Open AccessCCS ChemistryRESEARCH ARTICLE6 Jun 2022Hybrid Optical-Electrical Perovskite Can Be a Ferroelastic Semiconductor Changyuan Su†, Mengmeng Lun†, Yidan Chen, Yichen Zhou, Zhixu Zhang, Ming Peizhi Huang, Dawei Fu and Yi Zhang Su† Ordered Matter Science Research Center, Jiangsu Key Laboratory for Applications of Molecular Ferroelectrics, Southeast University, Nanjing 211189 Institute the Ministry Education Advanced Catalysis Materials, Zhejiang Normal Jinhua 321004 , Lun† Chen Zhou...

With the rise of unmanned driving and intelligent transportation research, great progress has been made in vehicle detection technology. The purpose this paper is employing method deep learning to study algorithm, which primary-stage target algorithms, namely, YOLOv3 algorithm SSD are adopted. Therefore, first processes image data open-source road dataset for training. Then, model trained by using algorithms show effect, respectively. result comparing effects two models on vehicles....

In this letter, a microwave rectifier array using an automatic input power distribution technique (AIPDT) is proposed to achieve high conversion efficiency over wide dynamic range. The employs two cells operating at low- and high-power levels, respectively, utilizes AIPDT distribute the RF between them according level. way, RF-dc (PCE) low reflection coefficient range are achieved. For validation, 2.4 GHz was designed, fabricated, characterized. experimental results show that PCE maintains...

With the rapid growth of Internet Things and Cyber-Physical Systems, widespread sensor deployment has become essential. However, high costs building networks limit their scale coverage, making fine-grained challenging. Inductive Spatio-Temporal Kriging (ISK) addresses this issue by introducing virtual sensors. Based on graph neural (GNNs) extracting relationships between physical sensors, ISK can infer measurements sensors from current methods rely conventional message-passing mechanisms...

In the context of mountain tunnel mining through drilling and blasting method, recognition lithology from palm face images is crucial for comprehensive analysis geological conditions prevention risks. However, complexity background in acquired images, coupled with an insufficient data sample size, poses challenges. While incorporation deep learning technology has enhanced accuracy, issues persist, including inadequate feature extraction suboptimal accuracy. To address these challenges, this...

Organic-inorganic hybrid materials with switchable properties have significant potential applications in intelligent devices. There are some conventional ways to obtain optical and/or electric multiple responses, such as asymmetric design, chirality, doping, and structural dimension materials. Among them, the homochirality strategy is one of best regulate molecular structure symmetry, thereby ensuring second-harmonic generation (SHG) dielectric dual response characteristics. Here, we report...

This paper proposes a simple-structured memristive neural network, which incorporates self-connections of memristor synapses alongside both unidirectional and bidirectional connections. Different from other multi-scroll chaotic systems, this network structure has more concise three-neuron structure. simple can generate number attractors in manageable quantities shows the characteristics coexisting amplitude control. In particular, when parameters are changed, break up around center gravity...

A novel integrated rectifier-transmitter (IRT) that targets to reduce the power consumption of uplink communication a wireless sensor is presented in this letter. The proposed IRT fully utilizes second harmonic generated by rectifier as carrier and modulates amplitude through reconfigurable bandstop filter (BSF) dynamically biased baseband signal. As proof concept, an prototype operating at 2.4 GHz has been implemented characterized. We report conversion efficiency (PCE) prove modulation...

In human skeleton-based action recognition, graph convolutional networks (GCN) have shown significant success. However, existing state-of-the-art methods struggle with complex actions, such as figure skating, where performance is often unsatisfactory. This issue arises from two main factors: the lack of shift, scale, and rotation invariance in GCN, making them especially vulnerable to perspective distortions 2D coordinates, high variability displacement velocity, which depends more on...

To date, the human balance assessment is mainly achieved by measuring center of pressure (COP) trajectory upright posture. However, COP-based metrics provide inconclusive results under certain circumstances, due to lack relevance with body mechanism. This paper developed a novel framework measure variability in sway based on Poincaré analysis enhance assessment. It provided nonlinear parameters SD1, SD2, and their ratio SD1/SD2 as quantitative indicators local global regulation capacities....

Abstract Variable renewable energy integration poses a challenge to the secure operation of power system, especially for frequency security. How provide response maintain satisfactory performance is still an open question. Concentrating solar power, with characteristics and synchronous units, potential solution problem. This paper discusses how concentrating plants can be employed ensure security proposes its dynamic control strategy accordingly. The proposed contained in novel unit...

Pressure and flame surface oscillations are common in supersonic combustion instability. Understanding the characteristics, generation, maintenance, interaction mechanisms of these is crucial. An experimental setup with an alcohol heater was used to study injection positions fuel quantities a dual-cavity scramjet chamber. High-frequency pressure sensors high-speed equipment were employed this research. The most significant oscillation occurred at global equivalence ratio 1.2 frequency 300 Hz...

Abstract The grid‐connection of high‐permeability new energy through voltage‐source converters (VSCs) brings oscillation risks to the power system, which seriously threatens stable operation system. Therefore, an evaluating method based on modal analysis is proposed investigate characteristics in a multi‐VSC grid‐connected Initially, analogy method, output admittance model controlled VSCs (VC‐VSCs) and current‐source (CC‐VSCs) established. Subsequently, system constructed. Then, introduced...

Aerosol jet printing (AJP) is a promising method for microscale digital additive manufacturing printed electronics. However, it requires high sintering temperature (280 ° C) and long time (e.g. 12 hours on glass substrate) to guarantee highly conductive metallic structure, which confined AJP limited types of substrates applicati ons. In this paper, fabrication use cellulose fiber paper as proposed. With the proposed approach, reduced 80 C shortened 220 minutes papers. The structure can have...

Different Solutions and algorithm to the Multi-Armed Bandit (MAB) problem using method of exploration exploitation trade-off, including Thompson Sampling. Which proved have competitive results compared popular methods solution. Formulated MAB into Multi-robot Search problem. Showed data solving multi-robot search with Dynamic sampling.

Aiming at the problem that main body cannot achieve obstacle avoidance when end of rope-driven hyper-redundant manipulator performs task, this paper proposes an algorithm based on gradient projection method. In method, four control points are evenly distributed robot arm, and shortest distance between point calculated in real time is used as optimization index, combined with modeling dynamic selection amplification factor, to better effect. A six-joint twelve-degree-of-freedom was for...