Optical nanosensors on CDs can detect without markers at low cost

March 19, 2014
A team of researchers in Spain are experimenting with optical nanosensors on CD surfaces as a way to detect biomolecules without using markers.

A team of researchers from the Universidad Politécnica de Madrid (UPM), in collaboration with researchers from the Universidad Complutense de Madrid (UCM) and the Universidad Politécnica de Valencia (UPV), all in Spain, are experimenting with optical nanosensors on compact disc (CD) surfaces as a way to detect biomolecules without using markers.

Related: Blu-ray adaptation enables low-cost screening of microorganisms, toxins, biomarkers

Related: 'Lab-on-DVD' approach enables fast, cheap HIV testing

The UPM researchers developed the nanosensors specifically for placement on CD surfaces; a standard CD player's optical reader can then examine the biological samples placed on the disc in a similar way that a CD's content is read. The nanosensors were designed, manufactured, and featured at the Institute of Optoelectronics Systems and Microtechnology (ISOM) of UPM, led by Carlos Angulo Barrios, one of the main researchers in the project. They consist of 250 nm nanohole arrays drilled in 100-nm-thick aluminum, and transmit light facilitating the detection of the molecules found on the surface. What's more, they use polycarbonate materials, which are the ones used to make CDs and DVDs, as they avoid the corrosion problem of standard aluminum and are still low-cost.

Full details of the work appear in the journal Plasmonics; for more information, please visit http://dx.doi.org/10.1007/s11468-014-9676-5.

-----

Follow us on Twitter, 'like' us on Facebook, and join our group on LinkedIn

Subscribe now to BioOptics World magazine; it's free!

About the Author

BioOptics World Editors

We edited the content of this article, which was contributed by outside sources, to fit our style and substance requirements. (Editor’s Note: BioOptics World has folded as a brand and is now part of Laser Focus World, effective in 2022.)

Sponsored Recommendations

Request a quote: Micro 3D Printed Part or microArch micro-precision 3D printers

April 11, 2024
See the results for yourself! We'll print a benchmark part so that you can assess our quality. Just send us your file and we'll get to work.

Request a free Micro 3D Printed sample part

April 11, 2024
The best way to understand the part quality we can achieve is by seeing it first-hand. Request a free 3D printed high-precision sample part.

How to Tune Servo Systems: The Basics

April 10, 2024
Learn how to tune a servo system using frequency-based tools to meet system specifications by watching our webinar!

Precision Motion Control for Sample Manipulation in Ultra-High Resolution Tomography

April 10, 2024
Learn the critical items that designers and engineers must consider when attempting to achieve reliable ultra-high resolution tomography results here!

Voice your opinion!

To join the conversation, and become an exclusive member of Laser Focus World, create an account today!