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View details for Web of Science ID 000291322600002, View details for DOI 10.1016/j.elecom.2011.02.004, View details for Web of Science ID 000290741500006. Bae, K., Son, K. S., Kim, J. W., Park, S. W., An, J., Prinz, F. B., Shim, J. H. Motoyama, M., Chao, C., An, J., Jung, H. J., Gr, T. M., Prinz, F. B. Insight and analysis of top stories from our award winning magazine "Bloomberg Businessweek". With the aid of micro-fabrication technology, a novel scaffolding method for biodegradable polymers such as polylactic acid (PLA), polyglycolic acid (PGA), and the copolymers poly(lactide-co-glycolide)(PLGA), was developed to construct three-dimensional multi-layer micro-fluidic tissue scaffolds. Insider Purchases QS / Quantumscape Corp - Short Term Profit Analysis. Use of a high-flow diaphragm valve in the exhaust line of atomic layer deposition reactors, Patterned Silver Nanomesh Cathode for Low-Temperature Solid Oxide Fuel Cells. 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. Liang, D. H., Park, B. H., Koolwal, A., Prinz, F. The influence of size scale on the performance of fuel cells, Electrochemical nanopatterning of Ag on solid-state ionic conductor RbAg4I5 using atomic force microscopy. A sharp peak in the performance of sputtered platinum fuel cells at ultra-low platinum loading. Here we report a 3-D biodegradable microscaffolding (3D-BMS) technology and its process characterization as well as a microscale cellular loading technology as an efficient way to massively populate biodegradable polymers with cells at single cell resolution. Prinz, F., B., Aschauer, E., Fasching, R., Urban, G., Nicolussi, G., Husinsky, W. ROBOT-ASSISTED SHAPE DEPOSITION MANUFACTURING. Kietzman, J. W., Cooper, A. G., Weiss, L. E., Schultz, L., Lombardi, J. L., Prinz, F. B. Reflections on a concurrent design methodology: A case study in wearable computer design. 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. Therefore, quantitative analysis is crucial to understanding the relationship between the actual local surface potential distribution and the quantities obtained from EFM measurements. Sol-flame synthesis of cobalt-doped TiO2 nanowires with enhanced electrocatalytic activity for oxygen evolution reaction. Silver Nanomesh as a Cathode for Solid Oxide Fuel Cells. 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. Characterizations of the TiO2:Co NWs show that Co dopants exhibit 2+ oxidation state and substitutionally occupy Ti sites in the TiO2 lattice. An, J., Kim, Y., Gr, T. M., Prinz, F. B. We show significant oxygen deficiency due to segregation of oxide-ion vacancies near the grain-boundary core with half-width < 0.6nm. Fabian, T., O'Hayre, R., Litster, S., Prinz, F., B., Santiago, J., G. MEMS Fabrication and Performances of Nano-Thin Solid Oxide Fuel Cell. Kim, Y. Fabian, T., Posner, J. D., O'Hayre, R., Cha, S., Eaton, J. K., Prinz, F. B., Santiago, J. G. High ionic conductivity in ultrathin nanocrystalline gadolinia-doped ceria films. QuantumScape was established in 2010, the main founders are Jagdeep Singh Tim Holme and Fritz Prinz. We observe a consistent increase in the energy onset of electronic excitations from the lateral center of the dot toward the edges, which we attribute purely to shape. Kim, Y., Provine, J., Waich, S. P., Park, J., Phuthong, W., Dadlani, A. L., Kim, H., Schindier, P., Kim, K., Prinz, F. B. Fabrication of Nanotubular Membrane Electrode Assembly for A Solid Oxide Fuel Cell. We found that oxygen column intensity is governed primarily by column occupancy rather than by static displacement of oxygen atoms. View details for DOI 10.1088/0957-4484/19/03/035710, View details for DOI 10.1016/j.jpowsour.2007.09.066, View details for Web of Science ID 000252513100009, View details for Web of Science ID 000272018400004, View details for Web of Science ID 000258976500020, View details for Web of Science ID 000262710700009, View details for Web of Science ID 000272018400002, View details for Web of Science ID 000272018400018, View details for Web of Science ID 000271859300058. We have built a combined scanning tunneling microscope-atomic layer deposition (STM-ALD) tool that performs in situ imaging of deposition. View details for DOI 10.1089/ten.tea.2009.0267, View details for Web of Science ID 000275041500016, View details for PubMedCentralID PMC2862617, View details for DOI 10.1016/j.elecom.2009.11.031, View details for Web of Science ID 000274878400013, View details for Web of Science ID 000274321900021, View details for Web of Science ID 000285543200004, View details for Web of Science ID 000313248000032. The dielectric constant increased from 51 (as-deposited) to 122 (plasma-treated), and the leakage current density decreased by 1 order of magnitude. Musician Mack, J. F., Van Stockum, P. B., Yemane, Y. T., Logar, M., Iwadate, H., Prinz, F. B. INCREASED CATHODIC KINETICS IN IT-SOFCs BY INSERTING HIGHLY-CONDUCTIVE NANOCRYSTALLINE MATERIALS, Opportunities of ALD for Thin Film Solid Oxide Fuel Cells, Oxidative Removal of Self-Assembled Monolayers for Selective Atomic Layer Deposition. Dasgupta, N. P., Mack, J. F., Langston, M. C., Bousetta, A., Prinz, F. B. 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. Design and tuning of a vacuum microplasma spray system: Particle entrainment. Atomic Scale Verification of Oxide-Ion Vacancy Distribution near a Single Grain Boundary in YSZ. The release of bFGF was regulated at 40 ng/day for four weeks; bioactivity was assessed by monitoring the growth of 3T3 fibroblasts. 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. Fessler, J. R., Merz, R., Nickel, A. H., Prinz, F. B., Weiss, L. E. Shape Deposition Manufacturing of wearable computers. Area-selective atomic layer deposition (ALD) of lead sulfide (PbS) was achieved on octadecyltrichlorosilane (ODTS)-patterned silicon substrates. The results demonstrate that electrolyte surface engineering with ALD can have a meaningful impact on the performance of electrochemical devices. Enhancing charge transfer kinetics by nanoscale catalytic cermet interlayer. Iancu, A. T., Logar, M., Park, J., Prinz, F. B. Investigation of transport phenomena in micro flow channels for miniature fuel cells. Fessler, J., Nickel, A., Link, G., Prinz, F., FUSSELL, P. The Compact Graph Format: An Interchange Standard for Solid Freeform Fabrication. Park, Y. I., Su, P. C., Cha, S. W., Saito, Y., Prinz, F. B. In vivo O-2 measurement inside single photosynthetic cells. B., Guer, T. M., Kang, S., Jung, H., Sinclair, R., Prinz, F. B. A microfabricated direct methanol fuel cell with integrated electroosmotic pump. View details for Web of Science ID 000317317500017. 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. Fuel Cells for Intermediate Temperature Operation. Prinz, F., B., Fasching, R., Aschauer, E., Urban, G. Surface characterization of thin film platinum electrodes applied for biosensors by means of cyclic voltammetry and laser - SNMS. Pinilla, J., M., Kao, J., H., Prinz, F., B. Consequently, PbS thin films were grown selectively only where ODTS was not present, whereas deposition was blocked in regions where ODTS was grown. Effects of Ion Irradiation on the Performance of Solid Oxide Fuel Cells. Applying a positive bias, in contrast, generated a positive surface charge adjacent to the tip contact area. Huang, H., Holme, Tim, P., Prinz, Fritz, B. 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 An, J., Bae, J., Hong, S., Koo, B., Kim, Y., Guer, T. M., Prinz, F. B. Kim, Y. 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. We also believe that the sustained kinetics for the fully mixed cermet layer sample stems from better thermal stability of Pt islands separated by the ALD YSZ matrix, which helped to maintain the high-density TPBs even at elevated temperature. Hammerick, K. E., Huang, Z., Sun, N., Lam, M. T., Prinz, F. B., Wu, J. C., Commons, G. W., Longaker, M. T. Gadolinia-doped Ceria Cathode Interlayer for Low Temperature Solid Oxide Fuel Cell, Low Temperature Direct Methanol Fuel Cell With YSZ Electrolyte. 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. TiO2 homojunction diodes fabricated completely by ALD are developed as a demonstration of the utility of these techniques and shown to exhibit useful rectifying characteristics even with minimal processing refinement. Human fibroblast and hASC stiffness was also ascertained for comparison. This trend is in qualitative agreement with a simple quantum simulation of the local density of states in a dome-shaped QD. An, J., Koh, A. L., Park, J. S., Sinclair, R., Guer, T. M., Prinz, F. B. Enhancing Charge Transfer Kinetics by Nanoscale Catalytic Cermet Interlayer. This is made possible by nanostructuring of the ultrathin (60 nm) electrolyte interposed with a nanogranular catalytic interlayer at the cathode/electrolyte interface. Band gap measurements were carried out by STS, and an effective mass theory was developed to compare the experimental results. B., Park, J. S., Shim, J. H., Guer, T. M., Prinz, F. B. 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 devices were constructed by micro-molding and thermal assembly of 85/15 poly(L-lactide-co-glycolide) sheets. View details for DOI 10.1016/j.bbrc.2010.05.003, View details for Web of Science ID 000279292800003, View details for DOI 10.1016/j.jpowsour.2009.12.025, View details for Web of Science ID 000275386100039, View details for Web of Science ID 000277635000002, View details for DOI 10.1016/j.jpowsour.2009.12.030, View details for Web of Science ID 000275074200023. Weiss, L., Prinz, F., Neplotnik, G., Padmanabhan, K., Schultz, L., Merz, R. Miniaturisierte, integrierte Biosensoren fr Glucose- und Lactat - Monitoring. Ryu, W., Hammerick, K. E., Kim, Y. Sample scaffolds were constructed for purposes such as channel-directed cell growth and size-based cell sorting. Gurumoorthy, B., Kromp, K., Prinz, F. B., BORNHAUSER, A. C. A PERTURBATION APPROACH TO ROBOT CALIBRATION. Tim Holme, and Fritz B. Prinz in May 2010 and is . Structural and compositional analysis of solid oxide fuel cell electrolytes using transmission electron microscopy. Hong, S., Bae, J., Koo, B., Chang, I., Cho, G. Y., Kim, Y., Cha, S. W., Prinz, F. B. Digitally-patterned nanoprobe arrays for single cell insertion enabled by wet tapping. The resulting fabricated patterns were characterized by scanning electron microscopy and Auger electron spectroscopy, which demonstrated that ALD PbS was well confined to defined patterns with high selectivity by ODTS SAMs. A Computational Comparison of Electron Transfer from Reduced Ferredoxin to Flavin Adenine Dinucleotide and a Gold Electrode. Design of heterogeneous catalysts and the application to the oxygen reduction reaction, Improving PEM fuel cell catalyst activity and durability using nitrogen-doped carbon supports: observations from model Pt/HOPG systems. Seo, Y. H., Kim, L. H., Prinz, F. B., Ryu, W. Electrochemical tuning of vertically aligned MoS2 nanofilms and its application in improving hydrogen evolution reaction. Kim, N., Hsieh, C., Huang, H., Prinz, F. B., Stebbins, J. F. Atomic layer deposition and chemical vapor deposition precursor selection method application to strontium and barium precursors, COMP 73-Conversion of a plant chloroplast to a biological fuel cell: 1. Part strength improvement in polymer shape deposition manufacturing, Medial Axis Transform (MAT) of general 2D shapes and 3D polyhedra for engineering applications. 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. 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. Park, J., S., Kang, S., K., Gr, T., M., Prinz, F., B. Cell suspensions were passed at a predetermined flow rate through biodegradable polymer layers that contained tapered microholes in a massively parallel process. in Physics, a M.S. QuantumScape Gender Male Prof. Fritz Prinz is the Chairman of Mechanical Engineering at Stanford University. Sharon, J. Coyne, R., Finger, S., Konda, S., Prinz, F., B., Siewiorek, Daniel, P., Subrahmanian, E. Prinz, F., B., Urban, G., Jobst, G., Keplinger, F., Aschauer, E., Fasching, R. Thermal Modelling and Experimental Testing of MD* Spray Shape Deposition Processes. Chang, Y., Ramaswami, K., Pinilla, M., Walch, S., Prinz, F. Measurement of temperature and reaction species in the cathode diffusion layer of a free-convection fuel cell. Prinz, F., B., Kohl, F., Fasching, R., Urban, G., Steurer, J., Olcaytug, F. A measurement algorithm for capacitive speed encoder with a modified front-end topology , Instrumentation and Measurement, Material Strength in Polymer Shape Deposition Manufacturing Proceedings of the Solid Freeform Fabrication Symposium, Optimal motion planning for deposition in layered manufacturing, A robust capacitive angular speed sensor, Instrumentation and Measurement, Thin film thermo-mechanical sensors embedded in metallic structures, Process planning and automation for additive-subtractive solid freeform fabrication, Automated fabrication of complex molded parts using mold SDM. Shim, J. H., Park, J. S., An, J., Guer, T. M., Kang, S., Prinz, F. B. Fabrication and Characterization of Lead Sulfide Thin Films by Atomic Layer Deposition. Modification of Nafion (R) Using 3-mercaptopropyl Trimethoxysilane. in Economics from Pomona College, a M.B.A. from Stanford Graduate School of Business, and a M.S. Mechanical masking of films deposited by atomic layer deposition, Surface-Modified Low-Temperature Solid Oxide Fuel Cell. Mr. McCarthy also currently serves on the board of QSV Operations LLC. Water Management at the Cathode of a Planar Air-Breathing Fuel Cell with an Electroosmotic Pump. Dasgupta, N. P., Neubert, S., Lee, W., Trejo, O., Lee, J., Prinz, F. B. B., Park, J. S., Gr, T., Kang, S. K., Prinz, F. B. In the future, arrays of micro-SOFCs with high power density may enable a range of mobile and portable power applications. 300 likes. 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. He is a board member of National Research Council Committee. 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. Impact of Accompanying Hydrogen Generation on Metal Nanotube Electrodeposition. Interlayering 17.5 nm of Yttria-doped ceria (YDC) thin films between bulk yttria-stabilized-zirconia electrolyte and a porous Pt cathode enhanced the performance of low-temperature solid oxide fuel cells. Amon, C., H., Schmaltz, K., S., Merz, R., Prinz, F., B. Collision avoidance using asynchronous teams. Thus, we propose micro-geometry as an alternative measure of controlling drug release. Quadros, W. R., Gurumoorthy, B., Ramaswami, K., Prinz, F. B. Effect of High Surface Area Pd Electrodes on SOFC Performance at 350 degrees C. Komadina, J., Motoyama, M., Kim, Y. Gurumoorthy, B., Kirchner, H. O., Prinz, F. B., Sinclair, G. B. Mr. McCarthy currently serves as a member of the boards of several privately-held companies. For cells with unmixed and fully mixed cermet interlayers, the maximum power density was enhanced by a factor of 1.5 and 1.8 at 400 C, and by 2.3 and 2.7 at 450 C, respectively, when compared to control cells with no cermet interlayer. Holme, T., Zhou, Y., Pasquarelli, R., O'Hayre, R. Interpretation of Low Temperature Solid Oxide Fuel Cell Electrochemical Impedance Spectra. 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. Utilizing the aberration-corrected TEM capability and HRTEM simulation results, we experimentally verified that oxygen vacancies segregate near the single grain boundary of a YSZ bicrystal. 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. In: Micro Power Sources. 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 OMFC was further studied using simulation packages for optimal design conditions. Mr. McCarthy holds a B.A. 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). For Pt clusters supported on HOPG with nitrogen defects, calculations show a greater driving force for nucleation and greater particle tethering. Live from New York, is focused on bringing you. An, J., Kim, Y. 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 increase the electrochemically active surface area, yttria-stabilized zirconia membranes with thickness of 70 nm were deposited onto prepatterned silicon substrates.