Sticker Makes Nanoscale Light Manipulation Easier to Manufacture


Reading time ( words)

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. This research aligns with Purdue's Giant Leaps celebration, acknowledging the university’s global advancements made in health, longevity and quality of life as part of Purdue’s 150th anniversary. This is one of the four themes of the yearlong celebration’s Ideas Festival, designed to showcase Purdue as an intellectual center solving real-world issues.

Share

Print


Suggested Items

Extending Field of View in Advanced Imaging Systems

08/12/2019 | DARPA
The military relies on advanced imaging systems for a number of critical capabilities and applications – from Intelligence, Surveillance, and Reconnaissance (ISR) and situational awareness to weapon sights. These powerful systems enable defense users to capture and analyze visual data, providing key insights both on and off the battlefield.

Inexpensive, Simple Fabrication Method Poised to Expand Microlens Applications

06/17/2019 | OSA
A growing number of applications, including smartphone cameras, depend on microlenses to boost performance. A newly developed technology, called laser catapulting, could make it much easier and less expensive to fabricate these miniaturized lenses with customized properties, such as shape or focusing power.

DARPA, Santa Continue HO HO HO-liday Team-Up

12/26/2017 | DARPA
DARPA’s High-speed Optimized Handling of Holiday Operations (HO HO HO) initiative is celebrating its fourth anniversary this year, and the Agency is proud to continue its tradition of sharing breakthrough technologies to help Santa Claus and his elves more quickly and efficiently complete their holiday duties.



Copyright © 2019 I-Connect007. All rights reserved.