Research & Development World

  • R&D World Home
  • Topics
    • Aerospace
    • Automotive
    • Biotech
    • Careers
    • Chemistry
    • Environment
    • Energy
    • Life Science
    • Material Science
    • R&D Management
    • Physics
  • Technology
    • 3D Printing
    • A.I./Robotics
    • Software
    • Battery Technology
    • Controlled Environments
      • Cleanrooms
      • Graphene
      • Lasers
      • Regulations/Standards
      • Sensors
    • Imaging
    • Nanotechnology
    • Scientific Computing
      • Big Data
      • HPC/Supercomputing
      • Informatics
      • Security
    • Semiconductors
  • R&D Market Pulse
  • R&D 100
    • Call for Nominations: The 2025 R&D 100 Awards
    • R&D 100 Awards Event
    • R&D 100 Submissions
    • Winner Archive
    • Explore the 2024 R&D 100 award winners and finalists
  • Resources
    • Research Reports
    • Digital Issues
    • R&D Index
    • Subscribe
    • Video
    • Webinars
  • Global Funding Forecast
  • Top Labs
  • Advertise
  • SUBSCRIBE

Starch and Graphene Hydrogel Aids Brain Implant Electrodes

By University of the Basque Country | November 27, 2018

Kizkitza González. Image: UPV/EHU

Hydrogels with electrical and antibacterial properties suitable for neural interfaces have been created in a piece of work at the UPV/EHU-University of the Basque Country

The Materials + Technology research group at the UPV/EHU’s Faculty of Engineering-Gipuzkoa has, in collaboration with the University of Strasbourg, developed some hydrogels with potential biomedical applications.

Starch was used as the raw material and a three-dimensional network structure was produced. When graphene and salvia extracts were added, the hydrogel was provided with electrical properties as well as the necessary antibacterial ones.

Hydrogels are physical and chemical polymer networks capable of retaining large quantities of liquid in aqueous conditions without losing their dimensional stability. They are used in a whole host of applications and when various components are added to them, they acquire specific properties such as electrical conductivity.

This was the path followed by the Materials + Technology research group in the Department of Chemical Engineering and Environment of the UPV/EHU’s Faculty of Engineering-Gipuzkoa, and for its hydrogel they selected a biopolymer that had not been used hitherto for applications of this type: starch.

“One of our lines of research focuses on starch and we regard it as having biological, and physical and chemical properties suitable for producing hydrogels,” says Kizkitza Gonzalez-Munduate, a member of the group. 

When creating the hydrogel, they took its use in neural interfaces into consideration, in other words, the components responsible for the electrical connection in implants that interact with the nervous system.

“Due to the fact that the traditional electrodes of neural interfaces made of platinum or gold, for example, are rigid, they require conductive polymer coatings to bring their flexibility closer to that of neural tissue. Right now, however, smaller devices are being called for and also ones that offer better mechanical, electrical and biological properties,” explains the researcher.

The hydrogels developed “address these demands very well,” says Gonzalez. To provide the hydrogel with electrical conductivity, they resorted to graphene, “a material of great interest. It provides electrical properties that are highly suited to the hydrogel, but this also has a drawback: it is not easily stabilised in water. We used extracts of salvia to overcome this obstacle and to render the graphene stable in an aqueous medium. These extracts also make the hydrogel even more suitable, if that is possible, for use in medicine as it also has antimicrobial and anti-inflammatory properties,” she says.

Another of the distinctive features of this research was the use of so-called click chemistry to produce the hydrogel.

“It is a strategy that in recent years has been grabbing the attention of the scientific community, because, unlike other means of synthesis, click chemistry does not tend to use catalysts in the reactions; in addition, no by-products are generated and they are high-performance reactions,” says Gonzalez.  

Although this product was designed for a very specific application, the researcher recognizes that this product of bioengineering has a long way to go until it can be used in patients.

“It was a piece of research at an initial level focusing on the engineering side relating to the material. Now, the various levels will have to be overcome and the corresponding tests designed.”

Source: University of the Basque Country

Related Articles Read More >

The emerging materials shaping next-generation semiconductor electronics
24 R&D trends that redefined 2024
Graphene-based flowmeter sensor measures nano-rate fluid flows, Part 3: The sensor
Graphene-based flowmeter sensor measures nano-rate fluid flows, Part 2: The graphene context
rd newsletter
EXPAND YOUR KNOWLEDGE AND STAY CONNECTED
Get the latest info on technologies, trends, and strategies in Research & Development.
RD 25 Power Index

R&D World Digital Issues

Fall 2024 issue

Browse the most current issue of R&D World and back issues in an easy to use high quality format. Clip, share and download with the leading R&D magazine today.

Research & Development World
  • Subscribe to R&D World Magazine
  • Enews Sign Up
  • Contact Us
  • About Us
  • Drug Discovery & Development
  • Pharmaceutical Processing
  • Global Funding Forecast

Copyright © 2025 WTWH Media LLC. All Rights Reserved. The material on this site may not be reproduced, distributed, transmitted, cached or otherwise used, except with the prior written permission of WTWH Media
Privacy Policy | Advertising | About Us

Search R&D World

  • R&D World Home
  • Topics
    • Aerospace
    • Automotive
    • Biotech
    • Careers
    • Chemistry
    • Environment
    • Energy
    • Life Science
    • Material Science
    • R&D Management
    • Physics
  • Technology
    • 3D Printing
    • A.I./Robotics
    • Software
    • Battery Technology
    • Controlled Environments
      • Cleanrooms
      • Graphene
      • Lasers
      • Regulations/Standards
      • Sensors
    • Imaging
    • Nanotechnology
    • Scientific Computing
      • Big Data
      • HPC/Supercomputing
      • Informatics
      • Security
    • Semiconductors
  • R&D Market Pulse
  • R&D 100
    • Call for Nominations: The 2025 R&D 100 Awards
    • R&D 100 Awards Event
    • R&D 100 Submissions
    • Winner Archive
    • Explore the 2024 R&D 100 award winners and finalists
  • Resources
    • Research Reports
    • Digital Issues
    • R&D Index
    • Subscribe
    • Video
    • Webinars
  • Global Funding Forecast
  • Top Labs
  • Advertise
  • SUBSCRIBE