Advanced Materials & Technologies最新文献_第3页

Flexible Copper Metal Circuits via Desktop Laser Printed Masks 基于桌面激光打印掩模的柔性铜金属电路

Advanced Materials & Technologies Pub Date : 2022-07-25 DOI: 10.1002/admt.202200400

R. Ghosh, Xiaoya Liu, M. Z. Yates

{"title":"Flexible Copper Metal Circuits via Desktop Laser Printed Masks","authors":"R. Ghosh, Xiaoya Liu, M. Z. Yates","doi":"10.1002/admt.202200400","DOIUrl":"https://doi.org/10.1002/admt.202200400","url":null,"abstract":"A novel process is demonstrated that produces patterns of electrically conductive copper on a flexible polyimide film substrate using standard desktop laser printed toner and near room temperature aqueous chemistry. The laser toner acts as a mask to selectively block the ion exchange self‐metallization (IESM) reduction reaction that forms nanoscale silver or palladium coatings at the polyimide surface. The silver or palladium IESM coating is then used as a catalyst for electroless deposition of copper. Under appropriate conditions, the copper is deposited selectively on top of the catalyst layer. The resulting copper layer has a measured sheet resistance as low as 0.3 Ohms/sq. Electrical isolation is measured between copper traces spaced as close as 300 microns, and high conductivity is measured along traces with widths as low as 200 microns. The minimum pattern size appears to be limited primarily by the resolution of the laser toner pattern, as the IESM metal layer is observed to follow the contours of individual toner particles. The process avoids the use of high temperature, vacuum, and organic solvents and is thus suitable for very low cost prototyping or distributed manufacturing of simple electronic devices.","PeriodicalId":7200,"journal":{"name":"Advanced Materials & Technologies","volume":"56 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83478017","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ultra‐Sensitive and Quick‐Responsive Hybrid‐Supercapacitive Iontronic Pressure Sensor for Intuitive Electronics and Artificial Tactile Applications 用于直观电子和人工触觉应用的超灵敏和快速响应混合超级电容离子电子压力传感器

Advanced Materials & Technologies Pub Date : 2022-07-25 DOI: 10.1002/admt.202101743

H. Yoon, Seokgyu Ko, Ashok Chhetry, Chani Park, Sudeep Sharma, Sanghyuk Yoon, Dongkyun Kim, Shipeng Zhang, D. Kim, J. Park

{"title":"Ultra‐Sensitive and Quick‐Responsive Hybrid‐Supercapacitive Iontronic Pressure Sensor for Intuitive Electronics and Artificial Tactile Applications","authors":"H. Yoon, Seokgyu Ko, Ashok Chhetry, Chani Park, Sudeep Sharma, Sanghyuk Yoon, Dongkyun Kim, Shipeng Zhang, D. Kim, J. Park","doi":"10.1002/admt.202101743","DOIUrl":"https://doi.org/10.1002/admt.202101743","url":null,"abstract":"Recent advances in supercapacitive pressure sensors based on iontronic film have a significant capacitive response and a low detection limit due to their large capacitance change resulting from electrical double layer (EDL) and these pressure sensors are used to detect a wide range of pressure with high resolution for various applications such as prosthesis, wearable devices, and robotics. Thus, the enhancements to the EDL capacitive response are significantly important challenges for advanced applications with outstanding performances. Herein, an ultra‐sensitive and quick‐responsive hybrid‐supercapacitive iontronic pressure sensor using a novel sensing mechanism and facile fabrication technique is reported to overcome the limitations of the existing iontronic pressure sensors. As a sensing material, conductive polymer and carbon nanotube are incorporated into the iontronic film, as pseudo‐ and EDL‐capacitive material, respectively. Moreover, vinyl silica nanoparticle (VSNP) is used to decrease the recovery time by making the iontronic film quick‐response. The developed hybrid‐supercapacitive pressure sensor exhibited an ultra‐high sensitivity of 301.5 kPa−1 over a wide pressure range of up to 63.3 kPa along with a fast recovery time of ≈32 ms. It is believed that the proposed hybrid‐supercapacitive mechanism in iontronic film will significantly enhance the performance of conventional iontronic pressure sensors.","PeriodicalId":7200,"journal":{"name":"Advanced Materials & Technologies","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87478048","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Propulsion of Magnetic Beads Asymmetrically Covered with DNA Origami Appendages 磁珠不对称覆盖DNA折纸附属物的推进

Advanced Materials & Technologies Pub Date : 2022-07-24 DOI: 10.1002/admt.202200450

Christoph Pauer, Aron Venczel, Mihir Dass, T. Liedl, J. Tavacoli

{"title":"Propulsion of Magnetic Beads Asymmetrically Covered with DNA Origami Appendages","authors":"Christoph Pauer, Aron Venczel, Mihir Dass, T. Liedl, J. Tavacoli","doi":"10.1002/admt.202200450","DOIUrl":"https://doi.org/10.1002/admt.202200450","url":null,"abstract":"Eukaryotic cells that swim by the beating of nanoscale elastic filaments (flagella) present a promising locomotion paradigm for man‐made analogues essential for next‐generation in‐vivo treatments and for the study of collective phenomena at the low Reynolds number limit. However, artificial analogues have been limited to many microns in size due to the engineering challenges of fabricating actable flexible filaments at the nanoscale—thereby narrowing the application scope. Here, made‐to‐order nanoscale filaments designed on the molecular level are fabricated using the DNA‐origami technique. It is found that magnetic beads anisotropically covered with such bundles move in a ballistic fashion when wagged back and forth under an external magnetic field. Furthermore, by comparing bead dynamics at a range of bundle coverages and driving frequencies, compelling evidence is amassed to suggest that this ballistic motion is imparted by the beating of the DNA origami filaments as synthetic flagella. This proof‐of‐concept work opens up avenues for further made‐for‐purpose appendages designed using DNA self‐assembly and with it ever more complex locomotion on the nano and microscale.","PeriodicalId":7200,"journal":{"name":"Advanced Materials & Technologies","volume":"38 4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83017366","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

A Facile Strategy to Densify Aligned CNT Films with Significantly Enhanced Thermal Conductivity and Mechanical Strength 一个简单的策略，以致密排列碳纳米管薄膜显著提高热导率和机械强度

Advanced Materials & Technologies Pub Date : 2022-07-22 DOI: 10.1002/admt.202200623

Yongdong Wu, Qiangqiang Ma, Ting Liang, Yimin Yao, Junhong Li, Xiaoliang Zeng, Jian-bin Xu, Rong Sun

{"title":"A Facile Strategy to Densify Aligned CNT Films with Significantly Enhanced Thermal Conductivity and Mechanical Strength","authors":"Yongdong Wu, Qiangqiang Ma, Ting Liang, Yimin Yao, Junhong Li, Xiaoliang Zeng, Jian-bin Xu, Rong Sun","doi":"10.1002/admt.202200623","DOIUrl":"https://doi.org/10.1002/admt.202200623","url":null,"abstract":"Aligned carbon nanotube (CNT) films with outstanding thermal and mechanical properties are promising for thermal management in electronics and mechanical enhancement in composites. One main challenge toward aligned CNT films is the loose stacking and unsatisfactory orientation of individual CNTs within the macroscopic assemblies, resulting in unsatisfactory performance. In this study, a facile strategy to densify commercial aligned CNT films with nearly doubled stacking density increasing from 0.63 to 1.17 g·cm−3, where the densification process involves infiltration of ethanol, CNT protonation along with mechanical stretching, is proposed. The densification strategy makes CNTs compactly aligned at the macro level, and enables CNTs to undergo spatial reorganization at the microscopic level simultaneously, contributing to a 125.9% and 680% enhancement of in‐plane thermal conductivity (357.1 W·m−1·K−1) and tensile strength (281.7 MPa) in densified CNT films, respectively. The densified CNT films also exhibit synchronous temperature variations with the heat source and excellent reliability in harsh environments, showing great potential in thermal management applications. This study provides effective route for driving commercial CNT films in thermal management, and contributes new ideas for the performance regulation of other carbon‐based macroscopic assemblies.","PeriodicalId":7200,"journal":{"name":"Advanced Materials & Technologies","volume":"9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75671780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Novel 3D Printing Encapsulation Strategies for Perovskite Photodetectors 钙钛矿光电探测器新型3D打印封装策略

Advanced Materials & Technologies Pub Date : 2022-07-22 DOI: 10.1002/admt.202200521

F. Zhao, Xiao Luo, Chenjie Gu, Jiamin Chen, Ziyang Hu, Yingquan Peng

{"title":"Novel 3D Printing Encapsulation Strategies for Perovskite Photodetectors","authors":"F. Zhao, Xiao Luo, Chenjie Gu, Jiamin Chen, Ziyang Hu, Yingquan Peng","doi":"10.1002/admt.202200521","DOIUrl":"https://doi.org/10.1002/admt.202200521","url":null,"abstract":"This work presents two different encapsulation strategies for perovskite photodetectors by testing the device stability under elevated ambient humidity of 85% and room temperature (25 °C). The single layer structure is adopted in the devices in order to accelerate the aging tests. The best stability (retention of ≈90% of initial photoresponsivity on average after 24 h, and ≈73% after 168 h) is obtained for devices protected by a flexible UV‐curable resin shell and encapsulated with AB epoxy including a desiccant sheet. The effects of the epoxy outgassing, the presence of desiccant, and the bending ability of encapsulated devices are also investigated. Additionally, with the assistance of 3D printing technology, a new possibility of research in the aspect of electrical device encapsulation is developed. Rapid iterative modifications in materials, shape, inner structure, and easy integration with outer component like desiccant ball/sheet make 3D printing assistance an ideal solution for the design of the encapsulation configuration and its early verification. This work not only opens up an optimal way for perovskite encapsulation by the 3D printing technology, but also provides an ideal solution for the design of the encapsulation configuration and its early verification.","PeriodicalId":7200,"journal":{"name":"Advanced Materials & Technologies","volume":"61 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85425005","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Soft, All‐Polymer Optoelectronic Tactile Sensor for Stick‐Slip Detection 软性，全聚合物光电触觉传感器，用于粘滑检测

Advanced Materials & Technologies Pub Date : 2022-07-22 DOI: 10.1002/admt.202200406

M. Han, C. Harnett

引用次数: 2

Additive Manufacturing of Subject‐Conformal Receive Coils for Magnetic Resonance Imaging 磁共振成像主体共形接收线圈的增材制造

Advanced Materials & Technologies Pub Date : 2022-07-21 DOI: 10.1002/admt.202200647

H. Vanduffel, C. Parra-Cabrera, W. Gsell, R. Oliveira-Silva, L. Goossens, R. Peeters, U. Himmelreich, B. Van Hooreweder, Dimitrios Sakellariou, W. Vanduffel, R. Ameloot

{"title":"Additive Manufacturing of Subject‐Conformal Receive Coils for Magnetic Resonance Imaging","authors":"H. Vanduffel, C. Parra-Cabrera, W. Gsell, R. Oliveira-Silva, L. Goossens, R. Peeters, U. Himmelreich, B. Van Hooreweder, Dimitrios Sakellariou, W. Vanduffel, R. Ameloot","doi":"10.1002/admt.202200647","DOIUrl":"https://doi.org/10.1002/admt.202200647","url":null,"abstract":"High signal‐to‐noise ratio (SNR) is crucial to obtaining high‐quality magnetic resonance (MR) images. However, a poor fit of fixed‐size radiofrequency (RF) coils to the subject often limits the SNR both in research and clinical magnetic resonance imaging (MRI) practice. Therefore, there is an urgent need to fabricate RF coils that exhibit a close geometrical fit (or are subject conformal) to the to‐be‐imaged region. A range of 3D printing methods are proposed for producing such conformal coils and overcoming constraints in geometrical complexity, production time, and cost. Laser powder bed fusion and stereolithography‐based methods are explored. The fully digital workflow allows for the seamless integration of electromagnetic simulations of geometrically complex coils, resulting in rapid design iterations. SNR gains up to 68% are observed for single 3D‐printed subject‐conformal coils compared to a state‐of‐the‐art commercially available (nonconformal) coil array. In addition to tests on phantoms, a conformal 3D‐printed coil is used to image the metacarpophalangeal joint of the thumb from a volunteer on an MRI scanner to demonstrate the improved image quality.","PeriodicalId":7200,"journal":{"name":"Advanced Materials & Technologies","volume":"59 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73719849","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Dual‐Enhanced Effect of Ionic Liquid Incorporation on Improving Hybrid Harvesting Properties of Solar and Raindrop Energy 离子液体掺入对提高太阳能和雨滴能量混合收获性能的双重增强效应

Advanced Materials & Technologies Pub Date : 2022-07-21 DOI: 10.1002/admt.202200664

Jinsha Song, Jiliang Mu, Zhengyang Li, Chengpeng Feng, Wenping Geng, Xiaojuan Hou, Jian He, Xiu-jian Chou

{"title":"Dual‐Enhanced Effect of Ionic Liquid Incorporation on Improving Hybrid Harvesting Properties of Solar and Raindrop Energy","authors":"Jinsha Song, Jiliang Mu, Zhengyang Li, Chengpeng Feng, Wenping Geng, Xiaojuan Hou, Jian He, Xiu-jian Chou","doi":"10.1002/admt.202200664","DOIUrl":"https://doi.org/10.1002/admt.202200664","url":null,"abstract":"Ubiquitous environmental energy has become an important energy source for ensuring long‐lasting operation of unattended monitoring systems. However, several technical bottlenecks remain for achieving improved collection performance of environmental energy. Herein, a transparent composite film comprising micro‐pyramid arrays (mp‐arrays) and a conductive ionic liquid (IL) based on polydimethylsiloxane (PDMS) is innovatively generated as a difunctional layer that acts as an antireflective coating for solar cells and an enhanced triboelectric layer for the raindrop‐harvesting triboelectric nanogenerator (RH‐TENG). The regular mp‐arrays fabricated using the template transfer technology according to the matched refractive index between IL and PDMS effectively inhibit the surface reflection and improve the light trapping ability of solar cells. Owing to a significant increase in transmittance, the power conversion efficiency of the solar cell is enhanced by 10.92% owing to the IL@PDMS coating with mp‐arrays (mp‐IL@PDMS). Further, the conductive IL significantly improves the dielectricity of PDMS film. Due to the improved dielectric constant, increased aspect ratio, and excellent hydrophobicity, the output voltage and current of the RH‐TENG with mp‐IL@PDMS are enhanced by ≈24‐ and 44‐fold, respectively. Overall, this study, which is based on the incorporation of transparent conductive IL, provides a new technical path for efficient multiclimate energy harvesting.","PeriodicalId":7200,"journal":{"name":"Advanced Materials & Technologies","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75806479","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

A Self‐Powered, Single‐Mode Tactile Sensor Based on Sensory Adaptation Using Piezoelectric‐Driven Ion Migration 一种利用压电驱动离子迁移的自供电单模触觉传感器

Advanced Materials & Technologies Pub Date : 2022-07-21 DOI: 10.1002/admt.202200691

Ey-In Lee, Jin‐Woo Park

{"title":"A Self‐Powered, Single‐Mode Tactile Sensor Based on Sensory Adaptation Using Piezoelectric‐Driven Ion Migration","authors":"Ey-In Lee, Jin‐Woo Park","doi":"10.1002/admt.202200691","DOIUrl":"https://doi.org/10.1002/admt.202200691","url":null,"abstract":"A piezoelectric tactile sensor is beneficial for creating a self‐powered system with a compact design, which is essential in electronic‐skin technology. However, piezoelectricity is only capable of dynamic pressure detection because it responds to sudden environmental changes. Since it is common to add another sensing unit to detect static pressure that accompanies bulkiness, including a measuring apparatus, we demonstrate a self‐powered, single‐mode piezoelectric tactile sensor by fabricating a piezoelectric gel through the electrospinning technique. As piezoelectricity senses the dynamic pressure without an external power supply, ions detect the static pressure by maintaining the potential difference upon sustained pressure. Since each component outputs a voltage signal of the same type but different profiles upon pressure, it is possible to distinguish dynamic and static pressure in a single mode. Moreover, inspired by the sensory adaptation of mammalian skin, an ion‐assisted piezoelectric tactile sensor efficiently detects concurrently stacked stimuli by decreasing the output signal for sustained stimuli. The sensitivity for superimposed pressure upon initial 14.7 kPa increases by more than four times compared to that without sensory adaptation for both dynamic and static pressure.","PeriodicalId":7200,"journal":{"name":"Advanced Materials & Technologies","volume":"115 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81857245","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Spectral Regulation and Efficiency Optimization in Cr3+‐Doped Gadolinium Aluminum Gallium Garnet Near‐Infrared Ceramic Phosphors via Crystal‐Field Engineering 基于晶体场工程的Cr3+掺杂钆铝镓石榴石近红外陶瓷荧光粉的光谱调控和效率优化

Advanced Materials & Technologies Pub Date : 2022-07-21 DOI: 10.1002/admt.202200519

Hangjie Jiang, Liyan Chen, Xianhui Wu, Zhaohua Luo, Ruiyang Li, Yongfu Liu, Zehua Liu, Peng Sun, W. You, Jun Jiang

{"title":"Spectral Regulation and Efficiency Optimization in Cr3+‐Doped Gadolinium Aluminum Gallium Garnet Near‐Infrared Ceramic Phosphors via Crystal‐Field Engineering","authors":"Hangjie Jiang, Liyan Chen, Xianhui Wu, Zhaohua Luo, Ruiyang Li, Yongfu Liu, Zehua Liu, Peng Sun, W. You, Jun Jiang","doi":"10.1002/admt.202200519","DOIUrl":"https://doi.org/10.1002/admt.202200519","url":null,"abstract":"The near‐infrared (NIR) phosphor‐converted light‐emitting diode (pc‐LED) is a new NIR light source with both compact structure and high efficiency, and its performances is greatly depended on the NIR phosphors. Herein, this work presents a Cr3+‐doped gadolinium aluminum gallium garnet (GAGG:Cr3+) NIR ceramic phosphor with a broadband emission in the range of 650–850 nm, and optical performances that can be regulated via crystal‐field engineering. By optimizing the Al/Ga ratio, an external quantum efficiency as high as 65% is observed. The thermal stability is enhanced with the increase of Al content, which is attributed to the broadening of bandgap and the weakening of electron–phonon coupling effect. The NIR light output powers of the fabricated device based on the GAGG:Cr3+ ceramic are up to 88.9 mW @ 10 mA and 1247.7 mW @ 200 mA, while the electro‐optical conversion efficiencies were 28.5% @ 10 mA and 17.7% @ 200 mA, respectively. In addition, the NIR pc‐LED exhibited a strong penetrability such that the veins in a palm could be clearly identified, allowing for its potential use in biosecurity applications.","PeriodicalId":7200,"journal":{"name":"Advanced Materials & Technologies","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89673820","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4