Search Results - "Panna, Alireza R."

Graphene Devices for Tabletop and High-Current Quantized Hall Resistance Standards by Rigosi, Albert F., Panna, Alireza R., Payagala, Shamith U., Kruskopf, Mattias, Kraft, Marlin E., Jones, George R., Wu, Bi-Yi, Lee, Hsin-Yen, Yang, Yanfei, Hu, Jiuning, Jarrett, Dean G., Newell, David B., Elmquist, Randolph E.

“…We report the performance of a quantum Hall resistance standard based on epitaxial graphene maintained in a 5-T tabletop cryocooler system. This quantum…”
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A macroscopic mass from quantum mechanics in an integrated approach by Seifert, Frank C., Panna, Alireza R., Hu, I-Fan, Keck, Lorenz H., Chao, Leon S., Payagala, Shamith U., Jarrett, Dean G., Liu, Chieh-I, Saha, Dipanjan, Elmquist, Randolph E., Schlamminger, Stephan, Rigosi, Albert F., Newell, David B., Haddad, Darine

“…The revision of the International System of Units (SI) on May 20th, 2019, has enabled new improved experiments to consolidate and simplify mechanical and…”
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Two-Terminal and Multi-Terminal Designs for Next-Generation Quantized Hall Resistance Standards: Contact Material and Geometry by Kruskopf, Mattias, Rigosi, Albert F., Panna, Alireza R., Patel, Dinesh K., Jin, Hanbyul, Marzano, Martina, Berilla, Michael, Newell, David B., Elmquist, Randolph E.

“…In this paper, we show that quantum Hall resistance measurements using two terminals may be as precise as four-terminal measurements when applying…”
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Conformity Experiment on Inelastic Scattering Exponent of Electrons in Two Dimensions by Yeh, Ching-Chen, Liao, Pin-Chi, Yang, Yanfei, Lin, Wei-Chen, Panna, Alireza R, Rigosi, Albert F, Elmquist, Randolph E, Liang, Chi-Te

“…The quantum Hall (QH) effect is one of the most widely studied physical phenomenon in two dimensions. The plateau-plateau transition within this effect can be…”
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Towards epitaxial graphene p-n junctions as electrically programmable quantum resistance standards by Hu, Jiuning, Rigosi, Albert F., Kruskopf, Mattias, Yang, Yanfei, Wu, Bi-Yi, Tian, Jifa, Panna, Alireza R., Lee, Hsin-Yen, Payagala, Shamith U., Jones, George R., Kraft, Marlin E., Jarrett, Dean G., Watanabe, Kenji, Taniguchi, Takashi, Elmquist, Randolph E., Newell, David B.

“…We report the fabrication and measurement of top gated epitaxial graphene p-n junctions where exfoliated hexagonal boron nitride ( h- BN) is used as the gate…”
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Development of a Topological-Insulator-Based Quantum Resistance Standard by Mai Tran, Ngoc Thanh, Rodenbach, Linsey K., Underwood, Jason M., Panna, Alireza R., Barcikowski, Zachary S., Andersen, Molly P., Zhang, Peng, Tai, Lixuan, Wang, Kang L., Elmquist, Randolph E., Jarrett, Dean G., Newell, David B., Goldhaber-Gordon, David, Rigosi, Albert F.

“…This paper describes the characterization of the quantum anomalous Hall (QAH) effect resistor with Chromium-doped Bismuth Antimony Telluride with the efforts…”
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Graphene-Based Star-Mesh Resistance Networks by Jarrett, Dean G., Yeh, Ching-Chen, Payagala, Shamith U., Panna, Alireza R., Yang, Yanfei, Meng, Linli, Mhatre, Swapnil M., Tran, Ngoc Thanh Mai, Hill, Heather M., Saha, Dipanjan, Elmquist, Randolph E., Newell, David B., Rigosi, Albert F.

“…Advances in the development of graphene-based technology have enabled improvements in DC resistance metrology. Devices made from epitaxially grown graphene…”
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Comparison Between Graphene and GaAs Quantized Hall Devices With a Dual Probe by Payagala, Shamith U., Rigosi, Albert F., Panna, Alireza R., Pollarolo, Alessio, Kruskopf, Mattias, Schlamminger, Stephan, Jarrett, Dean G., Brown, Ryan, Elmquist, Randolph E., Brown, Duane, Newell, David B.

“…A graphene quantized Hall resistance (QHR) device fabricated at the National Institute of Standards and Technology, Gaithersburg, MD, USA, was measured…”
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Metrological Suitability of Functionalized Epitaxial Graphene by Rigosi, Albert F., Kruskopf, Mattias, Panna, Alireza R., Payagala, Shamith U., Jarrett, Dean G., Newell, David B., Elmquist, Randolph E.

“…This work presents one solution for long-term storage of epitaxial graphene (EG) in air, namely through the functionalization of millimeter-scale devices with…”
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Advanced Temperature-Control Chamber for Resistance Standards by Payagala, Shamith U, Panna, Alireza R, Rigosi, Albert F, Jarrett, Dean G

“…Calibration services for resistance metrology have continued to advance their capabilities and establish new and improved methods for maintaining standard…”
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Superconducting Contact Geometries for Next-Generation Quantized Hall Resistance Standards by Panna, Alireza R., Kruskopf, Mattias, Rigosi, Albert F., Marzano, Martina, Patel, Dinesh K., Payagala, Shamith U., Jarrett, Dean G., Newell, David B., Elmquist, Randolph E.

“…Precision quantum Hall resistance measurements can be greatly improved when implementing new electrical contact geometries made from superconducting NbTiN. The…”
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AC and DC Quantized Hall Array Resistance Standards by Elmquist, Randolph E., Kruskopf, Mattias, Patel, Dinesh K., Hu, I-Fan, Liu, Chieh-I, Rigosi, Albert F., Panna, Alireza R., Payagala, Shamith U., Jarrett, Dean G.

“…Quantized Hall array resistance standards (QHARS) span values from 100\ \ \Omega to 1\ \ \mathrm{M} {\Omega} and demonstrate precision approaching that of…”
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Optimization of Wye-Delta-Type Quantum Hall Resistance Standard by Yang, Yanfei, Jarrett, Dean G., Panna, Alireza R., Yang, Cheng Hsueh, Rigosi, Albert F., Mai Tran, Ngoc Thanh, Newell, David B., Elmquist, Randolph E.

“…Theoretically wye-delta transformation can be used to realize ultra-high resistances up to PΩ. For graphene-based quantum Hall array resistance standards…”
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Recursive Star-Mesh Transformations for Resistance Standards by Jarrett, Dean G., Rigosi, Albert F., Scaletta, Dominick S., Thanh Mai Tran, Ngoc, Hill, Heather M., Panna, Alireza R., Yang, Cheng Hsueh, Yang, Yanfei, Elmquist, Randolph E., Newell, David B.

“…A recent mathematical framework for optimizing resistor networks to achieve values in the MΩ through GΩ levels was employed for two specific cases. Objectives…”
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Single-cryostat integration of the quantum anomalous Hall and Josephson effects by Underwood, Jason M., Rodenbach, Linsey K., Mai Tran, Ngoc Thanh, Panna, Alireza R., Barcikowski, Zachary S., Andersen, Molly P., Zhang, Peng, Tai, Lixuan, Wang, Kang L., Elmquist, Randolph E., Jarrett, Dean G., Newell, David B., Goldhaber-Gordon, David, Rigosi, Albert F.

“…By directly integrating a quantum anomalous Hall resistor (QAHR) and a programmable Josephson voltage standard (PJVS) into a single cryostat, we have…”
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Uncertainty of the Ohm Using Cryogenic and Non-Cryogenic Bridges by Panna, Alireza R., Kraft, Marlin E., Rigosi, Albert F., Jones, George R., Payagala, Shamith U., Kruskopf, Mattias, Jarrett, Dean G., Elmquist, Randolph E.

“…We describe recent scaling measurements to decade resistance levels based on both cryogenic and non-cryogenic current comparator bridges. National measurement…”
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A Table-Top Graphene Quantized Hall Standard by Rigosi, Albert F., Jarrett, Dean G., Elmquist, Randolph E., Newell, David B., Panna, Alireza R., Payagala, Shamith U., Jones, George R., Kraf, Marlin E., Kruskopf, Mattias, Wu, Bi-Yi, Lee, Hsin-Yen, Yang, Yanfei

“…We report the performance of a quantum standard based on epitaxial graphene maintained in a 5 T table-top cryocooler system. The v=2 resistance plateau, with a…”
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Constructing 100 M{\Omega} and 1 G{\Omega} Resistance Standards via Star-Mesh Transformations by Jarrett, Dean G, Rigosi, Albert F, Scaletta, Dominick S, Tran, Ngoc Thanh Mai, Hill, Heather M, Panna, Alireza R, Yang, Cheng Hsueh, Yang, Yanfei, Elmquist, Randolph E, Newell, David B

“…A recent mathematical framework for optimizing resistor networks to achieve values in the M{\Omega} through G{\Omega} levels was employed for two specific…”
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Fractal-like star-mesh transformations using graphene quantum Hall arrays by Scaletta, Dominick S, Mhatre, Swapnil M, Tran, Ngoc Thanh Mai, Yang, Cheng-Hsueh, Hill, Heather M, Yang, Yanfei, Meng, Linli, Panna, Alireza R, Payagala, Shamith U, Elmquist, Randolph E, Jarrett, Dean G, Newell, David B, Rigosi, Albert F

“…A mathematical approach is adopted for optimizing the number of total device elements required for obtaining high effective quantized resistances in…”
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Star-Mesh Quantized Hall Array Resistance Devices by Jarrett, Dean G, Yeh, Ching-Chen, Payagala, Shamith U, Panna, Alireza R, Yang, Yanfei, Meng, Linli, Mhatre, Swapnil M, Tran, Ngoc Thanh Mai, Hill, Heather M, Saha, Dipanjan, Elmquist, Randolph E, Newell, David B, Rigosi, Albert F

“…Advances in the development of graphene-based technology have enabled improvements in DC resistance metrology. Devices made from epitaxially grown graphene…”
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