Article
Crystallography
Shinobu Aoyagi, Ayumi Aoyagi, Hiroaki Takeda, Hitoshi Osawa, Kazushi Sumitani, Yasuhiko Imai, Shigeru Kimura
Summary: Lead-containing relaxor ferroelectrics exhibit significant piezoelectric capabilities due to their heterogeneous structures. Time-resolved nanobeam X-ray diffraction reveals the local lattice strain and Bragg intensity distributions under an alternating electric field, demonstrating the presence of nanodomains with different responses within the measured local area. The dynamic motion of nanodomains in the heterogeneous structure enables large piezoelectric lattice strain and fatigue-free ferroelectric polarization switching.
Article
Optics
I Petrov, U. Boesenberg, V. A. Bushuev, J. Hallmann, K. Kazarian, W. Lu, J. Moller, M. Reiser, A. Rodriguez-Fernandez, L. Samoylova, M. Scholz, H. Sinn, A. Zozulya, A. Madsen
Summary: This study presents experimental data illustrating the impact of heat load on the performance of a cryogenically cooled monochromator under the high intensity and MHz repetition rate of photon pulses generated by the European X-ray Free-Electron Laser. The measurements are in good agreement with a depth-uniform model of X-ray dynamical diffraction considering beam absorption and heat deformation of the crystals.
Article
Materials Science, Multidisciplinary
Hongyan Zhu, Jie Liu, Rongrong Chen, Bo Feng, Caina Luan, Jin Ma, Hongdi Xiao
Summary: In this study, LiNbO3-type ZnSnO3 single crystal thin films were deposited on a LiTaO3 substrate using pulsed laser deposition, followed by an annealing process. The film deposited at 700 degrees Celsius showed the highest crystal quality, while the film annealed at 800 degrees Celsius exhibited partial decomposition. The ZnSnO3 thin film exhibited a hexagonal structure with slightly shrunken lattice constants, and showed an optical band gap of about 3.90 eV and an average transmittance of approximately 79% in the visible light range. Due to its high transmittance, wide bandgap, and high crystal quality, the ZnSnO3 thin film is expected to have wide application potential in optoelectronic devices.
Article
Chemistry, Analytical
Ieva Markuniene, Marzieh Rabiei, Sohrab Nasiri, Sigita Urbaite, Arvydas Palevicius, Giedrius Janusas
Summary: In this study, PVDF-based composites were prepared with HA and AgNO3, using dimethyl sulfoxide as the dispersing solvent. The X-ray diffraction analysis confirmed the presence of amorphous and mixed amorphous and crystalline phases in the composites. SEM images and EDX analysis demonstrated the roles of PVDF, HA, and AgNO3. The designed device consisting of 0.1 g HA and 0.5 g PVDF showed the highest energy barrier, polarity, and surface energy, making it a promising material for energy harvesting applications.
Article
Multidisciplinary Sciences
Amartya Mandal, Pragya Tiwari, Paul K. Upputuri, Venkata R. Dantham
Summary: This article reports the theoretical investigation on the photonic nanojets (PNJs) of single dielectric microspheres illuminated by focused broadband radiation from various sources. The study explores the effects of incident beam waist, refractive index of the surrounding medium, and radius of the microsphere on the characteristic parameters of PNJs. Interestingly, the characteristic parameters of PNJs obtained from solid microspheres under broadband and monochromatic radiation are found to be close. Additionally, the study examines the characteristic parameters of PNJs from core-shell microspheres of different thicknesses illuminated by polychromatic radiation from commonly used sources. For each thickness, an appropriate wavelength of monochromatic radiation is found to generate PNJs with similar characteristic parameters to those obtained from polychromatic radiation.
SCIENTIFIC REPORTS
(2022)
Article
Materials Science, Ceramics
Ram Narayan Chauhan, Nidhi Tiwari
Summary: ZIWO thin film transistors fabricated by RF magnetron sputtering exhibit better device performance compared to IWO and ZnO counterparts.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2021)
Article
Materials Science, Multidisciplinary
Shinho Cho
Summary: In this study, RF-sputtered Eu3+-doped NaTaO3 thin films were grown at different deposition temperatures. The results showed that the thin films contained mixed phases of NaTaO3 and Na2Ta8O21, and the optimal photoluminescence intensity and optical properties were achieved at a specific growth temperature.
CURRENT APPLIED PHYSICS
(2022)
Article
Optics
Peco Myint, Miaoqi Chu, Ashish Tripathi, Michael J. Wojcik, JIan Zhou, Mathew J. Cherukara, Suresh Narayanan, Jin Wang, Zhang Jiang
Summary: Surface-sensitive reflection-geometry scattering techniques, such as grazing incident small angle X-ray scattering, are commonly used to study nanostructures on substrates and provide statistical structural information. Coherent surface scattering imaging (CSSI) is a powerful yet non-invasive technique that can probe the absolute three-dimensional structural morphology of the sample. However, conventional CDI reconstruction techniques cannot be directly applied to CSSI due to the dynamical scattering phenomenon near the critical angle of total external reflection. To overcome this, a multislice forward model was developed to simulate the dynamical scattering from surface structures and the underlying substrate, enabling the reconstruction of an elongated 3D pattern from a single shot scattering image in CSSI geometry.
Article
Chemistry, Physical
Sandra Stanionyte, Tadas Malinauskas, Gediminas Niaura, Martynas Skapas, Jan Devenson, Anunas Krotkus
Summary: Bismuth films with different thicknesses were grown on a Si (111) substrate by molecular beam epitaxy, where the crystal structures and strain properties were studied using high-resolution X-ray diffraction and Raman measurements. It was found that different phases of bismuth exhibit distinct structural features and physical properties depending on the layer thickness.
Article
Engineering, Multidisciplinary
Shrutidhara Sarma, Surinder Singh, A. Garg
Summary: An Ag-Carbon nanotube (CNT) nanocomposite film was developed as the sensing element of a thin film sensor (TFS) in this study, showing better sensitivity compared to pure Ag TFS. Static calibration revealed a better temperature coefficient for the nanocomposite TFS, indicating improved sensitivity.
Article
Chemistry, Multidisciplinary
Olivier Thomas, Ismail Cevdet Noyan
Summary: Various formulations for diffraction from ultra-thin single-crystal films in symmetric scattering configuration were compared, showing that some implicit assumptions in these formulations are no longer valid within this thickness range. As a result, traditional analysis methods cannot establish a correlation between the position, integrated intensity, integral breadth of a diffraction peak, and the lattice spacing or the number of unit cells along the diffraction vector. Simple equations were proposed to obtain accurate values of these parameters for the specific sample/diffraction geometry combination. The development of rigorous formalisms for analyzing diffraction from nanocrystals is suggested.
JOURNAL OF APPLIED CRYSTALLOGRAPHY
(2023)
Article
Optics
Mengyue Xu, Yuntao Zhu, Jin Tang, Jingyi Wang, Lin Liu, Huixiao Ma, Siyuan Yu, Bofang Zheng, Xinlun Cai
Summary: In the past decade, coherent technology has been used in long-haul transmission systems to meet the growing demand for capacity at lower costs per bit. A high-performance coherent modulator with high data rates, wide bandwidth, small footprint, and low power operation is proposed. The device allows for attojoule-per-bit level electrical energy consumption over transmission distances above 1000 km, opening opportunities for lower-cost and capacity-intensive coherent systems that consume ultra-low power, support high data rate, and work in small spaces.
Article
Engineering, Electrical & Electronic
Yu-Xuan Wang, Ting-Chang Chang, Mao-Chou Tai, Chia-Chuan Wu, Yu-Fa Tu, Jian-Jie Chen, Wei-Chen Huang, Yu-Shan Shih, Yu-An Chen, Jen-Wei Huang, Simon Sze
Summary: This study investigates the effects of different lighting conditions on transfer characteristics of LTPS TFTs during NBTS, revealing that degradation varies depending on whether the devices are subjected to NBTS in a darkened or UV environment. The phenomenon is mainly attributed to light-generated electrons recombining with inversed holes, leading to a lower degree of degradation. Additionally, the impact of UV light is found to be an edge effect at different channel lengths.
IEEE ELECTRON DEVICE LETTERS
(2021)
Article
Chemistry, Physical
Adham Aleid, Khalid Alhussaini, Mohammad Nisar
Summary: This study investigated the impact of varying positions of different materials in an X-ray target on its coherent scatter pattern using the scatter imaging technique. The results showed that the position of materials affects the scatter patterns, and the coherent scatter imaging technique can be used to determine the position of materials in composite targets.
RADIATION PHYSICS AND CHEMISTRY
(2023)
Article
Polymer Science
Federico Di Sacco, Leon de Jong, Theopile Pelas, Giuseppe Portale
Summary: The morphological and structural changes of isotactic polypropylene (iPP) thin films casted by hot-solution spin coating are studied using AFM and GIWAXS techniques. The transition from a 3D to quasi-2D morphology is observed when reducing the film thickness. Various lamellar orientations and mixed phases are observed at different film thicknesses.
Article
Engineering, Electrical & Electronic
Conal E. Murray, Mikhail Treger, I. C. Noyan, Robert Rosenberg
IEEE TRANSACTIONS ON DEVICE AND MATERIALS RELIABILITY
(2016)
Article
Chemistry, Physical
S. O. Hruszkewycz, M. Allain, M. V. Holt, C. E. Murray, J. R. Holt, P. H. Fuoss, V. Chamard
Article
Engineering, Electrical & Electronic
Jay M. Gambetta, Conal E. Murray, Y. -K. -K. Fung, Douglas T. McClure, Oliver Dial, William Shanks, Jeffrey W. Sleight, Matthias Steffen
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
(2017)
Article
Engineering, Electrical & Electronic
Michael S. Gordon, Kenneth P. Rodbell, Conal E. Murray, Brendan D. McNally
IEEE TRANSACTIONS ON NUCLEAR SCIENCE
(2017)
Article
Physics, Applied
Shogo Mochizuki, Conal E. Murray, Anita Madan, Teresa Pinto, Yun-Yu Wang, Juntao Li, Weihao Weng, Hemanth Jagannathan, Yasuhiko Imai, Shigeru Kimura, Shotaro Takeuchi, Akira Sakai
JOURNAL OF APPLIED PHYSICS
(2017)
Article
Engineering, Electrical & Electronic
Conal E. Murray, Jay M. Gambetta, Douglas T. McClure, Matthias Steffen
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES
(2018)
Article
Physics, Applied
Conal E. Murray
JOURNAL OF APPLIED PHYSICS
(2018)
Review
Materials Science, Coatings & Films
Gregory Abadias, Eric Chason, Jozef Keckes, Marco Sebastiani, Gregory B. Thompson, Etienne Barthel, Gary L. Doll, Conal E. Murray, Chris H. Stoessel, Ludvik Martinu
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A
(2018)
Article
Physics, Applied
Conal E. Murray
JOURNAL OF APPLIED PHYSICS
(2019)
Article
Engineering, Electrical & Electronic
Conal E. Murray
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES
(2020)
Review
Materials Science, Coatings & Films
Cyril Cabral, Christian Lavoie, Conal Murray, Adam Pyzyna, Ken Rodbell
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A
(2020)
Article
Physics, Applied
Martin Sandberg, Vivekananda P. Adiga, Markus Brink, Cihan Kurter, Conal Murray, Marinus Hopstaken, John Bruley, Jason S. Orcutt, Hanhee Paik
Summary: Silicon-germanium (SiGe) is a versatile material with applications in superconducting quantum computing. By fabricating transmon quantum bits on SiGe layers and studying microwave loss properties at cryogenic temperatures, we achieved high quality factor Q values, confirming compatibility with state-of-the-art superconducting quantum circuits.
APPLIED PHYSICS LETTERS
(2021)
Article
Physics, Applied
R. T. Gordon, C. E. Murray, C. Kurter, M. Sandberg, S. A. Hall, K. Balakrishnan, R. Shelby, B. Wacaser, A. A. Stabile, J. W. Sleight, M. Brink, M. B. Rothwell, K. P. Rodbell, O. Dial, M. Steffen
Summary: This study assessed the impact of shielding configurations on the performance of superconducting qubits in a measurement environment. The results indicate that the qubit lifetimes are not significantly affected by changes in shielding configurations, but the quasiparticle tunneling rates are sensitive to these changes.
APPLIED PHYSICS LETTERS
(2022)
Review
Materials Science, Multidisciplinary
Conal E. Murray
Summary: The progress in quantum computing is driven by understanding qubit-state interactions with the environment, focusing on superconducting qubits and their mechanisms for relaxation and decoherence. Experimental techniques for assessing these mechanisms are highlighted, emphasizing the significance of dielectric loss and interactions with two-level systems. Future research should prioritize mitigating these effects for successful scaling of superconducting quantum computing.
MATERIALS SCIENCE & ENGINEERING R-REPORTS
(2021)
Article
Quantum Science & Technology
C. Kurter, C. E. Murray, R. T. Gordon, B. B. Wymore, M. Sandberg, R. M. Shelby, A. Eddins, V. P. Adiga, A. D. K. Finck, E. Rivera, A. A. Stabile, B. Trimm, B. Wacaser, K. Balakrishnan, A. Pyzyna, J. Sleight, M. Steffen, K. Rodbell
Summary: Non-equilibrium quasiparticles can cause decoherence in superconducting qubits. The tunneling rate of these quasiparticles is sensitive to the choice of capacitor material and geometry in the qubits. An anomalous temperature dependence of the quasiparticle tunneling rate below 100 mK is observed in some devices. This behavior may be caused by high transmission sites/defects within the oxide barriers of the Josephson junctions.
NPJ QUANTUM INFORMATION
(2022)
