ACS Nano
·
2025
·
IF 16
Changxing Wang,Yayun Ning,Yifan Yue,Xiaoxiang Wen,Yuechi Xie,Guoli Du,Jianing Li,Jianing Li,Sen Yang,Xuegang Lu
Combination of multioptical morphology, such as transmission, scattering, fluorescence (FL), and room-temperature phosphorescence (RTP), to build multisignal-integrated devices is highly attractive in future optical devices but extremely difficult owing to the poorly matched material design and construction principles. Here, we report a novel multioptical morphology elastomer (MOME) fabricated by encapsulating monodisperse RTP SiO2 nanoparticles (RTP-SiO2 NPs) with polydimethylsiloxane (PDMS). The switching behavior of optical signals is dependent on the deformation of MOME, such as stretching, bending, and squeezing. The MOME changes from a transparent state to a white scattered state under white light as the deformation increases, while the FL and RTP are significantly enhanced from the original weak state. During deformation, the air voids generated by the separation of RTP-SiO2 NPs and PDMS at the interface result in a refractive index mismatch, leading to a significant enhancement of light scattering and further causing deformation-induced self-scattering enhancement behavior in FL and RTP. Moreover, MOME also has intriguing modulation phenomena, such as dynamic deformation-regulated RTP during the decay process and solvent-deformation synergistically regulated optical switching behavior. On account of the outstanding optical properties, MOME is applied in daily visual monitoring of underwater pipelines, including displacement deviation, leakage, swelling, and localized anomalous protrusions. These findings provide important breakthroughs for the design of multioptical morphology integrated devices, demonstrating great potential for applications.
研究领域:
材料科学
·
光学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Small
·
2024
·
IF 13
Lin Mei,Wenchong Ouyang,Limin Xu,Yuanlong Huang,Qi Liu,Yu Bai,Quanming Lu,Tianzhi Luo,Zhengwei Wu
Hydrogels present significant potential in flexible materials designed for electromagnetic interference (EMI) shielding, attributed to their soft, stretchable mechanical properties and water-rich porous structures. Unfortunately, EMI shielding hydrogels commonly suffer from low mechanical properties, deficient fracture energy, and low strength, which limit the serviceability of these materials in complex mechanical environments. In this study, the double network strategy is successfully utilized along with the Hofmeister effect to create MXene/PAA (polyacrylic acid)-CS (chitosan) hydrogels and further strengthen and toughen the gel with (NH 4 ) 2 SO 4 solution. The gel exhibits enhanced functionalities such as outstanding stretchability, excellent strain sensitivity (11.66), and super fracture energy (≥9 kJ m −2 ). Notably, it demonstrates outstanding shielding effectiveness of 73.8 dB in the terahertz (THz) range, and the shielding properties can be effectively tuned by varying the MXene content, the (NH 4 ) 2 SO 4 concentration, and the thickness of the hydrogel. Additionally, the gel shows robust and superior shielding effectiveness after repeated stretching and long-term dehydration. The MXene/PAA-CS double-network (DN) hydrogels would be an excellent candidate for EMI shielding materials in advanced flexible electronic equipment and soft robots.
研究领域:
材料科学
·
柔性电子
·
电磁学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Small
·
2025
·
IF 12.1
Qian Sun,Tiecheng Qiu,Xiaojing Liu,Qiang Wei
The geometric properties of extracellular matrix (ECM) fibers play a crucial role in regulating cellular behaviors and functions. Although extensive research has examined the effects of fiber alignment, conflicting results have often arisen, leaving the precise mechanisms by which electrospun fiber alignment affects cellular behavior still unclear. This study investigates how the arrangement of polycaprolactone (PCL) electrospun fiber substrates affects cellular mechanosensing by modulating cell positioning. Larger cells, whose width on a coverslip exceeds 5 times the width of the aligned fiber gaps (≈8 µm in this study) and that span multiple aligned fibers, demonstrate enhanced spreading and mechanotransduction. Conversely, smaller cells, whose width is less than or equal to 2.5 times the width of the aligned fiber gaps and are confined within fiber interstices, exhibit limited mechanotransductive signaling. These findings are further supported by manipulating cell size and, more importantly, have led to the fabrication of semi-aligned fiber networks that enhance both cell spreading and mechanotransduction. This research emphasizes the importance of optimizing fiber architecture to improve cellular interactions, offering valuable insights for the design of biomimetic scaffolds in tissue regeneration.
研究领域:
生物材料学
·
细胞生物学
·
组织工程学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Ya-Feng Liu,Qun Liu,Jun-Fei Long,Feng-Lian Yi,Yuan-Qing Li,Xiao-Hua Lei,Pei Huang,Bing Du,Ning Hu,Shao-Yun Fu
Inspired by chameleons’ structural color regulation capability, a simple, but effective, swelling method is proposed for the first time to prepare an ionic polyacrylamide (PAAm) organogel for simultaneous tactile sensing and interactive color changing. The PAAm organogel obtained by swelling the PAAm scaffold in the dimethyl sulfoxide solution of organic electrochromic material (OECM) shows an extremely large stretchability with an elongation of 1600%, a supersoftness with a compressive modulus of 7.2 kPa, an excellent transmittance up to 90%, and a very fast response time of 0.5 s combined with the characteristic of interactive color changing. The PAAm organogel also suggests a universal design ability to tailor coloration spectra for tactile sensors via simply changing the type and content of OECM. The tactile sensor based on a PAAm organogel is capable of serving as a wearable device for precisely tracing human body motion performance and directly visualizing the stress distribution via interactive color changing capability. It is demonstrated that the swelling method proposed here is a simple and practical strategy to prepare ionic organogels with both piezo-resistive and electrochromic effects.
研究领域:
材料科学
·
生物仿生学
·
传感器技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
POLYMER
·
2021
·
IF 4.43
Xing Zhou,Renfang Song,Dong Wang,Changqing Fang,Qiang Wang,Jingrui Deng
Integrating polymer with biological matters to form hybrids or conjugates is innovative in organic/organic system with significantly promise for sensor, medical, and materials science. In this work, a uniform 2D nanofilm with the hybridization of lysozyme and polypyrrole was prepared at the air/water interface. Lysozyme was employed as the biological adhesion template, and the polypyrrole conductive layer assembled onto lysozyme film, forming a hybrid and functional film with both conductivity and bio-adhesion. The functionality and potential applications of the hybrid film were investigated by detecting the conductivity, patterning and antibacterial property. The hybrid film presents refined patterning through UV lithography , and significant antibacterial property by dissolving the outer wall of bacteria. Owing to the significant conductivity, the mechanical sensor can detect the tiny airflow changes effectively, such as tiny vibrations from human throat and basic locomotion. It supplies a path to prepare functionally flexible nanofilm in organic/organic system.
研究领域:
材料科学
·
生物医学工程
·
传感器技术
✓ 已验证
产品关联
DOI
高影响因子
Nano-Micro Letters
·
2022
·Vol. 14
·期 1
·1-13
·
IF 23.655
Wang Qiling,Xiao Peng,Zhou Wei,Liang Yun,Yin Guangqiang,Yang Qiu,Kuo Shiao-Wei,Chen Tao
The lateral-line-like underwater mechanical sensor (LUMS) realizes the imitation of the structure and function of the lateral line.
The detection range of water depth can be controlled by adjusting the size of the graphene/Ecoflex Janus film on LUMS. The maximum measured depth is 1.8 m.
Similar to the fish, the mechanical stimuli from land and water can be sensitively captured by LUMS in real time.
研究领域:
材料科学
·
生物仿生学
·
传感技术
✓ 已验证
DOI
高影响因子
ACS Nano
·
2022
·
IF 18.027
Junling Lu,Sanming Hu,Wenru Li,Xuefang Wang,Xiwei Mo,Xuetian Gong,Huan Liu,Wei Luo,Wen Dong,Chaotan Sima,Yaojin Wang,Guang Yang,Jing-Ting Luo,Shenglin Jiang,Zhijun Shi,Guangzu Zhang
Currently, various electronic devices make our life more and more safe, healthy, and comfortable, but at the same time, they produce a large amount of nondegradable and nonrecyclable electronic waste that threatens our environment. In this work, we explore an environmentally friendly and flexible mechanical sensor that is biodegradable and recyclable. The sensor consists of a bacterial cellulose (BC) hydrogel as the matrix and imidazolium perchlorate (ImClO4) molecular ferroelectric as the functional element, the hybrid of which possesses a high sensitivity of 4 mV kPa–1 and a wide operational range from 0.2 to 31.25 kPa, outperforming those of most devices based on conventional functional biomaterials. Moreover, the BC hydrogel can be fully degraded into glucose and oligosaccharides, while ImClO4 can be recyclable and reused for the same devices, leaving no environmentally hazardous electronic waste.
研究领域:
材料科学
·
环境科学
·
生物工程
✓ 已验证
DOI
高影响因子
Advanced Sustainable Systems
·
2023
·Vol. 7
·期 8
·2300097
·
IF 7.1
Ke Hu,Jiayi Zhang,Zhuyue Lan,Qingyu Meng,Shitao Shi,Yunfei Zhang,Yu Lei,Qingfeng Sun,Xiaoping Shen
Smart electromagnetic (EM) functional materials that can arbitrarily utilize EM energy and reduce EM pollution are attractive for future EM devices in an information society; however, studies on precise EM interference (EMI) shielding and sensing are rare. In this work, dual-action electrical and EM-responsive mechanoreceptors are prepared from electrically conductive polypyrrole (PPy) nanoparticle (NP)-infiltrated anisotropic wood (PW) aerogels. The prepared PW aerogels are composed of curved stacked layers of aligned cellulose nanofibers, and can be reversibly condensed and reconstructed for conductive network control during cyclic compression. These PW aerogels can withstand up to 74% compressive strain in a tangential direction and exhibit pressing-enhanced electrical conductivity and polarization loss. The piezoresistive gauge factor (GF) and linearity of the PW aerogels can be adjusted by varying the PPy deposition time, leading to varying GF values in the range of 1.87–4.62. During mechanosensing based on EMI shielding effectiveness (SE), rapid off/on switching between the EM wave transmission and shielding is achieved when the SE varies above and below the effective EMI shielding area (>20 dB) through continuous compression. Such dual-action electrical/EM off/on wood aerogel switches provide opportunities for the development of advanced smart devices from biomass resources.
研究领域:
材料科学
·
电子信息
·
智能设备
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED MATERIALS
·
2023
·Vol. 36
·期 7
·2310555
·
IF 29.4
Wenjie Wang,Yingfei Wang,Li Xiang,Long Chen,Lilei Yu,Anlian Pan,Jie Tan,Quan Yuan
Pain sensation is a crucial aspect of perception in the body. Force-activated nociceptors encode electrochemical signals and yield multilevel information of pain, thus enabling smart feedback. Inspired by the natural template, multi-dimensional mechano-sensing materials provide promising approaches for biomimetic nociceptors in intelligent terminals. However, the reliance on non-centrosymmetric crystals has narrowed the range of these materials. Here centrosymmetric crystal Cr 3+ -doped zinc gallogermanate (ZGGO:Cr) with multi-dimensional mechano-sensing is reported, eliminating the limitation of crystal structure. Under forces, ZGGO:Cr generates electrical signals imitating those of neuronal systems, and produces luminescence for spatial mapping of mechanical stimuli, suggesting a path toward bionic pain perception. On that basis, a wireless biomimetic nociceptor system is developed and a smart pain reflex in a robotic hand and robot-assisted biopsy surgery of rat and dog is achieved.
研究领域:
生物医学工程
·
材料科学
·
神经科学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Chuanjiang Zhou,Xiao Song,Ran Wei,Shengjie Liu,Zhaoqiang Wu,Hong Chen
Conductive ionogels based on deep eutectic solvents (DESs) have great application potential in the field of flexible sensors. However, the development of conductive ionogels that are stable under various environmental conditions (such as high and low temperatures, air, and water) remains extremely challenging. In this work, the hydrophobic conductive ionogel B x H y IG was prepared via a one-step photoinitiated copolymerization of butyl acrylate and N-hydroxyethylacrylamide in a hydrophobic DES. The good chemical compatibility between the polymer and DES, as well as the dense and reversible ion–dipole interactions, dipole–dipole interactions and hydrogen bond interactions, endow B x H y IG with satisfactory transparency (80 %), adhesion (polystyrene: 74.56 kPa), mechanical properties (elongation at break: 578 %, tensile strength: 171.25 kPa), a low degree of hysteresis (DH=1.9 %) and conductivity (3.95 × 10 -3 S m −1 ). Strain/pressure sensors and bioelectrodes prepared from ionogels have the characteristics of high sensitivity, fast response and excellent stability and can be used for real-time monitoring of human activities and health status in the atmosphere. In addition, the inherent hydrophobicity of B x H y IG (water contact angle > 110°) can effectively prevent B x H y IG from being eroded and swollen by water, thereby achieving reliable underwater sensing. More importantly, by directly exposing B x H y IG to air or storing it in nitrogen, the surface adhesion of conductive ionogels can be effectively regulated to obtain double-sided, single-sided or even nonadhesive ionogels. Therefore, this study provides new ideas for the development of conductive ionogels that can be applied under various environmental conditions.
研究领域:
材料科学
·
传感器技术
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
Nanoscale
·
2017
·Vol. 9
·期 46
·18258-18267
·
IF 7.367
Shangquan Wu,Zhiguo Zhang,Xiarong Zhou,Hong Liu,Changguo Xue,Gang Zhao,Yunxia Cao,Qingchuan Zhang,Xiaoping Wu
Infertility, whether of male or female origin, is a critical challenge facing the low birth rate and aging population throughout the world, and semen analysis is a cornerstone of the diagnostic evaluation of the male contribution to infertility. This means that tools which can characterize sperm properties in an effective manner are very much needed. The conventional approaches are essentially image-based, which have a limited value for analyzing sperm properties. Here, we show that an assay using nanomechanical sensors can detect sperm motility based on nanomotion. We use microcantilever sensors to directly characterize the mechanical response of the sperm based on the fluctuations of microcantilevers. We applied this methodology to sperms exposed to different chemical or physical agents. Real-time nanomechanical fluctuations showed that living sperms produced smaller fluctuations after treatment with inhibitory chemicals, and larger fluctuations after treatment with stimulatory chemicals. Our preliminary experiments suggest that the frequency of fluctuation is associated with sperm motility. This technique offers a brand-new perspective in the characterization of the sperm. By combining conventional measurements, reproductive medicine doctors and researchers should now be able to achieve unprecedented depth in the sperm properties.
研究领域:
生物医学工程
·
生殖健康
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CARBOHYDRATE POLYMERS
·
2021
·
IF 9.381
Zhiqi Wang,Fangchao Cheng,Hangchuan Cai,Xiurong Li,Jianping Sun,Yiqiang Wu,Nannan Wang,Yanqiu Zhu
A new type of nanocellulose/poly(vinyl alcohol)/carbon dot (NPC) multifunctional hydrogel was successfully fabricated by an one-step in-situ hydrothermal method . The one-pot strategy led to the formation of a complex hydrogen bonding/dynamic boric acid ester/nitrogen-doped carbon dots network, and endowed the hydrogel with multifunctionality. The hydrogel underwent self-healing at room temperature (25 °C) and exhibited double-emission fluorescence and high mechanical strength (tensile strength of up to 2.98 MPa). An NPC hydrogel-based capacitive sensor exhibited remarkable linear capacitance responsiveness toward pressure, strain, and glucose concentration, and enabled real-time synchronous quantitative pressure/glucose sensing with multiple linear correlations, which was a key performance criteria for biomechanical sensors. The versatility and multiple advantages of the as-prepared hydrogel demonstrate the potential of biological–mechanical sensing materials using natural cellulosic biomass.
研究领域:
材料科学
·
生物医学工程
·
化学工程
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）