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Zeeshan Ahmed ()

A spectroscopist by training, Zeeshan Ahmed joined the Thermodynamic Metrology Group at NIST in 2012. His research activities focus on the development of novel, disruptive technologies that aim to replace legacy-based measurement platforms. Specifically, his current research is focused on the development of physics-constrained machine learning models for photonic sensors. This line of inquiry seeks to enable a cost-effective, integrated multi-functional photonic sensor package with intelligent-calibration capabilities.

Zeeshan Ahmed was awarded the Bronze medal for superior service in 2016 and the Equal Employment Opportunity Award in 2015 for his work with socio-economically disadvantaged students. He currently serves as the Chairman of Task group on Emerging Technologies under Contact Thermometry at the BIPM. In addition, he holds an Affiliate Faculty position with George Mason University’s Chemistry department and the Quantum Science and Engineering Center (QSEC) where he collaborates with fellow members on the development of disposable, embedded sensor networks for tissue engineering applications.

    Highlights

    Research Projects

    Awards

    • 2016 Bronze Medal for Superior Federal Service
    • 2016 STAM Altmetrics Award
    • 2015 Equal Employment Opportunity/Diversity Award
    • 2009 National Research Council Postdoctoral Research Associateship

    Publications

    Physics-based Models for photonic thermometers

    Author(s)
    Zeeshan Ahmed
    Resistance thermometry, meticulously developed over the last century, provides a time-tested method for taking temperature measurements. However, fundamental

    Emerging technologies in the field of thermometry

    Author(s)
    Zeeshan Ahmed, Graham Machin, Sergey Dedyulin
    The past decade saw the emergence of new temperature sensors that have the potential to disrupt a century-old measurement infrastructure based on resistance

    Patents (2018-Present)

    PH PHOTOTHERMAL SPECTROMETER AND PERFORMING PH PHOTOTHERMAL SPECTROSCOPY

    NIST Inventors
    Zeeshan Ahmed
    A pH photothermal spectrometer includes a container that receives an analyte medium and pH-sensitive chromophore. An excitation fiber and optical thermometer are disposed in the container. The optical thermometer include a light receiver disposed on a temperature detector fiber.

    PHOTONIC RESONATOR ANALYZER AND CHARACTERIZING A PHOTONIC RESONATOR

    NIST Inventors
    Zeeshan Ahmed
    We describe a method for distinguishing optical modes of a resonator based on the characterization of the temperature sensitivity of a mode’s resonance frequency and its dispersion characteristics. This method requires an interrogator (made up of a tunable laser, broadband light source, frequency

    A METHOD OF MODE IDENTIFICATION IN PHOTONIC RESONATOR

    NIST Inventors
    Zeeshan Ahmed
    We describe a method for distinguishing optical modes of a resonator based on the characterization of the temperature sensitivity of a mode’s resonance frequency and its dispersion characteristics. This method requires an interrogator (made up of a tunable laser, broadband light source, frequency
    Image for 10,816,325

    Deformometer for Determining Deformation of an Optical Cavity Optic

    NIST Inventors
    Zeeshan Ahmed , Kevin O Douglass , Stephen Eckel , Patrick Egan and Jay H. Hendricks
    A superconducting waveform synthesizer produces an arbitrary waveform and includes an encoder that produces a bitstream; a pattern generator that produces a current bias pulse from the bitstream; a Josephson junction that produces a quantized output pulse from the current bias pulse; and a converter
    Patent Images and description for 10,955,617

    High-Resolution Photonic Thermometer Article

    NIST Inventors
    Kevin O Douglass , Zeeshan Ahmed and Nikolai Klimov
    A high-resolution photonic thermometer article performs high-resolution thermometry and includes: a light source; a photonic thermometer with a waveguide and a photonic crystal cavity that stores light; a photodetector in communication with the photonic thermometer; a phase sensitive detector in
    Created May 31, 2018, Updated December 8, 2022