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Nanomaterials
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Research and Application of Flexible Sensors Based on Micro/Nano Materials...
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Research and Application of Flexible Sensors Based on Micro/Nano Materials and Structures

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Nanoelectronics, Nanosensors and Devices".

Deadline for manuscript submissions: closed (1 January 2024) | Viewed by 3646

Special Issue Editors

Dr. Shuang Li

E-Mail Website
Guest Editor
Institute of Biomechanics and Medical Engineering, AML, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China
Interests: flexible electronics; sensors and actuators; smart materials and structures; biomechanics
Prof. Dr. Yewang Su

E-Mail Website
Guest Editor
State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China
Interests: flexible electronics; sensors and actuators; buckling and post buckling

Special Issue Information

Dear Colleagues,

In recent years, stretchable and flexible electronics integrated with various sensors, including strain sensors, ECG/EMG sensors, and temperature sensors, have broken through the limitations of traditional, rigid electronics, and have profoundly changed human lifestyles. Stretchable sensors and stretchable electrodes in particular are required for the monitoring of body deformation, motion, and ECG/EMG signals in applications of health monitoring, human–computer interactions, and extended reality. By the design of stretchable, conductive, nanomaterial-composed microstructures (metal nanofilms, metal nanowires, metal nanoparticles, carbon nanotubes, nanotechnology-based textiles, etc.), the functions of electrodes and sensors can be successfully realized, and the conductive/sensing performance can be regulated by the geometrical design. Therefore, the development of stretchable sensors/electrodes based on stretchable conductive nanomaterial-composed microstructures and the related theories and applications are of great interest in the research community. This Special Issue of Nanomaterials aims to highlight the latest advances in research and application of flexible sensors based on micro/nano materials and structures. 

Research areas may include (but are not limited to) the following:  

  • Deformation mechanisms of stretchable, conductive, nanomaterial-composed microstructures;
  • Sensing mechanisms of stretchable, conductive, nanomaterial-composed microstructures;
  • Development of stretchable sensors/electrodes;
  • Nanofilms, nanowires, and nanoparticles;
  • Mechanically guided structural designs;
  • Metal-based stretchable sensors/electrodes;
  • Carbon-based stretchable sensors/electrodes;
  • Textile-based stretchable sensors/electrodes;
  • Advanced manufacturing processes.

We invite authors to contribute original research and communication articles or comprehensive review articles through the webpage of Nanomaterials entitled “Research and Application of Flexible Sensors Based on Micro/Nano Materials and Structures”.

We look forward to receiving your contributions.

Dr. Shuang Li
Prof. Dr. Yewang Su
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Nanomaterials is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2900 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • flexible electronics
  • stretchable electronics
  • sensors
  • electrodes
  • nanomaterials
  • nanodevices
  • microstructures
  • theoretical models
  • structural designs
  • healthcare
  • human–computer interaction

Published Papers (2 papers)

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Research

16 pages, 2650 KiB  
Article
A Hierarchical Theory for the Tensile Stiffness of Non-Buckling Fractal-Inspired Interconnects
by Yongkang Wang, Zanxin Zhou, Rui Li, Jianru Wang, Baolin Sha, Shuang Li and Yewang Su
Nanomaterials 2023, 13(18), 2542; https://doi.org/10.3390/nano13182542 - 11 Sep 2023
Cited by 1 | Viewed by 833
Abstract
The design of non-buckling interconnects with thick sections has gained important applications in stretchable inorganic electronics due to their simultaneous achievement of high stretchability, low resistance, and low heat generation. However, at the same time, such a design sharply increased the tensile stiffness, [...] Read more.
The design of non-buckling interconnects with thick sections has gained important applications in stretchable inorganic electronics due to their simultaneous achievement of high stretchability, low resistance, and low heat generation. However, at the same time, such a design sharply increased the tensile stiffness, which is detrimental to the conformal fit and skin comfort. Introducing the fractal design into the non-buckling interconnects is a promising approach to greatly reduce the tensile stiffness while maintaining other excellent performances. Here, a hierarchical theory is proposed for the tensile stiffness of the non-buckling fractal-inspired interconnects with an arbitrary shape at each order, which is verified by the finite element analysis. The results show that the tensile stiffness of the non-buckling fractal-inspired interconnects decreases with the increase in either the height/span ratio or the number of fractal orders but is not highly correlated with the ratio of the two adjacent dimensions. When the ratio of the two adjacent dimensions and height/span ratio are fixed, the tensile stiffness of the serpentine fractal-inspired interconnect is smaller than that of sinusoidal and zigzag fractal-inspired interconnects. These findings are of great significance for the design of non-buckling fractal-inspired interconnects of stretchable inorganic electronics. Full article
(This article belongs to the Special Issue Research and Application of Flexible Sensors Based on Micro/Nano Materials and Structures)
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12 pages, 8254 KiB  
Article
Highly Sensitive and Flexible Capacitive Pressure Sensors Based on Vertical Graphene and Micro-Pyramidal Dielectric Layer
by Ke Zhao, Jiemin Han, Yifei Ma, Zhaomin Tong, Jonghwan Suhr, Mei Wang, Liantuan Xiao, Suotang Jia and Xuyuan Chen
Nanomaterials 2023, 13(4), 701; https://doi.org/10.3390/nano13040701 - 11 Feb 2023
Cited by 9 | Viewed by 2211
Abstract
Many practical applications require flexible high-sensitivity pressure sensors. However, such sensors are difficult to achieve using conventional materials. Engineering the morphology of the electrodes and the topography of the dielectrics has been demonstrated to be effective in boosting the sensing performance of capacitive [...] Read more.
Many practical applications require flexible high-sensitivity pressure sensors. However, such sensors are difficult to achieve using conventional materials. Engineering the morphology of the electrodes and the topography of the dielectrics has been demonstrated to be effective in boosting the sensing performance of capacitive pressure sensors. In this study, a flexible capacitive pressure sensor with high sensitivity was fabricated by using three-dimensional vertical graphene (VG) as the electrode and micro-pyramidal polydimethylsiloxane (PDMS) as the dielectric layer. The engineering of the VG morphology, size, and interval of the micro-pyramids in the PDMS dielectric layer significantly boosted the sensor sensitivity. As a result, the sensors demonstrated an exceptional sensitivity of up to 6.04 kPa−1 in the pressure range of 0–1 kPa, and 0.69 kPa−1 under 1–10 kPa. Finite element analysis revealed that the micro-pyramid structure in the dielectric layer generated a significant deformation effect under pressure, thereby ameliorating the sensing properties. Finally, the sensor was used to monitor finger joint movement, knee motion, facial expression, and pressure distribution. The results indicate that the sensor exhibits great potential in various applications, including human motion detection and human-machine interaction. Full article
(This article belongs to the Special Issue Research and Application of Flexible Sensors Based on Micro/Nano Materials and Structures)
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