Article
Nanoscience & Nanotechnology
Elham Heidari, Hamed Dalir, Farzad Mokhtari Koushyar, Behrouz Movahhed Nouri, Chandraman Patil, Mario Miscuglio, Deji Akinwande, Volker J. Sorger
Summary: With the increasing need for data processing, balancing high-speed and energy consumption in optoelectronic devices is becoming difficult. This paper introduces a double-layer graphene optical modulator integrated on a Silicon photonics platform, achieving 60 GHz speed, micrometer compactness, and high efficiency.
Article
Optics
Bin Shi, Nicola Calabretta, Ripalta Stabile
Summary: This paper demonstrates the use of a wavelength converter based on cross-gain modulation in a semiconductor optical amplifier (SOA) as a nonlinear function integrated within an all-optical neuron. The impact of fully integrated linear and nonlinear functions on the neuron output is investigated. The performance of the monolithically integrated neuron is found to be better than that of the corresponding hybrid device in terms of accuracy. These all-optical neurons are then used to simulate a two-layer photonic deep neural network for handwritten digit classification, achieving high accuracy and energy efficiency compared to state-of-the-art graphics processing units. The importance of scaling photonic integrated neural networks on chip is emphasized.
Article
Chemistry, Multidisciplinary
Jun Li, Mengqi Li, Kaiping Zhang, Lide Hu, Dongqing Li
Summary: This paper presents a novel ionic diode based on multiple-layer polyelectrolyte nanochannel network membranes. Bipolar and unipolar ionic diodes can be achieved by simply switching the modification solution. High rectification ratios of approximately 226 are achieved in single channels with the largest channel size of 2.5 μm. This design significantly reduces the channel size requirement and improves the output current level of ionic devices.
Article
Engineering, Electrical & Electronic
Zheyang Zheng, Wenjie Song, Li Zhang, Song Yang, Jin Wei, Kevin J. Chen
Summary: This study demonstrates a GaN ring oscillator based on high-performance CL inverters on a conventional p-GaN gate power HEMT platform, showcasing the feasibility of multi-stage monolithic integration of GaN CL gates and the potential of deploying CL circuits as peripheral circuits in all-GaN power integration. The integrated CL inverters in this work exhibit remarkable performances, with stringent rail-to-rail operations, suppressed static power dissipation, suitable transition threshold voltages, and wide noise margins.
IEEE ELECTRON DEVICE LETTERS
(2021)
Article
Multidisciplinary Sciences
Daniel Jercog, Nanci Winke, Kibong Sung, Mario Martin Fernandez, Claire Francioni, Domitille Rajot, Julien Courtin, Fabrice Chaudun, Pablo E. Jercog, Stephane Valerio, Cyril Herry
Summary: The study found that threat representations and avoidance behavior initiation are dynamically encoded in the overall population activity of dmPFC neurons in mice. While dmPFC population activity at stimulus onset encodes sustained threat representations driven by the amygdala, it does not predict action outcome. Transient dmPFC population activity before the initiation of action reliably predicts avoided from non-avoided trials, revealing the dynamic process of information linking threats with defensive actions within prefrontal networks.
Article
Optics
Ye Luo, Chunlei Sun, Hui Ma, Maoliang Wei, Junying Li, Jialing Jian, Chuyu Zhong, Zequn Chen, Renjie Tang, Kathleen A. Richardson, Hongtao Lin, Lan Li
Summary: Flexible integrated photonics is a rapidly emerging technology with wide-ranging applications. This study demonstrates the design and fabrication of essential flexible passive devices for integrated photonic circuits, achieving superior performance.
Article
Materials Science, Multidisciplinary
Zongchao Liu, Shuai Teng, Gongfa Chen, Linhui Wu, Junwei Yang, Fangsen Cui, Pei Ho
Summary: A new stent-graft design with slits was proposed to improve sealing effect and maintain blood flow in supra-aortic branches during thoracic endovascular aortic repair (TEVAR). Mechanical evaluations and fluid dynamic analysis showed satisfactory results, suggesting potential applicability in dealing with technical difficulties at the aortic arch.
MATERIALS & DESIGN
(2021)
Article
Engineering, Electrical & Electronic
Yinghao Ye, Thijs Ullrick, Wim Bogaerts, Tom Dhaene, Domenico Spina
Summary: This paper presents a new equivalent circuit modeling and simulation approach for accurate and robust time-domain simulations of passive photonic integrated circuits (PICs) in standard SPICE simulators. By considering the different nature of optical and electronic signals, a novel concept of equivalent voltage and current for optical waveguides has been proposed, simplifying the optical to electronic ports conversion and supporting bidirectional signal propagation.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2022)
Article
Chemistry, Analytical
Shirin Kamali, Raziyeh Arabahmadi, Masoumeh Orojloo, Saeid Amani
Summary: A novel azo Schiff base chemosensor was synthesized and showed colorimetric response towards Cr3+, CN-, and HSO4-. The chemosensor exhibited high sensitivity and selectivity, and successfully detected CN- in apple seed samples.
MICROCHEMICAL JOURNAL
(2023)
Article
Optics
Ang Li, Chang Wang, Feixia Bao, Wenji Fang, Yuxin Liang, Rui Cheng, Shilong Pan
Summary: This research presents an integrated single-shot spectrometer that addresses the issues of high temperature sensitivity and poor bandwidth-resolution ratio. It achieves a wide operation bandwidth and high resolution, and can operate within a wide temperature range without additional power consumption for temperature management.
Article
Thermodynamics
Kun Wang, Fu Chen, Jianyang Yu, Yanping Song, Ghader Ghorbaniasl
Summary: This study comprehensively investigates the impact of six uncertain operating conditions on the aerodynamic performance of a turbine, and uses a new UQ framework to reduce computational cost. The research findings reveal that uncertain operating conditions can cause variations in energy loss, which directly affects the efficiency of the turbine. The suction surface and trailing edge of the blade are particularly sensitive to uncertain operating conditions. Inlet total pressure and outlet static pressure are identified as the primary factors impacting turbomachinery aerodynamics.
Article
Engineering, Multidisciplinary
Yan Zhu, Qiushuang Chi, Yan Gong, Suna Guo, Fan Wang
Summary: It is important to study the dynamic performance of flowmeters to enhance their measurement accuracy in complex working conditions. The dynamic performance of a turbine flowmeter is investigated through experiments and numerical simulations under step flow and pulsatile flow conditions. The results indicate that the impeller's mass, length, number of blades, blade angle, and tip radius are the main factors influencing the dynamic performance of the turbine flowmeter. An optimized scheme is proposed based on the analysis, with feasibility confirmed by CFD simulations and experiments. The optimized model significantly improves the dynamic performance of the turbine flowmeter, reducing the step response time constant by 50% and increasing the cutoff frequency of the amplitude-frequency characteristic by 87.7% under pulsatile flow conditions. The overall measurement errors for the pulsatile flow experiments are within 2%.
Article
Nanoscience & Nanotechnology
Yifu Guo, Mingqun Yang, Junyang Deng, Chenming Ding, Chunhui Duan, Mengmeng Li, Ling Li, Ming Liu
Summary: By fine-tuning the supramolecular assembly of two thiazole flanked naphthalene diimide-based conjugated polymers, well-defined fibrillar morphology monolayers with approximately 2.5 nm thickness were successfully grown. The resulted monolayer FETs demonstrated high electron mobility up to 0.25 cm(2) V-1 s(-1), setting a new record for n-type polymer monolayer FETs. Additionally, the first demonstration of polymer monolayer complementary integrated circuits was achieved, with a record-high inverter gain of 113, which is identical to the best polymer thin-film inverters.
ADVANCED ELECTRONIC MATERIALS
(2023)
Article
Multidisciplinary Sciences
Minh A. Trail, Chong Zhang, Theodore J. Morin, Lin Chang, Sabyasachi Barik, Zhiquan Yuan, Woonghee Lee, Glenn Kim, Aditya Malik, Zeyu Zhang, Joel Guo, Heming Wang, Boqiang Shen, Lue Wu, Kerry Vahala, JohnE Bowers, Hyundai Park, Tin Komljenovic
Summary: Integrated photonics has greatly impacted various technologies in modern society, offering scalability, weight, cost and power efficiency. We present a new generation of integrated photonics by combining III-V materials with silicon nitride waveguides, enabling the fabrication of fully integrated photonic integrated circuits (PICs) operating at submicrometre wavelengths. This integration strategy unlocks a broad range of new photonics applications, with exceptional performance at short wavelengths.
Article
Construction & Building Technology
Qian Jin, Xiangyu Long, Runqi Liang
Summary: This study numerically investigated the energy-saving potential of combining thermochromic glazing and phase-change materials into an adaptive glazing system, and found that it can reduce total heat gain in summer but is less effective than normal double-glazing units in winter.
ENERGY AND BUILDINGS
(2022)
Article
Engineering, Electrical & Electronic
Masanao Yamaoka, Chihiro Yoshimura, Masato Hayashi, Takuya Okuyama, Hidetaka Aoki, Hiroyuki Mizuno
IEEE JOURNAL OF SOLID-STATE CIRCUITS
(2016)
Article
Physics, Applied
N. Lee, R. Tsuchiya, G. Shinkai, Y. Kanno, T. Mine, T. Takahama, R. Mizokuchi, T. Kodera, D. Hisamoto, H. Mizuno
APPLIED PHYSICS LETTERS
(2020)
Article
Physics, Applied
Noriyuki Lee, Ryuta Tsuchiya, Yusuke Kanno, Toshiyuki Mine, Yoshitaka Sasago, Go Shinkai, Raisei Mizokuchi, Jun Yoneda, Tetsuo Kodera, Chihiro Yoshimura, Shinichi Saito, Digh Hisamoto, Hiroyuki Mizuno
Summary: We developed a hybrid chip consisting of a 16 x 8 quantum dot array and a CMOS circuit (Q-CMOS). By optimizing the transistor design of Q-CMOS made from fully depleted (FD)-SOI, we were able to selectively control each of the 16 x 8 quantum dots and observed their characteristic variations for the first time. Through this study, we discovered the importance of suppressing variability in order to realize a large-scale quantum computer. We also found that the characteristics of the quantum dots change depending on the applied gate voltages.
JAPANESE JOURNAL OF APPLIED PHYSICS
(2022)
Article
Multidisciplinary Sciences
Tatsuya Tomaru, Chihiro Yoshimura, Hiroyuki Mizuno
Summary: This article presents a solution for surface code operation on sparse qubit arrays by placing qubits on the edges and nodes of a two-dimensional grid and dividing them into different groups. This makes surface code applicable to sparse arrays.
SCIENTIFIC REPORTS
(2022)
Article
Physics, Applied
Takeru Utsugi, Noriyuki Lee, Ryuta Tsuchiya, Toshiyuki Mine, Raisei Mizokuchi, Jun Yoneda, Tetsuo Kodera, Shinichi Saito, Digh Hisamoto, Hiroyuki Mizuno
Summary: Loading single electrons into an array of quantum dots is essential for developing scalable silicon-based quantum computers, but the variability of quantum dot characteristics presents significant challenges. In this study, we used a single-electron pump to load single electrons into a quantum dot array, achieving 100 MHz operation with 99% accuracy at 4 K. By controlling the timing of subsequent gates, we minimized jitter in electron transfer to less than 10 ns, suitable for typical silicon qubit operating speeds around 1 MHz.
JAPANESE JOURNAL OF APPLIED PHYSICS
(2023)
Article
Computer Science, Information Systems
Takeshi Kato, Yasuyuki Kudo, Junichi Miyakoshi, Misa Owa, Yasuhiro Asa, Takashi Numata, Ryuji Mine, Hiroyuki Mizuno
Summary: This article proposes a novel concept of Cyber-Human Social System (CHSS) and a diverse and pluralistic 'mixed-life society', which enhances the Cyber-Physical System (CPS) and supports the social vision of Society 5.0. The CHSS intervenes in individual behavior pro-socially and supports consensus building, and a Cyber-Human Social Co-Operating System (Social Co-OS) embodies this concept. The article describes the technical content and implementation of the basic functions of the Social Co-OS.
IET CYBER-PHYSICAL SYSTEMS: THEORY & APPLICATIONS
(2023)
Proceedings Paper
Computer Science, Artificial Intelligence
Kanako Esaki, Tadayuki Matsurnura, Chihiro Yoshimura, Hiroyuki Mizitno
Summary: This paper proposes an autonomous agent with a notion of self to naturally avoid irreparable failures of its own body. Through definitions of controllability and predictability, the self can extend to include the agent's body and objects in the environment. By making the self-recognition block a virtual observable, the agent can explicitly handle controllability and predictability, leading to successful handling of uncertain environments.
2022 IEEE SYMPOSIUM SERIES ON COMPUTATIONAL INTELLIGENCE (SSCI)
(2022)
Proceedings Paper
Computer Science, Artificial Intelligence
Kanako Esaki, Tadayuki Matsumura, Kiyoto Ito, Hiroyuki Mizuno
Summary: This research introduces an embodied system based on the free energy principle for sensorimotor visual perception, aiming to model the rules that living things follow. Evaluation using the MNIST dataset demonstrates that the system can recognize characters through active and perceptual inferences, and replicates human confirmation bias on the system.
MACHINE LEARNING AND PRINCIPLES AND PRACTICE OF KNOWLEDGE DISCOVERY IN DATABASES, ECML PKDD 2021, PT I
(2021)
Proceedings Paper
Automation & Control Systems
Takeshi Kato, Yasuhiro Asa, Yasuyuki Kudo, Masanao Yamaoka, Hiroyuki Mizuno
2015 54TH ANNUAL CONFERENCE OF THE SOCIETY OF INSTRUMENT AND CONTROL ENGINEERS OF JAPAN (SICE)
(2015)
Proceedings Paper
Engineering, Electrical & Electronic
Masanao Yamaoka, Chihiro Yoshimura, Masato Hayashi, Takuya Okuyama, Hidetaka Aoki, Hiroyuki Mizuno
2015 IEEE INTERNATIONAL SOLID-STATE CIRCUITS CONFERENCE DIGEST OF TECHNICAL PAPERS (ISSCC)
(2015)
Article
Engineering, Electrical & Electronic
Yusuke Kanno, Yuki Kondoh, Takahiro Irita, Kenji Hirose, Ryo Mori, Yoshihiko Yasu, Shigenobu Komatsu, Hiroyuki Mizuno
IEEE JOURNAL OF SOLID-STATE CIRCUITS
(2007)
Article
Engineering, Electrical & Electronic
Y Kanno, H Mizuno, N Oodaira, Y Yasu, K Yanagisawa
IEICE TRANSACTIONS ON ELECTRONICS
(2004)
Article
Engineering, Electrical & Electronic
HA Tanaka, A Hasegawa, H Mizuno, T Endo
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS
(2002)
Article
Engineering, Electrical & Electronic
Yusuke Kanno, Hiroyuki Mizuno, Yoshihiko Yasu, Kenji Hirose, Yasuhisa Shimazaki, Tadashi Hoshi, Yujiro Miyairi, Toshifumi Ishii, Tetsuya Yamada, Takahiro Irita, Toshihiro Hattori, Kazumasa Yanagisawa, Naohiko Irie
IEEE JOURNAL OF SOLID-STATE CIRCUITS
(2007)