Stretchable, transparent, and water-resistive touch panel using ion gel

2021 ◽  
pp. 113328
Author(s):  
Young Jun Son ◽  
Seunghwan Seo ◽  
Kyoung-Yong Chun ◽  
Jin Woo Bae ◽  
Ho Jung Lee ◽  
...  
Keyword(s):  
Touch Panel ◽  
Ion Gel

Investigation of a Capacitor Array of a Composite Capacitive Touch Panel

2018 ◽  
Vol 47 (5) ◽  
pp. 22-29
Author(s):  
T. Terent’ev ◽  
◽  
V. Shakhnov ◽  
A. Vlasov ◽  
A. Krivoshein ◽  
...  
Keyword(s):  
Touch Panel ◽  
Capacitor Array

scholarly journals Multi-Touch Interaction Generation Device by Spatiotemporally Switching Electrodes

Electronics ◽  
2021 ◽  
Vol 10 (12) ◽  
pp. 1475
Author(s):  
Masahiro Okamoto ◽  
Kazuya Murao
Keyword(s):  
High Speed ◽  
High Accuracy ◽  
Conductive Ink ◽  
Control Board ◽  
Touch Panel ◽  
Electrode Size ◽  
Touch Input ◽  
Touch Interaction ◽  
Multiple Electrodes ◽  
Touch Panels

With the spread of devices equipped with touch panels, such as smartphones, tablets, and laptops, the opportunity for users to perform touch interaction has increased. In this paper, we constructed a device that generates multi-touch interactions to realize high-speed, continuous, or hands-free touch input on a touch panel. The proposed device consists of an electrode sheet printed with multiple electrodes using conductive ink and a voltage control board, and generates eight multi-touch interactions: tap, double-tap, long-press, press-and-tap, swipe, pinch-in, pinch-out, and rotation, by changing the capacitance of the touch panel in time and space. In preliminary experiments, we investigated the appropriate electrode size and spacing for generating multi-touch interactions, and then implemented the device. From the evaluation experiments, it was confirmed that the proposed device can generate multi-touch interactions with high accuracy. As a result, tap, press-and-tap, swipe, pinch-in, pinch-out, and rotation can be generated with a success rate of 100%. It was confirmed that all the multi-touch interactions evaluated by the proposed device could be generated with high accuracy and acceptable speed.

Correlation Between Ion Gel Characteristics and Performance of Ionic Pressure Sensors

2021 ◽  
Author(s):  
Woo Young Lee ◽  
Yong Min Kim ◽  
Jin Han Kwon ◽  
Hong Chul Moon
Keyword(s):  
Ionic Liquid ◽  
Pressure Sensors ◽  
Convenient Approach ◽  
Ion Gel ◽  
And Performance ◽  
Ion Gels

In this study, a convenient approach is proposed to tune the properties of ion gels by utilizing mixed ionic liquid (IL) systems. Herein, a binary IL system consisting of 1-butyl-3-methylimidazolium...

scholarly journals Capacitance Effects of a Hydrophobic-Coated Ion Gel Dielectric on AC Electrowetting

Micromachines ◽  
2021 ◽  
Vol 12 (3) ◽  
pp. 320
Author(s):  
Taewoo Lee ◽  
Sung-Yong Park
Keyword(s):  
Contact Angle ◽  
Experimental Studies ◽  
Frequency Region ◽  
Mixing Enhancement ◽  
High Capacitance ◽  
Angle Change ◽  
Gel Layer ◽  
Resonance Frequencies ◽  
Ion Gel ◽  
Capacitance Effects

We present experimental studies of alternating current (AC) electrowetting dominantly influenced by several unique characteristics of an ion gel dielectric in its capacitance. At a high-frequency region above 1 kHz, the droplet undergoes the contact angle modification. Due to its high-capacitance characteristic, the ion gel allows the contact angle change as large as Δθ = 26.4°, more than 2-fold improvement, compared to conventional dielectrics when f = 1 kHz. At the frequency range from 1 to 15 kHz, the capacitive response of the gel layer dominates and results in a nominal variation in the angle change as θ ≈ 90.9°. Above 15 kHz, such a capacitive response of the gel layer sharply decreases and leads to the drastic increase in the contact angle. At a low-frequency region below a few hundred Hz, the droplet’s oscillation relying on the AC frequency applied was mainly observed and oscillation performance was maximized at corresponding resonance frequencies. With the high-capacitance feature, the ion gel significantly enlarges the oscillation performance by 73.8% at the 1st resonance mode. The study herein on the ion gel dielectric will help for various AC electrowetting applications with the benefits of mixing enhancement, large contact angle modification, and frequency-independent control.

scholarly journals Enhanced electrochemical performances of activated carbon (AC)-nickel-metal organic framework (SIFSIX-3-Ni) composite and ion-gel electrolyte based supercapacitor

2021 ◽  
Author(s):  
Kyu Seok Lee ◽  
Ye Ji Seo ◽  
Hyeon Taek Jeong
Keyword(s):  
Activated Carbon ◽  
Electrochemical Impedance ◽  
Metal Organic Framework ◽  
Gel Electrolyte ◽  
Electrochemical Performances ◽  
Galvanostatic Charge ◽  
Nickel Metal ◽  
Capacitive Behavior ◽  
Metal Organic ◽  
Ion Gel

AbstractIn this study, we investigated that the activated carbon (AC)-based supercapacitor and introduced SIFSIX-3-Ni as a porous conducting additive to increase its electrochemical performances of AC/SIFSIX-3-Ni composite-based supercapacitor. The AC/SIFSIX-3-Ni composites are coated onto the aluminum substrate using the doctor blade method and conducted an ion-gel electrolyte to produce a symmetrical supercapacitor. The electrochemical properties of the AC/SIFSIX-3-Ni composite-based supercapacitor are evaluated through cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and galvanostatic charge/discharge tests (GCD). The AC/SIFSIX-3-Ni composite-based supercapacitor showed reasonable capacitive behavior in various electrochemical measurements, including CV, EIS, and GCD. The highest specific capacitance of the AC/SIFSIX-3-Ni composite-based supercapacitor was 129 F g−1 at 20 mV s−1.

Inorganic/Organic Micro-Double-Network Ion Gel-Based Composite Membrane with Enhanced Mechanical Strength and CO2 Permeance

2021 ◽  
Author(s):  
Jinhui Zhang ◽  
Eiji Kamio ◽  
Masayuki Kinoshita ◽  
Atsushi Matsuoka ◽  
Keizo Nakagawa ◽  
...  
Keyword(s):  
Mechanical Strength ◽  
Composite Membrane ◽  
Double Network ◽  
Ion Gel

Recent advanced applications of ion-gel in ionic-gated transistor

2021 ◽  
Vol 5 (1) ◽  
Author(s):  
Depeng Wang ◽  
Shufang Zhao ◽  
Ruiyang Yin ◽  
Linlin Li ◽  
Zheng Lou ◽  
...  
Keyword(s):  
Recent Progress ◽  
Mechanical Stability ◽  
Dielectric Material ◽  
Charge Carriers ◽  
Future Perspectives ◽  
Organic Transistor ◽  
Ion Gel ◽  
Physical And Chemical ◽  
Large Capacitance ◽  
Advanced Applications

AbstractDiversified regulation of electrons have received much attention to realize a multi-functional transistor, and it is crucial to have a considerable control over the charge carriers in transistors. Ionic gel, as the dielectric material in transistors, facilitates a large capacitance, and high induced-carrier concentrations. This review presents the recent progress in ionic-gated transistors (IGTs) that have good mechanical stability as well as high physical and chemical stability. We first briefly introduce the various applications of IGTs in sensors, neuromorphic transistors, organic transistor circuits, and health detection. Finally, the future perspectives of IGTs are discussed and some possible solutions to the challenges are also proposed.

scholarly journals Full-frame and high-contrast smart windows from halide-exchanged perovskites

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
You Liu ◽  
Jungan Wang ◽  
Fangfang Wang ◽  
Zhengchun Cheng ◽  
Yinyu Fang ◽  
...  
Keyword(s):  
Contrast Ratio ◽  
High Contrast ◽  
Smart Window ◽  
Frame Size ◽  
Smart Windows ◽  
Ideal Solutions ◽  
Ion Gel ◽  
And Control ◽  
Colour Rendering ◽  
Perovskite Photovoltaic

AbstractWindow glazing plays an essential role to modulate indoor light and heat transmission, which is a prospect to save the energy cost in buildings. The latest photovoltachromic technology has been regarded as one of the most ideal solutions, however, to achieve full-frame size (100% active area) and high-contrast ratio (>30% variable in visible wavelength) for smart window applicability is still a challenge. Here we report a photovoltachromic device combining full-transparent perovskite photovoltaic and ion-gel based electrochromic components in a vertical tandem architecture without any intermediated electrode. Most importantly, by accurately adjusting the halide-exchanging period, this photovoltachromic module can realize a high pristine transmittance up to 76%. Moreover, it possesses excellent colour-rendering index to 96, wide contrast ratio (>30%) on average visible transmittance (400-780 nm), and a self-adaptable transmittance adjustment and control indoor brightness and temperature automatically depending on different solar irradiances.

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