Manufacturing. Evidence of Proton Transport in Atomic Layer Deposited Yttria-Stabilized Zirconia Films. ALD of lead sulfide (PbS) and zinc sulfide (ZnS) were demonstrated with no chemical contamination or detectable release of H(2)S. View details for Web of Science ID 000277243100039, View details for DOI 10.3938/jkps.56.1215, View details for Web of Science ID 000276783000035, View details for DOI 10.1016/j.actamat.2009.12.005, View details for Web of Science ID 000275511700028. Our innovative battery cell technology can store energy more efficiently and reliably than today's lithium-ion batteries. Nickel, A., BARNETT, D., Link, G., Prinz, F. Reducing part: Deformation by inducing phase transformation. These insights will help design high-efficiency SOFCs that operate at low temperatures with power densities that are of practical significance. Cha, S. W., Lee, S. J., Park, Y. I., Prinz, F. B. Ryu, W., Huang, Z., Prinz, F. B., Goodman, S. B., Fasching, R. Fabrication of multi-layered biodegradable drug delivery device based on micro-structuring of PLGA polymers. B., Shim, J. H., Guer, T. M., Prinz, F. B. The addition of the 1 nm film led to an increase of the maximum power density of a low-temperature solid oxide fuel cell (LT-SOFC) by a factor of 1.50 at 400 degrees C. The enhanced performance can be attributed to an increased oxide ion incorporation rate on the surface of the modified electrolyte. The method emphasizes micro-fluidic interconnections between layers within the scaffolds and maintenance of high-resolution geometries during the bonding process for the creation of multi-layered scaffolds. 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. A variety of metals can be chosen as the tip material. Frank Blome Independent Director. Amon, C., H., Schmaltz, K., S., Merz, R., Prinz, F., B. Collision avoidance using asynchronous teams. This trend is in qualitative agreement with a simple quantum simulation of the local density of states in a dome-shaped QD. Dasgupta, N. P., Liu, C., Andrews, S., Prinz, F. B., Yang, P. Three-Dimensional Nanostructured Bilayer Solid Oxide Fuel Cell with 1.3 W/cm(2) at 450 degrees C. An, J., Kim, Y., Park, J., Guer, T. M., Prinz, F. B. Fuel Cells for Intermediate Temperature Operation. Atomic Layer Deposition of Lead Sulfide Quantum Dots on Nanowire Surfaces. This study presents atomic scale characterization of grain boundary defect structure in a functional oxide with implications for a wide range of electrochemical and electronic behavior. 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. Saha, M., Latombe, J. C., Chang, Y. C., Prinz, F. Predicting ionic conductivity of solid oxide fuel cell electrolyte from first principles. Crawford, W. S., Cappelli, M. A., Prinz, F. B. Ryu, W., H., Min, S., Fasching, R., Prinz, F. Proton Transport Membranes for Fuel Cells: Polymeric versus Dense Ceramic". Considerable attention has been focused on solid oxide fuel cells (SOFCs) due to their potential for providing clean and reliable electric power. Pt-Ar-HOPG shows slightly enhanced catalytic activity towards oxygen. Prinz, F., B., Fasching, R., Kohl, F., Urban, G., Jobst, G., Keplinger, F. NEXT GENERATION MANUFACTURING TASK PLANNER FOR ROBOTIC ARC-WELDING. Chao, C., Park, J. S., Tian, X., Shim, J. H., Gr, T. M., Prinz, F. B. Shim, J. H., Jiang, X., Bent, S., Prinz, F. B. Usui, T., Dasgupta, N., P., Jiang, X., Lee, W., Prinz, F., B. Further extension of these techniques to create a micro-vascular network within or between layers is possible. Fuel cell performance of the corrugated electrolyte membranes released from silicon substrate showed an increase of power density relative to membranes with planar electrolytes. Kim, Y. In this section, we analyze the short-term loss avoidance of every unplanned, open-market insider sale made by Fritz Prinz in QS / Quantumscape Corp. A consistent pattern of loss avoidance may suggest that future sale transactions may predict declines in price. This work provides an intriguing and effective approach on tuning electronic structures for optimizing the catalytic activity. An, J., Kim, Y. . Amon, C. H., Merz, R., Prinz, F. B., Schmaltz, K. S. Robot-Assisted Shape Deposition Manufacturing. The porous-template technique can produce NWs of various kinds of metals, with diameters down to 10-20 nm, which compete with multiwall carbon nanotube diameters. 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. This system was successfully used to measure light-dependent oxidation currents of a few pico-amperes from the green alga Chlamydomonas reinhardtii. What is. Ryu, W., Fasching, R. J., Vyakarnam, M., Greco, R. S., Prinz, F. B. Mr. McCarthy currently serves as a member of the boards of several privately-held companies. Islands with sub-10 nm diameters were observed during the initial ALD cycles by transmission electron microscopy, and in situ observations of the coalescence and sublimation behavior of these islands show the possibility of further modifying the size and density of dots by annealing. B., Jung, H. J., Park, J. S., Cha, S. W., Guer, T. M., Prinz, F. B. Nanoscale impedance and complex properties in energy-related systems. Enhancing the density of catalytic sites is crucial for improving the performance of energy conversion devices. This work demonstrates the kinetic role of 2 nm thin YSZ/Pt cermet layers on enhancing the oxygen reduction kinetics for low temperature solid oxide fuel cells. 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. Shim, J., H., Cha, S., W., O'Hayre, R., Gr, T., M., Prinz, F., B. Processing and microstructures of fiber Bragg grating sensors embedded in stainless steel. B., Guer, T. M., Kang, S., Jung, H., Sinclair, R., Prinz, F. B. Chang, Y. C., Saha, M., Prinz, F., Latombe, J. C., Pinilla, J. Our results show that the band gap of PbS thin films increased as the film thickness decreased, and the barrier height increased from 0.45 to 2.19eV.