Multifunctional Materials最新文献_第2页

Nonlinear one-dimensional constitutive model for magnetostrictive materials 磁致伸缩材料的非线性一维本构模型

Multifunctional Materials Pub Date : 2021-09-15 DOI: 10.1088/2399-7532/ac4ccd

Alecsander N Imhof, J. Domann

引用次数: 0

Magnetic field tuning of mechanical properties of ultrasoft PDMS-based magnetorheological elastomers for biological applications. 生物用超软pdm基磁流变弹性体力学性能的磁场调谐。

Multifunctional Materials Pub Date : 2021-09-01 Epub Date: 2021-08-25 DOI: 10.1088/2399-7532/ac1b7e

Andy T Clark, Alexander Bennett, Emile Kraus, Katarzyna Pogoda, Andrejs Cēbers, Paul Janmey, Kevin T Turner, Elise A Corbin, Xuemei Cheng

引用次数: 2

Multifunctionality as design principle for contact lens materials 多功能作为隐形眼镜材料的设计原则

Multifunctional Materials Pub Date : 2021-08-17 DOI: 10.1088/2399-7532/ac1e7d

H. Sahabudeen, Rainhard Machatschek, A. Lendlein

引用次数: 2

Linking physical objects to their digital twins via fiducial markers designed for invisibility to humans 通过为人类隐形而设计的基准标记，将物理对象与它们的数字孪生体连接起来

Multifunctional Materials Pub Date : 2021-05-12 DOI: 10.1088/2399-7532/ac0060

M. Schwartz, Y. Geng, Hakam Agha, Rijeesh Kizhakidathazhath, Danqing Liu, G. Lenzini, J. Lagerwall

{"title":"Linking physical objects to their digital twins via fiducial markers designed for invisibility to humans","authors":"M. Schwartz, Y. Geng, Hakam Agha, Rijeesh Kizhakidathazhath, Danqing Liu, G. Lenzini, J. Lagerwall","doi":"10.1088/2399-7532/ac0060","DOIUrl":"https://doi.org/10.1088/2399-7532/ac0060","url":null,"abstract":"The ability to label and track physical objects that are assets in digital representations of the world is foundational to many complex systems. Simple, yet powerful methods such as bar- and QR-codes have been highly successful, e.g. in the retail space, but the lack of security, limited information content and impossibility of seamless integration with the environment have prevented a large-scale linking of physical objects to their digital twins. This paper proposes to link digital assets created through building information modeling (BIM) with their physical counterparts using fiducial markers with patterns defined by cholesteric spherical reflectors (CSRs), selective retroreflectors produced using liquid crystal self-assembly. The markers leverage the ability of CSRs to encode information that is easily detected and read with computer vision while remaining practically invisible to the human eye. We analyze the potential of a CSR-based infrastructure from the perspective of BIM, critically reviewing the outstanding challenges in applying this new class of functional materials, and we discuss extended opportunities arising in assisting autonomous mobile robots to reliably navigate human-populated environments, as well as in augmented reality.","PeriodicalId":18949,"journal":{"name":"Multifunctional Materials","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43075260","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: 8

Enabling effective electrochemical healing of structural steel 实现结构钢的有效电化学愈合

Multifunctional Materials Pub Date : 2021-05-12 DOI: 10.1088/2399-7532/abfb4f

Zakaria Hsain, Zhimin Jiang, J. Pikul

引用次数: 1

Facile room-temperature synthesis of cobalt sulphide for efficient oxygen evolution reaction 易于室温合成的高效析氧硫化钴

Multifunctional Materials Pub Date : 2021-05-06 DOI: 10.1088/2399-7532/abfeb8

Siyu Zhao, Manni Yang, Yeshu Tan, D. Brett, Guanjie He, I. Parkin

引用次数: 5

Conformation tuning of simple non-fused electron acceptors via oxygen and sulfur substitutions and its effects on photovoltaics 简单非熔融电子受体通过氧和硫取代的构象调谐及其对光伏的影响

Multifunctional Materials Pub Date : 2021-04-14 DOI: 10.1088/2399-7532/abf337

Zhen Yao, Yaokai Li, Shuixing Li, M. Shi, Hongzheng Chen

{"title":"Conformation tuning of simple non-fused electron acceptors via oxygen and sulfur substitutions and its effects on photovoltaics","authors":"Zhen Yao, Yaokai Li, Shuixing Li, M. Shi, Hongzheng Chen","doi":"10.1088/2399-7532/abf337","DOIUrl":"https://doi.org/10.1088/2399-7532/abf337","url":null,"abstract":"By altering the number and position of oxygen and sulfur substitutions, four simple non-fused electron acceptors, PTO-4F, PDO-4F, PDS-4F and PTS-4F, were synthesized via feasible two-step reactions. These four acceptors serve as good molecular models to investigate the heteroatom effects on performance of organic solar cells (OSCs) based on their blends with typical polymer donor PBDB-T. The quantity of intramolecular noncovalent bonds, conformation of the molecules and performance of OSCs can be easily adjusted. Gradually increasing oxygen atoms could influence the intramolecular noncovalent (O⋯S, O⋯H) interactions, backbone planarity, film morphology, and electrical and photovoltaic properties significantly. When replacing O atoms with S atoms, the torsional angle of the backbone increases from 3.5° to 97° owing to the reduction of O⋯S attractive coulomb interaction and/or O⋯H hydrogen bonding interaction. With increasing oxygen atom numbers, the absorption is red-shifted gradually and the energy levels are lifted. As a result, the power conversion efficiency of the device increases from 4.06% (PTS-4F) to 6.81% (PTO-4F). This study provides helpful molecular design guideline for the optimization of simple non-fused acceptors and device performances by finely controlling the weak intramolecular noncovalent interactions and molecular conformations.","PeriodicalId":18949,"journal":{"name":"Multifunctional Materials","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45843406","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

Multi-physics design optimization of structural battery 结构电池的多物理场设计优化

Multifunctional Materials Pub Date : 2021-04-06 DOI: 10.1088/2399-7532/abf158

Reza Pejman, E. C. Kumbur, A. Najafi

{"title":"Multi-physics design optimization of structural battery","authors":"Reza Pejman, E. C. Kumbur, A. Najafi","doi":"10.1088/2399-7532/abf158","DOIUrl":"https://doi.org/10.1088/2399-7532/abf158","url":null,"abstract":"Structural battery composite is a new class of multifunctional lightweight materials with profound potential in harvesting electrical energy in the form of chemical energy, while simultaneously providing structural integrity to the system. In this study, we present a multi-physics design optimization framework for structural battery. The objective of the optimization framework is to change the geometrical features and material types of the constituents in a composite lamina to maximize the allowable charging current for a constant rate of charging. In this optimization framework, three sets of inequality constraints are defined to keep the structural battery lightweight, and make sure that the amount of induced stress and generated heat due to the intercalation process remains small. We have also considered several design parameters such as geometrical features of the composite lamina, volume fractions of fibers and LiFePO4 particles, and material types of constituents. The proposed framework includes a gradient-based design optimization method with the ability to perform the optimization process under any source of uncertainty in the material properties, manufacturing process, operating conditions, etc. It also contains a Bayesian design optimization scheme to select the best candidate for the materials of the constituents in a structural battery. We also develop an analytical sensitivity analysis of several electrochemical/thermal/structural response metrics with respect to a few geometrical and material design parameters of a composite lamina. The results show that by using the proposed optimization framework, we are able to maximize the allowable charging current for a constant rate of charging in the optimized solution compared to the considered reference designs while satisfying all of the prescribed constraints. Furthermore, we increase the design reliability of structural battery by at least 45% compared to the deterministic optimized solution. Finally, we find the optimized material types for the fiber and matrix in a structural battery.","PeriodicalId":18949,"journal":{"name":"Multifunctional Materials","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47351999","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

Bioinspired nanoantennas for opsin sensitization in optogenetic applications: a theoretical investigation 生物启发纳米天线在光遗传学应用中的视蛋白敏化:理论研究

Multifunctional Materials Pub Date : 2021-03-22 DOI: 10.1088/2399-7532/abf0f9

C. H. Keck, N. Rommelfanger, Zihao Ou, Guosong Hong

{"title":"Bioinspired nanoantennas for opsin sensitization in optogenetic applications: a theoretical investigation","authors":"C. H. Keck, N. Rommelfanger, Zihao Ou, Guosong Hong","doi":"10.1088/2399-7532/abf0f9","DOIUrl":"https://doi.org/10.1088/2399-7532/abf0f9","url":null,"abstract":"Opsins with high sensitivity are desired to reduce dependence on optical fibers and enable deep-brain optogenetic stimulation through the intact scalp and skull, while minimizing brain tissue heating and the associated biasing of neural activity. While optimized opsin engineering has produced ultrasensitive and red-shifted opsins suitable for transcranial optogenetic stimulation, further improvements in sensitivity are throttled by biological limitations. Nanostructures are capable of generating near-field intensity enhancements of over 104, but thus far nanomaterials have not been applied to amplify local light intensity for optogenetic applications. In this manuscript, we propose the use of bowtie nanoantennas for local enhancement of 470 nm light to sensitize channelrhodopsin (ChR2) to low light intensities. We begin with a comparison of the near-field intensity enhancement offered by different metals at 470 nm, before selecting aluminum as the optimal material. Next, we tune the geometric parameters of aluminum bowtie nanoantennas to maximize the intensity enhancement at 470 nm. We further optimize enhancement by constructing bowtie nanoantenna arrays inspired by patterns occurring in biology, obtaining intensity enhancements up to a factor of 5000. Monte Carlo simulations suggest that transcranial 470 nm illumination of only 50 mW mm−2 is capable of stimulating bowtie-sensitized ChR2 in the deep brain (∼5 mm) in mice, enabling minimally invasive deep-brain stimulation with opsins found in the traditional optogenetic toolbox. This computation-guided optical antenna engineering approach opens opportunities for designing multifunctional materials for enhancing the efficiency of optogenetic neuromodulation, optical neural activity imaging, and highly localized electrical microstimulation in the brain.","PeriodicalId":18949,"journal":{"name":"Multifunctional Materials","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44058581","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

Multifunctional polydopamine-based nanoparticles: synthesis, physico-chemical properties and applications for bimodal photothermal/photodynamic therapy of cancer 多功能聚多巴胺纳米粒子的合成、理化性质及其在癌症双峰光热/光动力治疗中的应用

Multifunctional Materials Pub Date : 2021-03-22 DOI: 10.1088/2399-7532/abf0fa

Islam Zmerli, J. Michel, A. Makky

{"title":"Multifunctional polydopamine-based nanoparticles: synthesis, physico-chemical properties and applications for bimodal photothermal/photodynamic therapy of cancer","authors":"Islam Zmerli, J. Michel, A. Makky","doi":"10.1088/2399-7532/abf0fa","DOIUrl":"https://doi.org/10.1088/2399-7532/abf0fa","url":null,"abstract":"Polydopamine (PDA) is a mussel-inspired and a melanin-mimicking material that has attracted considerable attention during the recent years. This ‘polymer’ displays diverse promising properties, like its simple preparation procedures, easy functionalization, free radicals scavenging activity, outstanding photothermal and photoacoustic performance, and its great biocompatibility and biodegradability. A remarkable feature of PDA is its ability to form colloidal nanosized particles or nanoscaled coatings, allowing the preparation of various nanoparticulate structures. The first studies into PDA mainly explored the polymerization mechanisms of this material and the development of controlled preparation protocols. Later works focused on the investigation of these nanomaterials for the design and development of multifunctional platforms and their implementation in multiple biomedical fields, particularly in cancer treatment and bio-imaging. The purpose of this review is to (a) give a detailed overview about the synthesis methods of PDA and the formation mechanisms proposed so far in the literature, (b) outline the remarkable physico-chemical and functional properties of PDA nanomaterials, and (c) summarize the application of PDA-derived nanosystems in cancer theranostics and particularly in drug delivery and light-mediated cancer therapy with a special emphasis on the different strategies that can be used for the design of smart nanosystems with bimodal photothermal/photodynamic properties. Finally, a comparison of physicochemical properties and biomedical applications between PDA and other catecholamine derivatives is made.","PeriodicalId":18949,"journal":{"name":"Multifunctional Materials","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48756027","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: 12