Photonic Crystal Fiber Sensors on the Way?

A research team led by Henry Du of the Stevens Institute of Technology is investigating ways to enhance photonic crystal fiber (PCF) sensors, sensor arrays, and sensor networks for applications including remote and dynamic environmental monitoring, manufacturing process safety, medical diagnostics, and homeland security.

The work entails molecular and nanoscale surface modification, advanced laser techniques, and computer simulation. According to Du, the optically robust PCFs with surface-functionalized, axially aligned air holes will surpass conventional fiber-optic sensor technology for chemical and biological detection. The sensors could also prove a powerful research platform for in situ fundamental studies of surface chemistry and chemical/biological interactions in microchemical and microbiological systems.

The PCFs will be fabricated by means of a modified sol-gel method for optical fibers with the aid of simulation-based design for optimum light-analyte interactions. The functionalized hollow core or cladding air holes will be filled with analytes to evaluate PCF sensing capabilities. Nanoscale surface functionalization will be achieved with two strategies:

  • 1. Surface attachment of Ag nanoparticles mediated by 3-mercaptopropyltrimethoxysilane self-assembled monolayer (SAM) for chemical sensing of NOX, CO, and SO2, where surface-enhanced Raman scattering (SERS) can be exploited for high sensitivity and molecular specificity
  • 2. Surface binding of biospecific recognition entities for biological sensing using certain recognition pairs—biotin/ avidin, cholera toxin/antitoxin, and organophosphorous hydrolase/paraoxon, where SERS may also be exploited.
 Short Takes
Short Takes

SENSORS EXPO & CONFERENCE

Sensors 2019 Hits Silicon Valley June 25-27!

Join 7,000+ engineers this June in San Jose at the sensor industry’s biggest event! With 65+ Technical Sessions, 100+ Leading Speakers, 10 new and updated tracks, and 300+ Interactive Exhibits, there’s more opportunity than ever to connect with this booming industry and the technologies driving it. See thousands of the newest technologies in action, learn about the latest applications, and develop invaluable partnerships at the only event dedicated to sensors, connectivity, and systems.

In addition to Dr. Du, the research team consists of Svetlana Sukhishvili, Hong-Liang Cui, Rainer Martini, Kurt Becker, and Christos Christodoulatos, all of Stevens, and Ryan Bise of OFS Laboratories. The research is supported by a $1.3 million NSF grant.

Contact Dr. Henry Du, Chemical, Biochemical and Materials Engineering Dept., Stevens Institute of Technology, Hoboken, NJ; 201-216-5262, [email protected], www.stevens-tech.edu.

Suggested Articles

Palo Alto Networks sees “greater firepower for DDoS attacks” with Mirai malware.

Smart smoke detectors, parking and biking apps abound on DT's IoT network

Cisco will apply industrial networking and IOx to give control engineers deep data insights