Journal of Materials Chemistry C
·
2021
·Vol. 9
·期 31
·10005-10012
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IF 7.393
Lili Li,Xiaoshuang Yu,Abdur Raheem Aleem,Xiaolin Zhang,Yue Zhao,Xinzhi Wang,Yanying Zhang,Yao Wang,Wenfei Shen,Olle Inganäs,Jianguo Tang
In this article, a natural biological porous material, from living diatoms, is used to prepare new UV-protection hybrid materials with an Eu3+-complex. By removing the organic protoplasm of living diatoms, the exoskeleton with a regular pore structure arrangement was obtained. The Eu3+-complex was chemically bonded to the exoskeleton modified by the silane coupling agent (3-aminopropyl)trimethoxy silane (APTMS). Compared with pure Eu3+-complexes, the fluorescence intensity of this hybrid material was increased by approximately 10 times. For illustrating its applications in the field of UV-protection, we mixed the USDU with polyacrylonitrile to produce flexible and transparent polymer films. The hybrid composite film (USDU@PAN) achieved partial absorption of ultraviolet light between 200 and 400 nm. At the same time, it also emits visible fluorescence and the intensity of the fluorescence is greatly increased. Therefore, the USDU@PAN film has wide application prospects in areas such as photoelectric sensors and UV-protection devices. More importantly, we transform natural organisms into materials with excellent optical properties. Therefore, it can be used in the field of UV-protection.
研究领域:
材料科学
·
生物学
✓ 已验证
DOI
高影响因子
IEEE Robotics and Automation Letters
·
2024
·Vol. 9
·期 12
·11802-11809
·
IF 4.6
Ruomao Liu,Yujun Chen,Yin Zhen,Jiachen Zhang
Capsule medicine is one of the most widely used methods of drug delivery into the human digestive tract. Packaging drugs into capsules not only prevents contamination of the drug before reaching the destination, but also protects the digestive organs and respiratory tract from potential damages caused by drug reactions. After reaching the targeted digestive organs, the drugs in the orally taken capsules usually can only be released passively. Most capsule robots that have been proposed to release drugs actively did not consider the compressed pressure when they pass through the esophagus, which could lead to premature drug release. This letter proposes a magnetic capsule robot that can withstand intra-esophageal pressure and also has the advantages of active locomotion and on-demand drug releasing. The proposed robot consists of two permanent magnets, an exoskeleton, and a soft non-magnetic container. Thus, it can withstand intra-esophageal pressure when it passes through the esophagus. This capsule robot can enter the stomach for targeted drug releasing without leaking liquid drugs along the path. The behavior of the robot is controllable using an external magnetic field thanks to the ring-shaped magnets mounted on the robot's top and bottom sections. The non-magnetic drug container will not be influenced by the external magnetic field during the locomotion to prevent leakage. The experiments show that this proposed capsule robot is more relevant to real-world medical applications thanks to its unique capability to withstand esophageal pressure.
研究领域:
医学工程
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消化系统医学
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机器人学
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2023
·
IF 19
Ping Fang,Ming-lu Zhu,Zhang-bing Zeng,Wen-xiao Lu,Feng-Xia Wang,Lu Zhang,Tao Chen,Li-ning Sun
Rapid advances in robotics have placed urgent demands on more intelligent human-machine interaction technologies. Specifically, the way of establishing dual-way intuitive communication with a consistent sensory system can greatly enhance efficiency and reliability. Here, a bi-directional human-machine interface (HMI) is designed by applying starch-based hydrogel sensors. The whole system consists of a multi-modal wearable sensory exoskeleton with a haptic feedback module and sensory robotic hand. The sensory exoskeleton with strain-sensing glove and rotation-sensing arm can capture and project the motion of the entire upper limb. The system offers object recognition functions by utilizing a sensing array on the robotic hands and machine learning algorithms, which can identify the shape and hardness information. The recognized results can be delivered back to the operator via vision and vibrational haptic feedback, respectively. This dual-way intelligent sensory system shows potential application in many key fields such as the Internet of Things, teleoperation, and medical robotics.
研究领域:
机器人技术
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人工智能
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2024
·
IF 11.2
Jingwen Wang,Shun Liu,Zhaoyang Chen,Taoyu Shen,Yalong Wang,Rui Yin,Hu Liu,Chuntai Liu,Changyu Shen
With the rapid development of wearable electronic skin technology, flexible strain sensors have shown great application prospects in the fields of human motion and physiological signal detection, medical diagnostics, and human-computer interaction owing to their outstanding sensing performance. This paper reports a strain sensor with synergistic conductive network, consisting of stable carbon nanotube dispersion (CNT) layer and brittle MXene layer by dip-coating and electrostatic self-assembly method, and breathable three-dimensional (3D) flexible substrate of thermoplastic polyurethane (TPU) fibrous membrane prepared through electrospinning technology. The MXene/CNT@PDA-TPU (MC@p-TPU) flexible strain sensor had excellent air permeability, wide operating range (0–450%), high sensitivity (Gauge Factor, GF max = 8089.7), ultra-low detection limit (0.05%), rapid response and recovery times (40 ms/60 ms), and excellent cycle stability and durability (10000 cycles). Given its superior strain sensing capabilities, this sensor can be applied in physiological signals detection, human motion pattern recognition, and driving exoskeleton robots. In addition, MC@p-TPU fibrous membrane also exhibited excellent photothermal conversion performance and can be used as a wearable photo-heater, which has far-reaching application potential in the photothermal therapy of human joint diseases.
研究领域:
可穿戴电子
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柔性传感器
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人体运动监测
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人机交互
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光热治疗
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）