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Advanced Flexible Sensors and Electronics

A special issue of Sensors (ISSN 1424-8220). This special issue belongs to the section "Electronic Sensors".

Deadline for manuscript submissions: closed (30 September 2021) | Viewed by 5625

Special Issue Editor


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Guest Editor
Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Korea
Interests: oxide TFT; flexible display; flexible image sensor; pressure sensor

Special Issue Information

Dear Colleagues,

The Internet of Things (IoT) era is connecting the world, and accordingly, the number of devices connected wirelessly is increasing exponentially. In particular, IoT requires numerous types of flexible electronics that can operate anywhere, always on, any surface, and sensors that can recognize various types of signals.

In the smart space of the IOT era, the form factor will become important. And accordingly, the need for flexible, even stretchable sensors will be growing very large. In preparation for such an era, it seems very timely to prepare a Special Issue for “Advanced Flexible Sensors and Electronics.”

This Special Issue focuses on new developments of technology in flexible sensor and electronics, such as display components by means of new materials, new device structure, and operation system techniques. The sensor would specially focus on gas, chemical, bio-signal, biomaterial, and biometric images. Furthermore, papers introducing new characterization and real-time monitoring methods in a variety of fields will enrich this Special Issue. We would like to invite original research articles as well as review articles that contain theoretical, analytical, and experimental investigations covering all aspects of advanced flexible sensors and electronics.

Prof. Dr. Sang-Hee Ko Park
Guest Editor

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. Sensors 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 2600 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

  • soft electronic devices
  • flexible sensors based on thin film transistor
  • wearable sensors
  • stretchable electronics
  • health monitoring
  • from fiber to textile sensor

Published Papers (2 papers)

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13 pages, 20799 KiB  
Article
Space-Filling Curve Resistor on Ultra-Thin Polyetherimide Foil for Strain Impervious Temperature Sensing
by Korbinian Rager, David Jaworski, Chresten von der Heide, Alexander Kyriazis, Michael Sinapius, Iordania Constantinou and Andreas Dietzel
Sensors 2021, 21(19), 6479; https://doi.org/10.3390/s21196479 - 28 Sep 2021
Cited by 5 | Viewed by 2157
Abstract
Monitoring process parameters in the manufacture of composite structures is key to ensuring product quality and safety. Ideally, this can be done by sensors that are embedded during production and can remain as devices to monitor structural health. Extremely thin foil-based sensors weaken [...] Read more.
Monitoring process parameters in the manufacture of composite structures is key to ensuring product quality and safety. Ideally, this can be done by sensors that are embedded during production and can remain as devices to monitor structural health. Extremely thin foil-based sensors weaken the finished workpiece very little. Under ideal conditions, the foil substrate bonds with the resin in the autoclaving process, as is the case when polyetherimide is used. Here, we present a temperature sensor as part of an 8 µm thick multi-sensor node foil for monitoring processing conditions during the production and structural health during the lifetime of a construction. A metallic thin film conductor was shaped in the form of a space-filling curve to suppress the influences of resistance changes due to strain, which could otherwise interfere with the measurement of the temperature. FEM simulations as well as experiments confirm that this type of sensor is completely insensitive to the direction of strain and sufficiently insensitive to the amount of strain, so that mechanical strains that can occur in the composite curing process practically do not interfere with the temperature measurement. The temperature sensor is combined with a capacitive sensor for curing monitoring based on impedance measurement and a half-bridge strain gauge sensor element. All three types are made of the same materials and are manufactured together in one process flow. This is the key to cost-effective distributed sensor arrays that can be embedded during production and remain in the workpiece, thus ensuring not only the quality of the initial product but also the operational reliability during the service life of light-weight composite constructions. Full article
(This article belongs to the Special Issue Advanced Flexible Sensors and Electronics)
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13 pages, 3000 KiB  
Letter
A Dynamic Hysteresis Model and Nonlinear Control System for a Structure-Integrated Piezoelectric Sensor-Actuator
by Xiaobiao Shan, Henan Song, Han Cao, Lanshuang Zhang, Xuhang Zhao and Jizhuang Fan
Sensors 2021, 21(1), 269; https://doi.org/10.3390/s21010269 - 3 Jan 2021
Cited by 9 | Viewed by 2916
Abstract
The piezoelectric sensor-actuator plays an important role in micro high-precision dynamic systems such as medical robots and micro grippers. These mechanisms need high-precision position control, while the size of the sensor and actuator should be as small as possible. For this paper, we [...] Read more.
The piezoelectric sensor-actuator plays an important role in micro high-precision dynamic systems such as medical robots and micro grippers. These mechanisms need high-precision position control, while the size of the sensor and actuator should be as small as possible. For this paper, we designed and manufactured a structure-integrated piezoelectric sensor-actuator and proposed its PID (Proportion Integral Differential) control system based on the dynamic hysteresis nonlinear model and the inverse model. Through simplifying the structure of the piezoelectric sensor-actuator by the centralized parameter method, this paper establishes its dynamic model and explores the input–output transfer function by taking the relationship between the output force and displacement as the medium. The experiment shows the maximum distance of the hysteresis curve is 0.26 μm. By parsing the hysteresis curve, this paper presents a dynamic hysteresis nonlinear model and its inverse model based on a 0.5 Hz quasi-static model and linear transfer function. Simulation results show that the accuracy of the static model is higher than that of the dynamic model when the frequency is 0.5 Hz, but the compensation accuracy of the dynamic model is obviously better than that of the static model with the increase of the frequency. This paper also proposes a control system for the sensor-actuator by means of the inverse model. The simulation results indicate that the output root mean square error was reduced to one-quarter of the original, which proves that the structure-integrated piezoelectric sensor-actuator and its control system have a great significance for signal sensing and output control of micro high-precision dynamic systems. Full article
(This article belongs to the Special Issue Advanced Flexible Sensors and Electronics)
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