Google Play icon

Sticker makes nanoscale light manipulation easier to manufacture

Share
Posted August 27, 2019

Researchers have given sensors the ability to manipulate light better, thanks to a sticker in the center of this device.

Image credit: Purdue University image/Bongjoong Kim

Human pathogens, such as HIV and viruses causing respiratory tract infection, have molecular fingerprints that are difficult to distinguish. To better detect these pathogens, sensors in diagnostic tools need to manipulate light on a nanoscale.

But there isn’t a good way to manufacture these light manipulation devices without damaging the sensors. Purdue University engineers have a solution: Stickers.

In a paper published in Nano Letters, the team integrated light manipulation devices called 3D plasmonic nanoarrays onto peelable films that can stick to any surface. They tested the sticker-nanoarray’s capabilities on the lenses of sensors, which make up conventional imaging systems.

The Air Force Research Laboratory supported the work and validated the sticker’s performance and properties.

“Unlike any existing approaches, the entire process occurs in distilled water at room temperature without the chemical, thermal or mechanical treatments that can damage sensitive surfaces, such as a sensor lens,” said Chi Hwan Lee, an assistant professor of biomedical engineering and mechanical engineering at Purdue.

To turn the nanoarrays into a sticker, the researchers built them into a film on a silicon wafer. When submerged in distilled water, the film peels cleanly from the wafer, allowing the wafer to be reused. The film can then stick to the desired surface without damaging it.

“Because this methodology allows 3D plasmonic nanoarrays to physically separate from a donor wafer and transfer over to another surface without defect, it offers a major cost- and time-saving factor in the manufacturing scheme,” Lee said.

The researchers also demonstrated that the process works for various classes of 3D plasmonic nanoarrays in both lateral and vertical configurations, offering more functionality.

Lee’s lab plans to further develop these sticker-nanoarrays for biological sensing applications, such as for protein detection in clinical diagnostics. The lab has already created electronic stickers that serve as bio-patches for drug delivery. They also can enable ordinary objects to wirelessly connect to a network, creating an “Internet of Things.”

The method has been patented via the Purdue Research Foundation Office of Technology Commercialization.

Reference:

Bongjoong Kim, Jiyeon Jeon, Yue Zhang, Dae Seung Wie, Jehwan Hwang, Sang Jun Lee, Dennis E. Walker, Jr., Don C. Abeysinghe, Augustine Urbas, Baoxing Xu, Zahyun Ku, and Chi Hwan Lee. Deterministic Nanoassembly of Quasi-Three-Dimensional Plasmonic Nanoarrays with Arbitrary Substrate Materials and Structures. In Nano Letters. DOI: 10.1021/acs.nanolett.9b02598

Source: Purdue University, by Kayla Wiles.

Featured news from related categories:

Technology Org App
Google Play icon
84,049 science & technology articles

Most Popular Articles

  1. Efficiency of solar panels could be improved without changing them at all (September 2, 2019)
  2. Diesel is saved? Volkswagen found a way to reduce NOx emissions by 80% (September 3, 2019)
  3. The famous old Titanic is disappearing into time - a new expedition observed the corrosion (September 2, 2019)
  4. The Time Is Now for Precision Patient Monitoring (July 3, 2019)
  5. Europe and US are Going to Try and Deflect an Asteroid (September 6, 2019)

Follow us

Facebook   Twitter   Pinterest   Tumblr   RSS   Newsletter via Email