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Tactile Sensors and Sensing System 2019
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Tactile Sensors and Sensing System 2019

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

Deadline for manuscript submissions: closed (20 August 2020) | Viewed by 9375

Special Issue Editor

Prof. Dr. Maurizio Valle

E-Mail Website
Guest Editor
Department of Electrical, Electronic and Telecommunications Engineering, and Naval Architecture, University of Genova, Via Opera Pia 11A, I16145 Genova, Italy
Interests: biomedical circuits and systems; electronic/artificial sensitive skin; tactile sensing systems for prosthetics and robotics; neuromorphic touch sensors; electronic and microelectronic systems
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Collegues,

Tactile sensors acquire information through touch; measurands include temperature, vibration, softness, texture, shape, composition, and shear and normal forces. Tactile sensors are basically distributed sensors which translate mechanical and physical variables and pain stimuli into electrical variables. Contact data are further processed to decode high-level information such as object size and surface contact features. Tactile arrays should be mechanically flexible (i.e., conformable to the object on which they are mounted) and stretchable, and tactile information decoding must be implemented in real time. The development of artificial tactile sensing is a big challenge, as it involves numerous research areas. Tactile sensors have been receiving increasing and unprecedented interest by the scientific community since some seminal works were published in the nineties; since then, roboticists and researchers in the biomedical and health care domain started publishing their results in tactile sensors with an increasing pace. New research areas and application domains such as prosthetics, soft robotics, haptics, electronic skin, and virtual reality have received a boost by the advancements in technology, devices, systems, and applications. In this Special Issue, we aim to consolidate recent achievements and findings in tactile sensors and to make a comprehensive assessment of meaningful and relevant results over the past years.

The Special Issue aims to pave the way of future research directions and also open new perspectives enabled by recent achievements. Special attention will be given to novel applications in (but not limited to) health care, human–machine interaction, virtual/augmented reality, arts, and tactile internet. In this Special Issue, we focus on both insights and advancements in tactile sensing with the goal of bridging different research areas (e.g., material science, computer science, electronics, robotics, neuroscience, mechanics, sensors, MEMS/NEMS, addictive and 3D manufacturing, bio and neuro-engineering). We would like to receive commentaries, perspectives, and insightful reviews on related topics as well as technological breakthroughs of original works, civil, and industrial applications in both short communications and full papers.

Prof. Dr. Maurizio Valle
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

  • materials
  • models
  • manufacturing technology
  • additive and 3D manufacturing
  • novel tactile sensors
  • flexible, conformable and stretchable sensors and arrays
  • electronic interface
  • artificial and electronic skin
  • tactile data processing and interpretation
  • haptics
  • soft robotics
  • prosthetics
  • neuro-rehabilitation
  • neuro- and bio-engineering
  • touch-based human–robot interaction
  • human–machine interaction
  • touch and vision sensing integration
  • tactile internet
  • touch sensors in consumer goods
  • virtual/augmented reality
  • touch sensors in arts
  • touch sensors in IoT

Published Papers (2 papers)

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Research

15 pages, 7069 KiB  
Article
Ultrasonic Touch Sensing System Based on Lamb Waves and Convolutional Neural Network
by Cheng-Shen Chang and Yung-Chun Lee
Sensors 2020, 20(9), 2619; https://doi.org/10.3390/s20092619 - 04 May 2020
Cited by 12 | Viewed by 3986
Abstract
A tactile position sensing system based on the sensing of acoustic waves and analyzing with artificial intelligence is proposed. The system comprises a thin steel plate with multiple piezoelectric transducers attached to the underside, to excite and detect Lamb waves (or plate waves). [...] Read more.
A tactile position sensing system based on the sensing of acoustic waves and analyzing with artificial intelligence is proposed. The system comprises a thin steel plate with multiple piezoelectric transducers attached to the underside, to excite and detect Lamb waves (or plate waves). A data acquisition and control system synchronizes the wave excitation and detection and records the transducer signals. When the steel plate is touched by a finger, the waveform signals are perturbed by wave absorption and diffraction effects, and the corresponding changes in the output signal waveforms are sent to a convolutional neural network (CNN) model to predict the x- and y-coordinates of the finger contact position on the sensing surface. The CNN model is trained by using the experimental waveform data collected using an artificial finger carried by a three-axis motorized stage. The trained model is then used in a series of tactile sensing experiments performed using a human finger. The experimental results show that the proposed touch sensing system has an accuracy of more than 95%, a spatial resolution of 1 × 1 cm2, and a response time of 60 ms. Full article
(This article belongs to the Special Issue Tactile Sensors and Sensing System 2019)
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17 pages, 14347 KiB  
Article
A Non-Touchscreen Tactile Wearable Interface as an Alternative to Touchscreen-Based Wearable Devices
by Hyoseok Yoon and Se-Ho Park
Sensors 2020, 20(5), 1275; https://doi.org/10.3390/s20051275 - 26 Feb 2020
Cited by 8 | Viewed by 4893
Abstract
Current consumer wearable devices such as smartwatches mostly rely on touchscreen-based user interfaces. Even though touch-based user interfaces help smartphone users quickly adapt to wearable devices with touchscreens, there exist several limitations. In this paper, we propose a non-touchscreen tactile wearable interface as [...] Read more.
Current consumer wearable devices such as smartwatches mostly rely on touchscreen-based user interfaces. Even though touch-based user interfaces help smartphone users quickly adapt to wearable devices with touchscreens, there exist several limitations. In this paper, we propose a non-touchscreen tactile wearable interface as an alternative to touchscreens on wearable devices. We designed and implemented a joystick-integrated smartwatch prototype to demonstrate our non-touchscreen tactile wearable interface. We iteratively improved and updated our prototype to improve and polish interaction ideas and prototype integration. To show feasibility of our approach, we compared and contrasted form factors of our prototype against the latest nine commercial smartwatches in terms of their dimensions. We also show response time and accuracy of our wearable interface to discuss our rationale for an alternative and usable wearable UI. With the proposed tactile wearable user interface, we believe our approach may serve as a cohesive single interaction device to enable various cross-device interaction scenarios and applications. Full article
(This article belongs to the Special Issue Tactile Sensors and Sensing System 2019)
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