Article
Physics, Applied
Ryo Ishikawa, Minori Goto, Hikaru Nomura, Yoshishige Suzuki
Summary: This study investigates the effect of applying a voltage perpendicular to the film plane on the magnetic domain structure and skyrmions using a Ta/Co-Fe-B/Ta/MgO junction. The results show that voltage-induced modulation of the magnetic domain structure and creation/annihilation of skyrmions are possible. Additionally, manipulation of skyrmions can be achieved through repulsive magnetic dipole interaction with voltage-created skyrmions.
APPLIED PHYSICS LETTERS
(2022)
Article
Engineering, Multidisciplinary
Bhumaiah Jula, Raj Kumar Jarial, Anant Kumar Verma, Pedro Roncero-Sanchez, Josep M. Guerrero, Tiago Davi Curi Busarello, Hafiz Ahmed
Summary: This article proposes a robust and enhanced three-phase fundamental frequency estimation algorithm for the electric aircraft grid, which has been experimentally validated to be effective and practical.
Article
Physics, Multidisciplinary
Yicheng Bao, Scarlett S. Yu, Loic Anderegg, Sean Burchesky, Derick Gonzalez-Acevedo, Eunmi Chae, Wolfgang Ketterle, Kang-Kuen Ni, John M. Doyle
Summary: A fast transport method for ultracold molecules has been developed using an electronically focus-tunable lens combined with an optical lattice, achieving high transport speed and efficiency. This enables the realization of large numerical aperture optical access and long trap lifetimes required for many studies in the field of quantum information and quantum simulation.
NEW JOURNAL OF PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Masahiro Tsuruta, Tomotaka Fukuyama, Tatsuki Tahara, Yasuhiro Takaki
Summary: This study proposes a technique based on the convolution theorem to reduce the calculation time for image interpolations, which is more effective than conventional techniques and does not depend on the size of interpolation kernels.
APPLIED SCIENCES-BASEL
(2021)
Article
Automation & Control Systems
Ji-Sun Park, Sang-Young Oh, Ho-Lim Choi
Summary: This paper investigates the problem of global stabilisation of approximate feedback linearised systems with perturbed nonlinearity using an event-triggered control. The perturbed nonlinearity is categorised into three cases and a characterisation function is obtained for each case. An event-triggered controller with a gain-scaling factor and an event-triggering condition based on the characterisation function are proposed. A control parameter selection rule is suggested based on the system analysis results, depending on the priority on either system output regulation speed or size of the interexecution times. The validity of the control approach is demonstrated through practical examples.
INTERNATIONAL JOURNAL OF SYSTEMS SCIENCE
(2023)
Article
Engineering, Electrical & Electronic
Shahabeddin Najafi, Yazdan Batmani, Hassan Bevrani
Summary: In this paper, an event-triggered wide-area damping controller (ETWADC) is proposed to address the issue of communication network congestion in centralized controllers. The proposed controller reduces the utilization of the communication network and saves energy for resources. Simulation results show that the proposed controller significantly reduces the communication network usage.
ELECTRIC POWER SYSTEMS RESEARCH
(2023)
Article
Nanoscience & Nanotechnology
Mahmoud M. Omar, Omiya Ali Hasan, Randa Mohammed Zaki, Nermin E. Eleraky
Summary: The study successfully prepared gemcitabine-loaded targeted liposomes, with GMC-SoS Fo LP demonstrating a 6.51-fold increase in cellular uptake under ultrasound. Biodistribution study showed that GMC concentration in tumors treated with GMC-SoS-Fo LPs (with ultrasound) improved 2.89-fold that of free GMC. In vivo, GMC-SoS Fo LPs showed the highest antiproliferative and antitumor action on ovarian cancer.
INTERNATIONAL JOURNAL OF NANOMEDICINE
(2021)
Article
Biochemical Research Methods
Lei Gao, Zhengjie Wu, Zhuoquan Chen, Ruiming Kong, Yuting Song, Teng Ma, Cuixia Dai
Summary: Endoscopic optical coherence tomography (OCT) enables subsurface imaging of tubular organs and cavities. A new technique called endoscopic OCT angiography (OCTA) was successfully implemented using an internal-motor-driving catheter. This study proposes an OCTA technique using an external-motor-driving catheter, which overcomes the mechanical instability and allows for visualization of microvasculature and capillaries.
JOURNAL OF BIOPHOTONICS
(2023)
Article
Computer Science, Artificial Intelligence
Hui Gao, Le Yin
Summary: This article proposes a biologically motivated two-level event-triggered mechanism for designing a neuroadaptive controller with exponential convergence property. The mechanism incorporates static and dynamic features, inspired by biological responses to environmental changes, in order to achieve exponential convergence of plant state by introducing time-varying control gain. The effectiveness of the proposed control scheme is validated through numerical simulations, ensuring no Zeno behavior due to a lower bound on the minimum interevent time interval.
IEEE TRANSACTIONS ON NEURAL NETWORKS AND LEARNING SYSTEMS
(2022)
Article
Chemistry, Multidisciplinary
S. Ghosh, A. R. Gul, P. Xu, S. Y. Lee, R. Rafique, Y. H. Kim, T. J. Park
Summary: This study established a dual-mode nanocarrier for combining chemotherapy and photodynamic therapy by embedding chemotherapeutic drugs and ROS generators onto metal-organic frameworks. By enhancing targeting efficiency with a prostate cancer-specific ligand and controlling drug release with a polymer coating, a more tightly controlled release of drug was achieved. The results show potential for an NIR-based targeted PDT system with burst release of drug and ROS to improve synergistic therapeutics.
MATERIALS TODAY CHEMISTRY
(2022)
Article
Engineering, Electrical & Electronic
M. J. Maleki, M. Soroosh
Summary: In this study, a two-dimensional photonic crystal is proposed for digital multiplexing operation. The proposed structure shows better performance and is promising for high-speed processing. Simulation results confirm the suitability of the proposed structure for all-optical multiplexing operation.
OPTICAL AND QUANTUM ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Zhouyi Hu, Zichuan Zhou, Calvin Chun Kit Chan, Zhixin Liu
Summary: Optical switching technology can increase the capacity of data center networks, reduce switching time and power consumption. To address the challenge of low switching time, researchers have proposed an equalizer state caching technique to reduce equalizer adaptation time and computation power consumption.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Automation & Control Systems
K. Senthilkumar, Avinash Kumar Roy, K. Srinivasan
Summary: This paper presents a feedback control design based on an event-triggered estimator for networked control systems (NCS) under stochastic effects and correlated noises. The proposed method incorporates an event-triggered mechanism at the sensor node to regulate data transmission and reduce energy consumption and network traffic. The estimator uses a predicted sensor measurement in case of data packet loss, improving performance and reducing computation burden. The proposed method achieves mean-square stability and is suitable for online estimations with model mismatch and correlated noises.
Article
Physics, Multidisciplinary
Simon Wili, Tilman Esslinger, Konrad Viebahn
Summary: We propose a method for separating trapped atoms in optical lattices by large distances using accordion lattices. By transferring atoms between two lattices of variable spacing, we can achieve arbitrarily large atom separations with only a small numerical aperture. Numerical simulations and a proof-of-principle experiment show the effectiveness of our method, which has applications in quantum computing and quantum simulation, as well as in biological systems.
NEW JOURNAL OF PHYSICS
(2023)
Article
Multidisciplinary Sciences
Molly A. May, Nicolas Barre, Kai K. Kummer, Michaela Kress, Monika Ritsch-Marte, Alexander Jesacher
Summary: Scattering in biological tissues is a major hindrance for in vivo optical imaging, but wavefront shaping has shown promise in overcoming this challenge. The authors introduced an algorithm called DASH, which utilizes holographic phase stepping interferometry to quickly update phase information after each measurement, leading to rapid improvement in wavefront correction. This method achieved a significant increase in signal enhancement compared to previous technologies after just one measurement iteration.
NATURE COMMUNICATIONS
(2021)