ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Duan Chen,Hao Tan,Tianyi Xu,Wei Wang,Hezhang Chen,Jie Zhang
Micro–nanofabrication of conductive polymers (CPs) with functional structures is in great demand in organic electronic devices, micro-optics, and flex sensors. Here, we report the fabrication of micropatterned poly(3,4-ethylenedioxythiophene) (PEDOT) and its applications on flexible electrochromic devices and tunable diffractive optics. The localized electropolymerization of 3,4-ethylenedioxythiophene at the electrode/agarose gel stamping interface through an electrochemical wet stamping (E-WETS) technique is used to fabricate PEDOT with functional microstructures. PEDOT microdots, micro-rectangles, and interdigitated array microelectrodes are fabricated with submicron tolerance and ∼2 μm smallest feature size. Furthermore, the flexible PEDOT electrochromic devices consisting of the logo of Xiamen University are fabricated with a reversible switch of absorptivity. The improved optical and coloration–amperometric responses of electrochromism are demonstrated because of the enhanced charge transport rate of the micropatterned PEDOT. The electrochromism of the 2D PEDOT micropatterns is further used as a binary diffractive optical element to modulate the intensity and efficiency of diffracted 2D structural light because of the switchable absorptivity during doping and dedoping processes. When the potential is switched from 1 to −1 V to tune the absorptivity at ∼600 nm from low to high, the intensity of zero-order diffraction light spot decreases with the intensity of other order diffraction light spots increasing dramatically. The results demonstrate that E-WETS provides an alternative method for the fabrication of CPs with functional micro–nanostructures. The electrochemical tunable diffraction with high reversibility and fast response is of potential applications in micro-optics and flex sensors.
研究领域:
有机电子学
·
微光学
·
传感器技术
✓ 已验证
DOI
高影响因子
Surfaces and Interfaces
·
2024
·
IF 5.7
Lei Chen,Yuan Niu,Cuihong Liu,Runhong Fan,Peng Liu,Dongxu Ma,Xiaoqing Zhang,Chengzhi Liu,Huigao Duan
Transfer printing enables the fabrication of flexible electronics by transferring devices from donor to receiver substrates. However, using an elastic stamp can cause strain and damage during transfer. A rigid stamp can solve this issue, but rigid materials are unsuitable for flexible electronics. In this study, we present a transfer approach using a UV-curable polyurethane acrylate film as a stamp with solvent-induced mechanical properties, from rigidity to elasticity. During the transfer, the UV-curable film is tuned to be rigid to prevent damage to the transferred materials caused by strain during peeling. The approach enables the intact transfer of metallic structures, including various multi-scale Ag patterns with the highest resolution of 10 μm, high transfer yield, and scalability. The interfacial mechanisms of metal transfer were analyzed. The results demonstrate that surface modification through increasing contact angles, improve the stability of metal transfer. When soaked in ethanol, the film becomes soft and elastic, making it an ideal flexible substrate for fabricating electronics, especially for applications in sensing, healthcare, and artificial skin.
研究领域:
材料科学
·
柔性电子学
·
微纳制造
✓ 已验证
产品关联
DOI
高影响因子
NANOTECHNOLOGY
·
2015
·Vol. 26
·期 18
·185301
·
IF 3.821
Shujie Wang,Qing Shi,Jing Chai,Ke Cheng,Zuliang Du
Basic research on nanoelectronics is often limited by the high cost and large-scale methods to fabricate electrodes with controlled gap size in nanometer scales. Here nanoelectrodes with a controlled gap size of sub-100 nm were fabricated by modified nanoimprint lithography (NIL) via a double-layer lift-off process utilizing polymethylmethacrylate (PMMA) and polydimethylglutarimide (PMGI) as the lift-off resist. Firstly the patterns of the electrode mold were transferred onto the upper PMMA layer by NIL techniques and then through controlling the developing time and concentration of developer of the PMGI under layer, regulating the exact gap size of the transferred metal nanoelectrode. The result indicated that the 'undercut' phenomenon was observed of the PMGI transfer layer during the developing process; through controlling the feature size of the undercut length, the gap size of the transferred metal nanoelectrode was precisely controlled, which showed shrinkage behavior. The nanoelectrodes with gap sizes of 800, 400, 200, and 100 nm can be reduced to about 440, 120, 80, and 70 nm. Our result provides a low-cost and large-scale route to prepare nanoelectrodes with controlled gap size, which can be valuable for current efforts in nanoelectronics.
研究领域:
纳米电子学
·
材料科学
·
微纳制造
✓ 已验证
DOI
高影响因子
OPTICS AND LASER TECHNOLOGY
·
2025
·
IF 5
Peilin Cao,Jiahua He,Cong Wang,Kaiwen Ding,Yulong Ding,Dejin Yan,Nai Lin,Ji’an Duan
The reliability of the sapphire-metal joint technology in electronic devices determines its performance for industrial applications. Hence, we propose a method to enhance the connection strength between sapphire and metal based on micro-nanostructures on the substrate surface fabricated by femtosecond laser technology. The micro-nano modification of the substrate surface effectively improves the wettability of the silver paste, contributing to the spreading of the solder. The influence of different substrate surface morphologies on the joint strength is also investigated. It is found that the Cu/ sapphire substrate with cone microstructure arrays has the highest joint strength, reaching 27.2 MPa at a sintering temperature of 300 °C, which is about 4 times increase compared to the flat substrate (7.3 MPa). Further, the effect of different sintering parameters on the joint strength of the cone-structured array substrate is studied. The morphology of the cross-section and shear damage surfaces for connecting structures is analyzed, revealing that the mechanism of interface strength enhancement is mechanical interlocking. This fabrication of micro-nanostructures on substrate surfaces by femtosecond lasers provides a simple and efficient approach for the high-performance joining of ceramics and metals.
研究领域:
材料科学
·
连接技术
·
表面工程
·
微纳制造
·
电子封装
✓ 已验证
产品关联
DOI
高影响因子
Nano-Micro Letters
·
2025
·Vol. 18
·期 1
·58
·
IF 36.3
Zheng Jianchen,Zhang Yuzhao,Yu Haibo,Wang Jingang,Guo Hongji,Qiu Ye,Wang Xiaoduo,Feng Yu,Liu Lianqing,Li Wen Jung
Proposed a dynamic grayscale gradient modulation system enabling multi-information analysis and encryption under multi-optical fields, establishing a new paradigm for multi-dimensional encryption of collaborative multispectral information.
Developed coumarin-based photo-responsive in situ reconstruction technology and constructed a multi-optical field coupled control system to achieve dynamic configuration of multi-information carriers.
Designed and fabricated a micro-dynamic multiple encryption device with integrated functions for information writing, erasing and rewriting, realizing stable information storage and dynamic destruction through micro/nano-optical keys.
研究领域:
光学工程
·
纳米光子学
·
信息科学
·
材料科学
·
密码学
·
微纳制造
·
功能材料
·
光化学
✓ 已验证
DOI
PubMed
高影响因子
Small
·
2025
·
IF 12.1
Jiaxin Zeng,Zhiyu Zheng,Sicheng Wu,Ruxin Xiao,Liqiong Liao
Hydrogel actuators have shown promising applications in biomedical devices, wearable electronics, and soft robotics. To fulfill practical applications, hydrogel actuators must achieve high-speed adaptive motion, programmable large-strain actuation and 3D morphing ability, however, the fabrication of such actuators remains a challenge. In this work, temperature responsive gradient hydrogel is prepared through the UV-absorbing effects of the precursors at specific wavelength of UV light during photopolymerization. Moreover, chito-oligosaccharides (COS) are introduced to enhance the hydrogel's gradient structure by migrating to the low-density side during photopolymerization and acting as porogen, resulting in a hydrogel with an ultrafast bending rate (190°/s) and large amplitude (760°). Furthermore, a light-responsive gradient hydrogel can be easily fabricated using the “naturally derived” genipin-crosslinked gelatin network as the photothermal transducer. By employing the photomask techniques to customize the local gradient structures, hydrogels with programmable 3D 1 -to-3D 2 deformation behavior are realized. Inspired by inchworms and springtails, the hydrogels are pre-programmed to harness its fast-response and large-amplitude deformation, enabling light-driven soft robots to achieve biomimetic actuation, including tumbling, jumping, and crawling. This programmable, fast-response, 3D shape-morphing gradient hydrogel actuator expands the possibilities for applications in complex dynamic systems, including soft robotics and bionic devices.
研究领域:
生物医学工程
·
软体机器人
·
仿生学
·
高分子材料
·
智能响应材料
·
组织工程
·
微纳制造
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Science Advances
·
2025
·Vol. 11
·期 37
·
IF 12.5
Jiawei Yuan,Zhikang Li,Yihe Zhao,Ruiyan Luo,Shaohui Qin,Jie Li,Min Li,Gengyu Han,Zixuan Li,Zilong Zhao,Jiazhu Li,Shiwang Zhang,Zheng Yuan,Xiangguang Han,Lihong Fan,Xiaozhang Wang,Tong Wang,Ping Yang,Libo Zhao,Lirong Yuan,Yi Lv,Rongqian Wu,Tzung K. Hsiai,Zhuangde Jiang
Continuous monitoring of cardiovascular vital signs can reduce the incidence and mortality of cardiovascular diseases, yet cannot be implemented by current technologies because of device bulkiness and rigidity. Here, we report self-adhesive and skin-conformal ultrasonic transducer arrays that enable wearable monitoring of multiple hemodynamic parameters without interfering with daily activities. A skin-adaptive focused ultrasound method with rational array design is proposed to implement measurement under wide ranges of skin curvatures and depths with improved sensing performances. We introduce a self-adhesive hydrogel layer to enhance the acoustic impedance matching, biocompatibility and contact reliability at device-skin interfaces, and a microelectromechanical systems-compatible process for batch-to-batch and high-consistency manufacturing. The resultant transducer array, with a frequency of 2.4 megacycles per second and a –6 dB bandwidth of 47%, implements accurate and continuous detection of cardiovascular signs, including blood pressure (BP) waveforms of various arteries, heart rate and BP during exercises, and arterial stiffness, validated clinically.
研究领域:
生物医学工程
·
心血管病学
·
传感器技术
·
转化医学
·
微纳制造
·
生物电子学
·
生理信号监测
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Yingjie Niu,Ziqi Wang,Zhenxiang Xiong,Yuanyuan Tan,Zhijian Meng,Dejin Yan,Hui Cheng,Chenglin Yi,Kaifu Zhang
Temperature sensors play a vital role in fields such as food safety, medical diagnostics, and aerospace. However, the development of conformal temperature sensors with high sensitivity, low cost, broad detection range, and reliable performance under extreme conditions remains a significant challenge due to limitations in materials and fabrication technologies. In this study, we synthesized titanium carbide/silver (MXene/Ag) nanocomposites through electrostatic adsorption and in-situ self-reduction, and formulated a hybrid ink suitable for aerosol jet printing (AJP). The MXene/Ag-Ag-0.28 % ink, prepared with the optimal MXene/Ag and Ag mass ratio, demonstrated outstanding printability with a resolution of up to 10 μm, along with excellent electrical conductivity and mechanical durability. The printed traces achieved a conductivity as high as 2.32 × 10 7 S/m, representing a 56 % improvement over traces printed with Ag ink. Furthermore, the resistance of the printed traces changed by only 2.8 % after 1000 bending cycles, which is 3.22 times more stable than Ag traces. In addition, the printed sensors exhibited a wide temperature detection range from −50 °C to 270 °C, with a response delay as short as 90 ms and a temperature coefficient of resistance (TCR) as high as 3.03 × 10 −3 /°C at 30 °C, which is 24 % higher than that of pure Ag ink. The sensor also demonstrated reliable responsiveness under extreme conditions such as open flame and exposure to liquid nitrogen. Moreover, high-quality conformal temperature sensors were successfully fabricated on a variety of complex curved surfaces, highlighting the advanced manufacturing capabilities of AJP. Notably, conformal sensors were also integrated onto the surface of a turning tool for real-time temperature monitoring during the machining of carbon fiber reinforced polymer (CFRP). These results offer valuable insights into the potential of AJP technology for fabricating high-performance, conformal electronic sensors.
研究领域:
材料科学
·
生物医学工程
·
微纳制造
·
传感技术
·
转化医学
·
柔性电子学
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Ye Tian,Xiaojun Lu,Tingbin Wang,Aiping Liu,Lisha Fan,Huaping Wu
Soft microactuators leveraging biomimetic designs and microfabrication advances show substantial promise for soft robotics, precision sensing, and targeted drug delivery. However, simultaneously achieving rapid deformability with mechanical robustness in such systems remains a significant challenge. Herein, a hybrid microactuator with heterogeneous materials is fabricated via femtosecond laser two-photon polymerization. Incorporating acrylic acid as a functional monomer imparts pH-responsive behavior to the hydrogel, whereas the rigid photoresist ensures structural integrity. Moreover, embedded magnetic nanoparticles enable contactless and precise locomotion under an external magnetic field. As a proof-of-concept, a scorpion-inspired microactuator with dual pH/magnetic responsiveness demonstrates programmable functions including capture, transport, and release. This strategy provides a versatile platform for adaptive microrobots with localized responsiveness and remote motion, paving the way for precision therapeutics and cellular micromanipulation.
研究领域:
生物医学工程
·
微纳制造
·
智能材料
·
软体机器人
·
靶向给药
✓ 已验证
产品关联
DOI
高影响因子
Advanced Science
·
2024
·Vol. 11
·期 10
·2309052
·
IF 14.3
Yue Hou,Zhaoyu Li,Ziyu Wang,Xingzhong Zhang,Yang Li,Chang Li,Haizhong Guo,Hongyu Yu
Thermoelectric devices (TEDs) show great potential for waste heat energy recycling and sensing. However, existing TEDs cannot be self-adapted to the complex quadratic surface, leading to significant heat loss and restricting their working scenario. Here, surface-conformable origami-TEDs (o-TEGs) are developed through programmable crease-designed origami substrates and the screen-printing TE legs. Compared with “π” structured TEDs, the origami design (with heat conductive materials) changed the heat-transferring direction of the laminated TE legs, resulting in an enhancement in enlarging Δ T / T Hot and V out by 5.02 and 3.51 times. Four o-TEDs with different creases designs are fabricated to verify the heat recycling ability on plane and central quadratic surfaces. Demonstrating a high V out density (up to 0.98 −2 at Δ T of 50 K) and good surface conformability, o-TEDs are further used in thermal touch panels attached to multiple surfaces, allowing information to be wirelessly transferred on a remote display via finger-writing.
研究领域:
材料科学
·
能源工程
·
微纳制造
·
柔性电子
·
热力学
✓ 已验证
DOI
高影响因子
RSC Advances
·
2016
·Vol. 6
·期 14
·11204-11210
·
IF 3.289
Yawei Sun,Yaopeng Zhang,Jingjing Liu,Fuqiang Nie
In this work, hydrogel photonic crystal beads with inverse opal structure are generated on a well-controlled microfluidic chip device. An online droplet drying method and templating technique are integrated into the producing process. This process results in the silica nanoparticles in the droplets self-assembled into spherical photonic crystals with narrow stop bands and identical structural colours, which is the ideal template for fabricating inverse opal hydrogel beads. The effects of acrylic acid (AA) concentration, water dosage and buffer pH on the equilibrium swelling of inverse opal hydrogel are discussed. In the concentration of AA (3%) and water (31%), the inverse opal hydrogel beads show wide sensing range and rapid response (less than 30 s) to pH variation. Overall, the inverse opal hydrogels as pH sensors show homogeneous structural colour changes due to the spherical 3D structure. The present characterization of quite mechanically robust and good reproducibility for the spherical pH sensor may have promise application in advanced optical devices.
研究领域:
生物医学工程
·
材料科学
·
分析化学
·
微纳制造
·
传感技术
✓ 已验证
DOI
高影响因子
Smart Materials and Structures
·
2024
·Vol. 33
·期 4
·045021
·
IF 3.7
Chunhui Wang,Chaojie Xin,Qihang Song,Shuobang Wang,Siyi Cheng,Chao Shi,Dongyuan Zhao,Qingyuan He,Jie Zhang,Xiaoming Chen
Wearable sensors integrating multiple functions have great potential in artificial intelligence and flexible electronics at this stage and can perceive various external stimuli with high sensitivity and accuracy, such as strain, stress, and temperature. However, because multiple parameters do affect each other and reduce the sensing performance, making a single device that can detect multiple functions simultaneously is a huge challenge. In this paper, a strain-temperature dual-parameter sensor is developed with a planar structure design and used poly(3,4-ethylenedioxythiophene): poly(styrenesulfonic acid) and multi-walled carbon nanotubes polymerization materials to prepare a micron-sized film. The influence of two-dimensional structures on sensing performance is explored through simulation, and a structure with large deformation is selected to improve the strain detection range. The sensor can detect static and dynamic strain signals, and can maintain good linearity and response speed below 100 ms within a large strain range of 20%. In addition, the sensor also exhibits good temperature detection capability, with a temperature sensitivity of 18.2 μV K−1 and the ability to detect static and dynamic temperature changes with long-term stability. Finally, the sensor is tested in some actual scenarios, reflecting that the sensor manufactured has the dual-detection ability, showing sensitive strain monitoring and temperature perception decoupled between the dual signals. The sensor is realized with circuit board acquisition and wireless communication, combining multi-channel applications. Our research provides a feasible method for constructing multi-parameter human-computer interaction sensors.
研究领域:
生物医学工程
·
柔性电子学
·
传感技术
·
人机交互
·
转化医学
·
智能材料
·
微纳制造
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）