• A sensitive and compact optical detector based on digital lock-in amplification 

      Harvie, Andrew J.; Yadav, Surendra Kumar; De Mello, John Christian (Peer reviewed; Journal article, 2021)
      We report a sensitive, fixed-wavelength, lock-in-based optical detector built from a light-emitting diode, two colour filters, a photodetector, a small number of discrete analogue components, and a low-cost microcontroller ...
    • A high-resolution polarimeter formed from inexpensive optical parts 

      Harvie, Andrew J.; Phillips, TW; De Mello, John Christian (Peer reviewed; Journal article, 2020)
      We describe a high resolution laser polarimeter built from commodity optical components. The optical rotation angle is determined by measuring the phase difference between two harmonically modulated polarised laser beams ...
    • Screening and characterisation of CdTe/CdS quantum dot-binding peptides for material surface functionalisation 

      Suwatthanarak, Thanawat; Tanaka, Masayoshi; Minamide, Taisuke; Harvie, Andrew J.; Tamang, Abiral; Critchley, Kevin; Evans, Stephen D.; Okochi, Mina (Peer reviewed; Journal article, 2020)
      Quantum dots (QDs) are promising nanomaterials due to their unique photophysical properties. For them to be useful in biological applications, the particle surface generally needs to be conjugated to biological molecules, ...