“We are developing the design rules for a new generation of plastic–or, better, rubber–electronics for applications in energy, biomedical devices, wearable and conformable devices”
Nanoengineers at the University of California, San Diego are asking what might be possible if semiconductor materials were flexible and stretchable without sacrificing electronic function?
Today’s flexible electronics are already enabling a new generation of wearable sensors and other mobile electronic devices. But these flexible electronics, in which very thin semiconductor materials are applied to a thin, flexible substrate in wavy patterns and then applied to a deformable surface such as skin or fabric, are still built around hard composite materials that limit their elasticity.
Writing in the journal Chemistry of Materials, UC San Diego Jacobs School of Engineering professor Darren Lipomi reports on several new discoveries by his team that could lead to electronics that are “molecularly stretchable.”
Lipomi compared the difference between flexible and stretchable electronics to what would happen if you tried to wrap a basketball with either a sheet of paper or a thin sheet of rubber. The paper would wrinkle, while the rubber would conform to the surface of the ball.
“We are developing the design rules for a new generation of plastic–or, better, rubber–electronics for applications in energy, biomedical devices, wearable and conformable devices for defense applications, and for consumer electronics,” said Lipomi. “We are taking these design rules and doing wet chemistry in the lab to make new semiconducting rubber materials.”
While flexible electronics based on thin-film semiconductors are nearing commercialization, stretchable electronic materials and devices are in their infancy. Stretchable electronic materials would be conformable to non-planar surfaces without wrinkling and could be integrated with the moving parts of machines and the body in a way that materials exhibiting only flexibility could not be. For example, one of the chief applications envisioned by Lipomi is a low cost “solar tarp” that can be folded up for packaging and stretched back out to supply low cost energy to rural villages, disaster relief operations and the military operating in remote locations. Another long-term goal of the Lipomi lab is to produce electronic polymers whose properties–extreme elasticity, biodegradability, and self-repair–are inspired by biological tissue for applications in implantable biomedical devices and prosthetics.
Lipomi has been studying why the molecular structures of these “rubber” semiconductors cause some to be more elastic than others. In one project published recently in the journal Macromolecules, the Lipomi lab discovered that polymers with strings of seven carbon atoms attached produce exactly the right balance of stretchability and functionality. That balance is key to producing devices that are “flexible, stretchable, collapsible and fracture proof.”
Lipomi’s team has also created a high-performance, “low-bandgap” elastic semiconducting polymer using a new synthetic strategy the team invented. Solid polymers are partially crystalline, which gives them good electrical properties, but also makes the polymer material stiff and brittle. By introducing randomness in the molecular structure of the polymer, Lipomi’s lab increased its elasticity by a factor of two without decreasing the electronic performance of the material. Their discovery, published in RSC Advances, is also useful for applications in stretchable and ultra-flexible devices.
The Latest on: Stretchable electronics
via Google News
The Latest on: Stretchable electronics
- Stretchable Conductive Market to See Massive Growth by 2026 | DowDuPont, 3M, Toyobo, Indium, Osaka Organic Chemical Industry Ltdon May 13, 2020 at 12:42 am
Stretchable Conductive Market report is a valuable source of insightful data for business strategists It provides the industry overview with growth analysis and historical futuristic cost revenue ...
- U.S Cast Stretch Films Market 2020 is Evolving Rapidly with Economic Growth, Demand, and Forthcoming Opportunitieson May 12, 2020 at 11:00 pm
The Global Cast Stretch Films Market report provides a detailed analysis of the dynamic of the market with extensive focus on secondary research. The report sheds light on the current situation of the ...
- Let the Endgames begin: A few things to do as isolation drags onon May 11, 2020 at 5:05 am
Take out your Scrabble game and set aside some of the rules (most of the rules, really) for things like proper nouns and play with New Orleans things (beignets), phrases (makin' groceries), places ...
- The world’s first nutrition wearable device assesses dietary biomarkerson May 10, 2020 at 3:24 am
A Melbourne start-up is working on a nutrition wearable device. It assesses dietary biomarkers to help users manage conditions such as Type-2 diabetes.
- Researchers weave vital-signs monitoring sensors into clothingon May 5, 2020 at 3:20 pm
Researchers at the Massachusetts Institute of Technology have developed a technique to embed sensors into stretchy clothing fabrics, paving the way to ...
- Breathable electronics could lead to functional long-term wearable technologyon May 5, 2020 at 2:27 pm
North Carolina State University engineering researchers have created ultrathin, stretchable electronic material that is gas permeable, allowing the material to ...
- United States Stretchable and Conformal Electronics Market will take the highest jump during 2020-2025on May 3, 2020 at 9:52 pm
"The Stretchable and Conformal Electronics Market 2020 Research Report investigates the industry thoroughly and offers a complete study on Stretchable and Conformal Electronics volume, market Share, ...
- 'Breathable' electronics pave the way for more functional wearable techon April 30, 2020 at 6:57 am
Engineering researchers have created ultrathin, stretchable electronic material that is gas permeable, allowing the material to "breathe." The material was designed specifically for use in biomedical ...
- Stretchable lithium-ion battery based on new micro-honeycomb structureon April 29, 2020 at 9:21 am
A Korean research team has developed a lithium-ion battery that is flexible enough to be stretched. Dr. Jeong Gon Son's research team at the Photo-Electronic Hybrids Research Center at the Korea ...
- Stretchable Electronics Market May Set New Growth Story | Adidas, Dupont, 3Mon April 22, 2020 at 4:16 am
Advance Market Analytics recently introduced Global Stretchable Electronics Market study with in-depth overview, describing about the Product / Industry Scope and elaborates market outlook and status ...
via Bing News