Results 61 to 70 of about 9,269 (274)

Flexoelectricity in Photoconversion: Fundamentals, Materials, and Outlooks

open access: yesAdvanced Science, EarlyView.
Mechanical bending of a flexible cantilever induces a strain gradient in the photoactive material. The resulting flexoelectric field couples with photovoltaic and photoconductive effects, modulating charge generation, separation, and collection. A comparative analysis of oxide perovskites, halide perovskites, and two‐dimensional materials is presented,
Xiang Huang, Feng Li, Rongkun Zheng
wiley   +1 more source

RWT-SLAM: Robust Visual SLAM for Highly Weak-textured Environments [PDF]

open access: yes, 2022
As a fundamental task for intelligent robots, visual SLAM has made great progress over the past decades. However, robust SLAM under highly weak-textured environments still remains very challenging.
Zhao, Xijun   +4 more
core  

DM-SLAM: A Feature-Based SLAM System for Rigid Dynamic Scenes

open access: yesISPRS International Journal of Geo-Information, 2020
Most Simultaneous Localization and Mapping (SLAM) methods assume that environments are static. Such a strong assumption limits the application of most visual SLAM systems.
Junhao Cheng   +4 more
doaj   +1 more source

Mobile Robot Localization and Mapping Algorithm Based on the Fusion of Image and Laser Point Cloud

open access: yesSensors, 2022
Given the lack of scale information of the image features detected by the visual SLAM (simultaneous localization and mapping) algorithm, the accumulation of many features lacking depth information will cause scale blur, which will lead to degradation and
Jun Dai   +5 more
doaj   +1 more source

Sub‐Terahertz Memristor Switches Using MoS2 by Liquid–Liquid Interface Assembly

open access: yesAdvanced Science, EarlyView.
This work introduces application‐ready sub‐terahertz memristor switches fabricated from electrochemically exfoliated MoS2 nanosheets assembled at a liquid–liquid interface. The devices exhibit robust unipolar resistive switching, low insertion loss, and high isolation across 10–110 GHz.
Tomás Mingates   +15 more
wiley   +1 more source

Monocular vision based indoor simultaneous localisation and mapping for quadrotor platform [PDF]

open access: yes, 2012
An autonomous robot acting in an unknown dynamic environment requires a detailed understanding of its surroundings. This information is provided by mapping algorithms which are necessary to build a sensory representation of the environment and the ...
Agarwal, Saurav
core  

Analysis of visual SLAM for forest environments [PDF]

open access: yes
The objective of this dissertation is to investigate visual navigation for robotics in the forest domain. Visual Simultaneous Localisation and Mapping (SLAM) is a core technology for deployment of robotic systems in many use cases, allowing a robot to ...
Garforth, James
core   +1 more source

Intrinsically Mitochondria‐Targeting Nanozyme via Coordination‐Assembly of Natural Quercetin for Cascade Antioxidant Therapy of Cerebral Ischemia‐Reperfusion Injury

open access: yesAdvanced Science, EarlyView.
This study uncovers that quercetin naturally targets mitochondria. By coordinating quercetin with Fe3+, we engineer an ultrasmall cascade nanozyme (MCN) with superoxide dismutase‐catalase activities. MCN crosses the damaged blood–brain barrier, scavenges mitochondrial ROS, prevents mitochondrial DNA leakage, and blocks the cGAS‐STING pathway, thereby ...
Wenxuan Zheng   +14 more
wiley   +1 more source

City-scale visual SLAM [PDF]

open access: yes, 2020
Visual simultaneous localization and mapping (visual SLAM) is a method for consistent self-contained localization using visual observations. Visual SLAM can produce very precise pose estimates without any specialized hardware, enabling applications such ...
Anttila, Jesse
core  

Visual simultaneous localization and mapping algorithm of coal mine underground considering image enhancement

open access: yesGong-kuang zidonghua, 2023
The visual simultaneous localization and mapping (SLAM) algorithm based on the feature point method has certain applications in coal mines. However, due to factors such as uneven lighting, variable lighting, and alternating light and dark areas, the ...
FENG Wei   +5 more
doaj   +1 more source

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