Review
Chemistry, Multidisciplinary
Dawei Hua, Ranhua Xiong, Kevin Braeckmans, Benoit Scheid, Chaobo Huang, Felix Sauvage, Stefaan C. De Smedt
Summary: Concentration gradients play a crucial role in natural phenomena and have significant applications in biomedical and pharmaceutical fields. While generating gradients in solutions is well understood, incorporating them in solid materials remains a challenge. This study reviews methods for generating gradients in both solutions and solid materials, and discusses the potential applications of innovative materials with gradients in biomedicine and pharmacy.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Po-Hsun Chen, Chih-Yang Lin, Ting-Chang Chang, Jason K. Eshraghian, Yu-Ting Chao, Wei D. Lu, Simon M. Sze
Summary: Resistive random-access memory (RRAM) crossbar arrays have shown great potential for neuromorphic computing, in-memory computing, and high-density storage-class memory applications, but leakage currents through parasitic sneak paths remain a major obstacle. The use of inherent selectors native to switching, such as niobium oxide (NbOx), can help reduce sneak path currents without sacrificing structural simplicity. Experimental results demonstrate abnormal phenomena in the reset process, and the switching behaviors of NbOx devices make them attractive candidates for future memory and in-memory computing applications.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Multidisciplinary Sciences
Charles Marfo Awuah, Patrick Danuor, Jung-Ick Moon, Young-Bae Jung
Summary: A novel method of improving the Q factor of a wireless power transfer coil is proposed, which involves reducing the AC losses in the inner turns by varying the trace pitch, width, and thickness. Numerical analysis and prototype measurements show a significant increase in Q.
SCIENTIFIC REPORTS
(2023)
Article
Engineering, Electrical & Electronic
Christopher Grimm, Naveen Verma
Summary: This paper explores training on In-Memory Computing (IMC) hardware and proposes two developments to improve efficiency and optimize energy consumption. Energy modeling based on a measured silicon prototype demonstrates significant energy savings.
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS
(2022)
Article
Optics
Ying Zhang, Qiang Liu, Chenyang Mei, Desheng Zeng, Qingzhong Huang, Xinliang Zhang
Summary: The study introduces and investigates a quality factor-controllable system consisting of two directly coupled microring resonators, demonstrating wide-range controllable Q factors on silicon-on-insulator. The influences of spectral detuning and coupling strength between resonators on Q factor variation are studied in detail experimentally. The research explores applications in optical buffering and tunable fast-to-slow/slow-to-fast light switching, showing potential for on-chip optical communications and quantum information processing.
PHOTONICS RESEARCH
(2021)
Article
Computer Science, Information Systems
Enrico Russo, Maurizio Palesi, Davide Patti, Salvatore Monteleone, Giuseppe Ascia, Vincenzo Catania
Summary: DNN hardware accelerators enable complex inferences on resource-constrained IoT devices. This article introduces EPOCA, an end-to-end Pareto optimization method for determining the accelerator's architecture and layer mappings that optimize multiple objectives simultaneously. The results show that EPOCA provides a range of choices for tradeoffs in specific applications.
IEEE INTERNET OF THINGS JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
Hiroyuki Hama, Sadao Miura
Summary: Tohoku University constructed a 300 MeV electron linac in 1967 for nuclear physics and neutron science research. Despite some parts collapsing in the 2011 earthquake, high-intensity beams are still supplied. The possibility of introducing a new SRF cavity system to expand research activities is being considered.
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
(2021)
Review
Materials Science, Ceramics
Franz Kamutzki, Sven Schneider, Jan Barowski, Aleksander Gurlo, Dorian A. H. Hanaor
Summary: Silicate ceramics show great potential as high frequency dielectrics, especially in millimetre wave applications. The focus is on achieving high quality factors and low, thermally stable permittivities in ordered silicate structures.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Review
Chemistry, Multidisciplinary
Nikolaos Charitonidis, Andrea Longhin, Michelangelo Pari, Elisabetta Giulia Parozzi, Francesco Terranova
Summary: This paper reviews the design of high-precision neutrino beams, their current limitations, and the latest techniques to overcome these limitations. Emphasis is placed on monitored neutrino beams and advanced diagnostics, as well as ab-initio measurements of neutrino energy to remove biases in determining cross sections.
APPLIED SCIENCES-BASEL
(2021)
Article
Engineering, Electrical & Electronic
Rahmi Bachir, Badaoui Hadjira, Abri Mehadji
Summary: An 8-channel demultiplexer based on 2D photonic crystals has been proposed and simulated in this paper for WDM and DWDM applications, with high quality factors and low crosstalk values achieved.
OPTICAL AND QUANTUM ELECTRONICS
(2021)
Article
Neurosciences
Guilherme Blazquez Freches, Koen Haak, Christian F. Beckmann, Rogier B. Mars
Summary: This study introduces a method based on diffusion magnetic resonance imaging (MRI) tractography and spectral embedding gradient mapping to reveal principles of gray and white matter organization, with the ability to identify connectivity gradients in prefrontal and occipital gray matter. Leveraging the use of tractography, gradients within white matter bundles can also be observed.
HUMAN BRAIN MAPPING
(2021)
Article
Chemistry, Physical
Yu Feng, Jin-Peng Xue, Tian-Dong Zhang, Qing-Guo Chi, Jing-Lei Li, Qing-Guo Chen, Jian-Jun Wang, Long-Qing Chen
Summary: The study demonstrates that by introducing double gradients into the microstructure design, the energy density of polymer nanocomposites can be improved, achieving optimized energy storage performance.
ENERGY STORAGE MATERIALS
(2022)
Article
Physics, Multidisciplinary
S. Geerthana, T. Sridarshini, S. Syedakbar, S. Nithya, V. R. Balaji, Arun Thirumurugan, Shanmuga Sundar Dhanabalan
Summary: In this article, a chain-shaped photonic crystal-based ring resonator (PhCRR) is designed and used as a channel drop filter (CDF) using two-dimensional photonic crystals. The proposed PhCRR achieves a transmission efficiency of 99.7% and a quality factor of 4550 at a wavelength of 1551 nm. The functionality of the drop filter is analyzed by calculating the electric field distribution and using numerical analysis methods.
Article
Energy & Fuels
Siddharth Sharma, Ravikant Adalati, B. S. Unnikrishnan, Ananya Bansal, Pramod Kumar, Meenakshi Sharma, P. Gopinath, Ramesh Chandra
Summary: In this study, a flexible and biocompatible supercapacitor was successfully fabricated by depositing niobium nitride (NbN) on a copper foam substrate. The electrode demonstrated a highly porous structure with uniform distribution of NbN. Cell viability studies showed no significant cytotoxic effects on the cell lines. The supercapacitor exhibited excellent electrochemical stability and performance, and could operate in various physiological fluids.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Materials Science, Ceramics
Bharti, Gulzar Ahmed, Yogesh Kumar, Shatendra Sharma
Summary: Density functional theory calculations were used to investigate the density of states and quantum capacitance of pure and doped niobium nitrides. The results show that NbN is a promising candidate for supercapacitor electrodes, and doping with cobalt can significantly increase the quantum capacitance.
CERAMICS INTERNATIONAL
(2021)
