Home / Knowledge / News / Textiles / Implantable silk metamaterials may advance biomedicine, biosensing
Implantable silk metamaterials may advance biomedicine, biosensing
01
Sep '10
Researchers at the Tufts University School of Engineering and Boston University have fabricated and characterized the first large area metamaterial structures patterned on implantable, bio-compatible silk substrates.

Metamaterials are artificial electromagnetic composites, typically made of highly conducting metals, whose structures respond to electromagnetic waves in ways that atoms in natural materials do not. The most futuristic metamaterials would absorb all light, to create heat to destroy cancerous tissue, or bend light completely around an object, rendering that object invisible—an imaginary delight for fans of science fiction or spy novels.

"However, the real power of metamaterials is the possibility of constructing materials with a user-designed electromagnetic response at a precisely controlled target frequency. This opens the door to novel electromagnetic behaviors such as negative refractive index, perfect lensing, perfect absorbers and invisibility cloaks," explains Tufts Professor of Biomedical Engineering Fiorenzo Omenetto, who led the research team. Omenetto also holds an appointment in the Department of Physics at Tufts School of Arts and Sciences.

The team focused on metamaterial silk composites that are resonant at the terahertz frequency. This is the frequency where many chemical and biological agents show unique "fingerprints," which could potentially be used for biosensing.

Small Antennas Act as One
The researchers sprayed gold-based metamaterial structures directly on pre-made silk films with micro-fabricated stencils using a shadow mask evaporation technique. Spraying the metamaterial onto the flexible silk films created a composite so pliable that it could be wrapped into small, capsule-like cylinders.

Silk films are highly transparent at THz frequencies, so metamaterial silk composites display a strong resonant electromagnetic response. Each fabricated sample was 1 square centimeter and contained 10,000 metamaterial resonators with unique resonant response at the desired frequencies.

According to Fiorenzo Omenetto, the research team likens the concept to "a very peculiar kind of antenna--actually, a lot of small antennas that behave as one. The silk metamaterial composite is sensitive to the dieletric properties of the silk substrate and can monitor the interaction between the silk and the local environment. For example, the metamaterial might signal changes in a bioreactive silk substrate that has been doped with proteins or enzymes."

The addition of a pure biological substrate such as silk to the gold metamaterial adds immense latitude and opportunity for unforeseen applications, says Professor Richard Averitt, one of Omenetto's collaborators from Boston University and an expert on metamaterials.

The resonance response could be used as an implantable electromagnetic signature for contrast agents or bio-tracking applications, says co-author Hu Tao, a former Boston University graduate student who is now a postdoctoral associate in Omenetto's lab.


Must ReadView All

Market share of Indian textile items expand in 13 nations

Textiles | On 11th Dec 2017

Market share of Indian textile items expand in 13 nations

Thirteen countries — Germany, France, Italy, the United States,...

Bangladesh garment exports rise 7.46% in July-Nov '17

Apparel/Garments | On 11th Dec 2017

Bangladesh garment exports rise 7.46% in July-Nov '17

Readymade garment exports from Bangladesh increased 7.46 per cent in...

Cotton price increase is not sustainable: ITF

Textiles | On 11th Dec 2017

Cotton price increase is not sustainable: ITF

The increase in cotton price seen last week is only a short-term...

Interviews View All

Varinder Singh Jawanda
Trendy Bharat

Sizing and fitting issues are inherent problems for companies expanding...

Giovanni Pizzamiglio, Paolo Crespi & Riccardo Robustelli
Epson, For.Tex & F.lli Robustelli

‘The percentage share of printing in the global textile market is pretty...

C. Dhandayuthapani
Mag Solvics Pvt. Ltd

ITME 2016 exploited our full strength like never before

Urmil Arya

Sushila International, a well established textile organisation established ...

Erik Sy

Manila-based CustomThread is a start-up offering premium custom apparel...

Liz Manning

<div><b>Liz Manning</b>, Business Development Manager at Catexel, has...

Kevin Nelson
TissueGen

Kevin Nelson, Chief Scientific Officer, TissueGen discusses the growing...

Marten Alkhagen
Swerea IVF AB

Marten Alkhagen, Senior Scientist - Nonwoven and Technical Textiles of...

Lynda Kelly
Suominen Corporation

Suominen Corporation is a manufacturer of nonwovens as roll goods for...

Sidharth Sinha
Sidharth Sinha

<b>Sidharth Sinha</b> has contributed to the successful rebirth and...

Nisha Chanda
Whistling Woods International School of Fashion

<div>A lack of upgraded courses in costume designing and fashion as per...

Prathyusha Garimella
Prathyusha Garimella

Hyderabad-based designer <b>Prathyusha Garimella</b> is known for blending ...

Press Release

Press Release

Letter to Editor

Letter to Editor

RSS Feed

RSS Feed

Submit your press release on


editorial@fibre2fashion.com

Letter To Editor






(Max. 8000 char.)

Search Companies





SEARCH

December 2017

Subscribe today and get the latest update on Textiles, Fashion, Apparel and so on.

news category


Related Categories:

Planning to Take the Leap towards
Sustainability?

Do you see sustainability as a route to business growth?

Yes No

Do you think the sustainability space has the needed tools and resources available for a business to lead change?

Yes No

Active Poll

Do you see sustainability as a route to business growth?

Yes
69.2%
No
12.1%
Skip
18.7%

Total Votes: 91

Do you think adopting a sustainable approach will be a profitable move for your business?

Yes No

Active Poll

Do you think the sustainability space has the needed tools and resources available for a business to lead change?

Yes
61.5%
No
30.8%
Skip
7.7%

Total Votes: 91

Do you want the world to know about your sustainability journey and your business’ environmental footprint?

Yes No

Active Poll

Do you think adopting a sustainable approach will be a profitable move for your business?

Yes
86.8%
No
9.9%
Skip
3.3%

Total Votes: 91

Thanks for your valuable feedback. Claim your free latest sustainability e-book.

Active Poll

Do you want the world to know about your sustainability journey and your business’ environmental footprint?

Yes
81.3%
No
8.8%
Skip
9.9%

Total Votes: 91


E-News Insight
Subscribe Today and Get the
Latest News Update in Your Mail Box.
Advanced Search