Researchers reported a high-performance and transparent nanoforce touch sensor by developing a thin, flexible, and transparent hierarchical nanocomposite (HNC) film. The research team says their sensor simultaneously features all the necessary characters for industrial-grade application: high sensitivity, transparency, bending insensitivity, and manufacturability.
Force touch sensors that recognize the location and pressure of external stimuli have received considerable attention for various applications, such as wearable devices, flexible displays, and humanoid robots. For decades, huge amounts of research and development have been devoted to improving pressure sensitivity to realize industrial-grade sensing devices. However, it remains a challenge to apply force touch sensors in flexible applications because sensing performance is subject to change and degraded by induced mechanical stress and deformation when the device is bent.
To overcome these issues, the research team focused on the development of non-air gap sensors to break away from the conventional technology where force touch sensors need to have air-gaps between electrodes for high sensitivity and flexibility.
The proposed non air-gap force touch sensor is based on a transparent nanocomposite insulator containing metal nanoparticles which can maximize the capacitance change in dielectrics according to the pressure, and a nanograting substrate which can increase transparency as well as sensitivity by concentrating pressure. As a result, the team succeeded in fabricating a highly sensitive, transparent, flexible force touch sensor that is mechanically stable against repetitive pressure.
Furthermore, by placing the sensing electrodes on the same plane as the neutral plane, the force touch sensor can operate, even when bending to the radius of the ballpoint pen, without changes in performance levels.
The proposed force touch has also satisfied commercial considerations in mass production such as large-area uniformity, production reproducibility, and reliability according to temperature and long-term use.
Finally, the research team applied the developed sensor to a pulse-monitoring capable healthcare wearable device and detected a real-time human pulse. In addition, the research team confirmed with HiDeep, Inc. that a seven-inch large-area sensor can be integrated into a commercial smartphone.
The team of Professor Jun-Bo Yoon, PhD student Jae-Young Yoo, and Dr. Min-Ho Seo from the School of Electrical Engineering carried out this study that was featured as a back cover in Advanced Functional Materials Journal.
PhD student Jae-Young Yoo who led this research said, “We successfully developed an industrial-grade force touch sensor by using a simple structure and fabrication process. We expect it to be widely used in user touch interfaces and wearable devices.”
The Latest on: Wearable electronics
via Google News
The Latest on: Wearable electronics
- Global Wearable Sensors Market Estimated to Reach USD 1,943.6 Million Over the Forecast Period 2017-2024 on April 17, 2019 at 6:12 am
Global wearable sensors market is expected to register a notable ... Analog devices Inc., TE Connectivity Ltd., mCube, Inc.and Knowles Electronics. The profiling enfolds key information of the ... […]
- Wearable Device Acts as Biopsy Alternative on April 17, 2019 at 3:48 am
A small wearable device developed by researchers at the University ... The device also includes tiny medical-grade pumps in a 3D-printed box with the electronics. Balancing all of these components in ... […]
- Electromagnetic measuring chambers providing electronics test boost on April 17, 2019 at 1:28 am
MRFR concludes that the consumer electronics segment accounts for the most significant share of the EMC shielding equipment market in terms of value. “Increased penetration of smart-phones and ... […]
- Wearable Computing Market to Cross US$ 40.92 Billion by 2024 on April 15, 2019 at 3:56 am
LG Electronics, Inc., Motorola Mobility Holdings, Inc., Nike, Inc., Zephyr Technology Corporation, and others are among the major players in the global Wearable Computing market. The companies are ... […]
- Wearable Fitness Electronics and Technology Market: Emerging Trends & Growing Popularity on April 13, 2019 at 1:44 pm
Edison, NJ -- (SBWIRE) -- 04/13/2019 -- HTF MI released a new market study on Global Wearable Fitness Electronics And Technology Market with 100+ market data Tables, Pie Chat, Graphs & Figures spread ... […]
- Wearable Electronics Market Will Fuel the Market Players to Harness on the Opportunities on April 12, 2019 at 12:39 pm
Wearable Electronics Market Report, published by Allied Market Research is forecast to reach $25.19 billion with a corresponding volume of 142.6 million units by 2020. The market revenue is expected ... […]
- From wearable tech to AI, UChicago builds future of computer science on April 12, 2019 at 9:33 am
Just off the lobby, University of Chicago computer scientists and artists are using digital fabrication tools in the Media Arts, Data and Design Center to create stretchable electronics that could ... […]
- Wearable AI Market Latest Trends, Share, Growth Industry Analysis and Forecast on April 12, 2019 at 12:48 am
On the basis of the application the market is segmented as consumer electronics, enterprise, healthcare, and others. The report also includes the profiles of key wearable AI companies along with their ... […]
- Computer Models Simplify the Synthesis of Organic Electronics on April 9, 2019 at 7:31 am
For example, their flexibility could let companies print them like paper or put them into clothing to power wearable electronics. However, they have failed to gain much industry traction due to the ... […]
via Bing News