Article
Physics, Applied
Xingyu Wei, Junliang Jiang, Wenqu Xu, Tingting Guo, Kaixuan Zhang, Zishuo Li, Tianshi Zhou, Yifan Sheng, Chunhai Cao, Guozhu Sun, Peiheng Wu
Summary: We have designed and fabricated a compact superconducting qubit circuit using a nanothick NbN film on a high-resistivity silicon substrate. This circuit carries seven transmon qubits and has a much smaller size in the readout circuit compared to conventional superconducting qubit circuits. The transmons were measured and characterized in terms of frequency and time domains with different flux bias, and the transition frequency f01 was adjustable within the range of several GHz. The use of nanothick materials with high kinetic inductance in qubit circuits shows promising potential for quantum circuit integration.
APPLIED PHYSICS LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Xiucheng Wei, Pinku Roy, Zihao Yang, Di Zhang, Zihao He, Ping Lu, Olivia Licata, Haiyan Wang, Baishakhi Mazumder, Nag Patibandla, Yong Cao, Hao Zeng, Mingwei Zhu, Quanxi Jia
Summary: This study achieved high-quality ultrathin epitaxial NbN films using PVD technology at low temperatures, opening up new possibilities for quantum devices. The research revealed a close correlation between film thickness and superconducting properties, with lattice strain observed in films below 20 nm.
MATERIALS RESEARCH LETTERS
(2021)
Article
Physics, Applied
S. Leith, M. Vogel, J. Fan, E. Seiler, R. Ries, X. Jiang
Summary: In recent years, researchers have shown increased interest in alternatives to bulk Nb for superconducting radio frequency (SRF) cavities, particularly focusing on thin films of Nb or other high T-c materials. Recent insights into the potential of single layer high -kappa materials have sparked additional research in this area.
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Olivia G. Licata, Jith Sarker, Mukesh Bachhav, Pinku Roy, Xiucheng Wei, Zihao Yang, Nag Patibandla, Hao Zeng, Mingwei Zhu, Quanxi Jia, Baishakhi Mazumder
Summary: This study investigates the effect of nanoscale chemistry and interfacial abruptness on the superconducting properties of NbN films. The results provide insights for optimizing material design and growth of superconducting NbN films.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Chemistry, Physical
Ali Aftabi, Morteza Mozaffari
Summary: The effects of different concentrations of ZnO nanoparticles on the properties of high-temperature ceramic superconductors were studied. The addition of 0.2 wt% ZnO nanoparticles significantly enhanced the activation energy, flux pinning capability, and inter-granular coupling of the superconducting phase.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Zihao Yang, Xiucheng Wei, Pinku Roy, Di Zhang, Ping Lu, Samyak Dhole, Haiyan Wang, Nicholas Cucciniello, Nag Patibandla, Zhebo Chen, Hao Zeng, Quanxi Jia, Mingwei Zhu
Summary: We have achieved large-scale, ultrathin superconducting NbN thin films on 300 mm Si wafers using a high-volume manufacturing PVD system. The NbN thin films exhibit remarkable structural uniformity and high superconducting quality across the entire wafer, thanks to the use of an AlN buffer layer. The NbN films deposited on AlN-buffered Si substrates show significantly higher superconducting critical temperature and upper critical magnetic field compared to those without AlN.
Article
Physics, Applied
Serghej L. Prischepa, Vasiliy N. Kushnir, Carla Cirillo, Veronika Granata, Ivan Komissarov, Nikolai G. Kovalchuk, Mikhail M. Mikhalik, Alexander L. Danilyuk, Ivan A. Svito, Mindaugas Andrulevicius, Carmine Attanasio
Summary: Superconductivity in hybrids of ultrathin superconducting film/few layer graphene was studied with Nb and NbN. Contact with graphene increased T(c) in Nb but not as much in NbN. The modification of phonon spectrum in the superconductor due to graphene presence was discussed, influencing the electron-phonon coupling constant.
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Gyana Prakash Nanda, Bahadur Sk, Nisha Yadav, Suresh Rajamanickam, Upasana Deori, Rahul Mahashaya, Eli Zysman-Colman, Pachaiyappan Rajamalli
Summary: In this study, highly efficient ultrathin non-doped green and bluish-green OLEDs were achieved using a TADF emitter. The green OLED with an ultrathin EML showed a 2.6-fold higher EQE(max) of 13.5% compared to the conventional device with a luminance of 17,250 cd m(-2).
CHEMICAL COMMUNICATIONS
(2021)
Article
Physics, Applied
M. Shibalov, A. M. Mumlyakov, I. Trofimov, E. R. Timofeeva, A. P. Sirotina, E. A. Pershina, A. M. Tagachenkov, Y. Anufriev, E. Zenova, N. Porokhov, M. A. Tarkhov
Summary: This study utilized plasma-enhanced atomic layer deposition to produce ultrathin superconductive niobium nitride films with a record resistivity of 147 microohm·cm. Experimental findings revealed that the resistivity of the films influences the critical current density.
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
(2021)
Article
Engineering, Chemical
Zhun Zhou, Shiqing Zhou, Xiaoxiang Cheng, Wenkai Liu, Ruoxi Wu, Jing Wang, Bin Liu, Junyong Zhu, Bart Van der Bruggen, Yatao Zhang
Summary: The study demonstrates the successful construction of ultra-thin polyamide membranes using a spin-coating assisted interfacial polymerization method. The membranes exhibit high water permeance and good separation performance, which can be optimized by adjusting the spinning speed, aqueous phase volume, and IP reaction parameters.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Construction & Building Technology
Zhenglai Shen, Som Shrestha, Daniel Howard, Tianli Feng, Diana Hun, Buxin She
Summary: This study proposes a method to reduce the computational cost of thermally anisotropic building envelopes (TABEs) using a finite element-based machine learning framework. Different thermal loop schedules were simulated using finite element models to generate a training data set, and shallow and deep learning models were trained to predict the heat fluxes. The results show that XGBoost can achieve similar accuracy as the deep neural network model but with much less training time, and it can significantly reduce the computation time and achieve energy cost savings.
BUILDING AND ENVIRONMENT
(2023)
Article
Chemistry, Physical
Wanlin Cai, Cheng Zhong, Zi-Wei Ma, Zhuan-Yun Cai, Yue Qiu, Zubia Sajid, De-Yin Wu
Summary: Machine learning is used to optimize classic molecules and improve the performance of multi-resonance thermally activated delayed fluorescence molecules, enhancing color purity and reverse intersystem crossing rate (RISC).
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Energy & Fuels
Noor Saeed Khan, Usa Wannasingha Humphries, Wiyada Kumam, Poom Kumam, Taseer Muhammad
Summary: This article investigates the Cattaneo-Christov heat and mass flux theory in the flow of Maxwell nanofluid and gyrotactic microorganisms towards a spinning disk, considering the effects of Hall current and Darcy porous medium. It also takes into account the entropy generation in the presence of Brownian motion, thermophoresis, thermal radiation, heat source/sink, and chemical reaction. Non-dimensional equations are derived and solved using the homotopy analysis method, and the effects of physical parameters are demonstrated through graphs and a table. Numerical computations show good agreement with published results for the skin friction coefficients.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Chemistry, Physical
Qingqing Wu, Jiaorong Yan, Mingxiang Jiang, Qiguang Dai, Jinyan Wu, Minh Ngoc Ha, Qingping Ke, Xingyi Wang, Wangcheng Zhan
Summary: The successful synthesis of ultrathin Al2O3 nanosheets with regular leaf-like architecture and high thermal stability was achieved in this study. The morphology/thickness could be adjusted and thermal stability enhanced by phosphate, while the nanosheets were used as a support for Pd in catalytic combustion of propane, exhibiting superior activity and resistance to high temperatures.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Materials Science, Multidisciplinary
Yue Wu, Yue Zhao, Xiaocang Han, Guangyu Jiang, Jiangtao Shi, Pan Liu, Mukarram Zaman Khan, Hannu Huhtinen, Jiamin Zhu, Zhijian Jin, Yutaka Yamada
Summary: This study demonstrates the ultra-high growth rate of dual-phase cuprate superconducting film and its impact on performance and behavior under magnetic fields. By investigating the epitaxial growth mechanism and defect structure, the dominant mechanism of weak J(c) anisotropy is confirmed. The research provides important insights for significantly improving production efficiency of future high temperature superconductors.
MATERIALS TODAY PHYSICS
(2021)
Article
Engineering, Electrical & Electronic
Andreas Engel, Julia Lonsky, Xiaofu Zhang, Andreas Schilling
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
(2015)
Article
Engineering, Electrical & Electronic
H. R. Rossmann, A. Bubendorf, F. Zanella, N. Marjanovic, M. Schnieper, E. Meyer, T. A. Jung, J. Gobrecht, R. A. Minamisawa, H. Bartolf
MICROELECTRONIC ENGINEERING
(2015)
Article
Engineering, Electrical & Electronic
H. Bartolf, U. Gysin, T. Glatzel, H. R. Rossmann, T. A. Jung, S. A. Reshanov, A. Schoner, E. Meyer
MICROELECTRONIC ENGINEERING
(2015)
Article
Nanoscience & Nanotechnology
Urs Gysin, Thilo Glatzel, Thomas Schmoelzer, Adolf Schoner, Sergey Reshanov, Holger Bartolf, Ernst Meyer
BEILSTEIN JOURNAL OF NANOTECHNOLOGY
(2015)
Article
Physics, Applied
Aleksey I. Mikhaylov, Alexey V. Afanasyev, Victor V. Luchinin, Sergey A. Reshanov, Adolf Schoner, Lars Knoll, Renato A. Minamisawa, Giovanni Alfieri, Holger Bartolf
JAPANESE JOURNAL OF APPLIED PHYSICS
(2016)
Article
Engineering, Electrical & Electronic
U. Gysin, E. Meyer, Th. Glatzel, G. Guenzburger, H. R. Rossmann, T. A. Jung, S. Reshanov, A. Schoener, H. Bartolf
MICROELECTRONIC ENGINEERING
(2016)
Article
Engineering, Electrical & Electronic
Andreas Engel, Kevin Inderbitzin, Andreas Schilling, Robert Lusche, Alexei Semenov, Heinz-Wilhelm Huebers, Dagmar Henrich, Matthias Hofherr, Konstantin Il'in, Michael Siegel
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
(2013)
Article
Engineering, Electrical & Electronic
Kevin Inderbitzin, Andreas Engel, Andreas Schilling
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
(2013)
Article
Engineering, Manufacturing
Holger Bartolf, Andrei Mihaila, Iulian Nistor, Michael Jurisch, Bernd Leibold, Martin Zimmermann
IEEE TRANSACTIONS ON SEMICONDUCTOR MANUFACTURING
(2013)
Article
Physics, Applied
Andreas Engel, Andreas Schilling
JOURNAL OF APPLIED PHYSICS
(2013)
Article
Physics, Applied
K. Il'in, M. Hofherr, D. Rall, M. Siegel, A. Semenov, A. Engel, K. Inderbitzin, A. Aeschbacher, A. Schilling
JOURNAL OF LOW TEMPERATURE PHYSICS
(2012)
Proceedings Paper
Computer Science, Theory & Methods
A. Mihaila, V. K. Sundaramoorthy, R. Minamisawa, L. Knoll, H. Bartolf, E. Bianda, G. Alfieri, M. Rahimo
2016 28TH INTERNATIONAL SYMPOSIUM ON POWER SEMICONDUCTOR DEVICES AND ICS (ISPSD)
(2016)
Proceedings Paper
Energy & Fuels
H. Bartolf, A. Mihaila, L. Knoll, V. K. Sundaramoorthy, R. A. Minamisawa, E. Bianda
2015 17TH EUROPEAN CONFERENCE ON POWER ELECTRONICS AND APPLICATIONS (EPE'15 ECCE-EUROPE)
(2015)
Proceedings Paper
Computer Science, Hardware & Architecture
H. Bartolf, U. Gysin, H. R. Rossmann, A. Bubendorf, T. Glatzel, T. A. Jung, E. Meyer, M. Zimmermann, S. Reshanov, A. Schoner
2015 IEEE 27TH INTERNATIONAL SYMPOSIUM ON POWER SEMICONDUCTOR DEVICES & IC'S (ISPSD)
(2015)
Proceedings Paper
Crystallography
H. Bartolf, V. Sundaramoorthy, A. Mihaila, M. Berthou, P. Godignon, J. Millan
SILICON CARBIDE AND RELATED MATERIALS 2013, PTS 1 AND 2
(2014)