5 papers
Through the bottle authentication of red wine using near-IR fluorescence spectroscopy
Ané Kritzinger, Ralf Mouthaan, Graham D. Bruce +2
A major unaddressed challenge for food science remains the accurate characterisation of contents in sealed containers with a non-invasive method. This issue is particularly pressin…
Sensing with Twisted Light: Precision Measurement of Fractional Azimuthal Index to Determine Refractive Index
Christopher Perrella, Aman Anil Punse, Anastasiia Zalogina +6
Light beams possessing orbital angular momentum (OAM) have gained significant interest in areas such as optical manipulation, quantum entanglement, and super-resolved imaging. In i…
The Radiation Pressure of Light: historical perspectives and the role of structured light
Alexander C. Trowbridge, Ewan M. Wright, Kishan Dholakia
Light, or electromagnetic radiation, is well known to possess momentum, and the exchange of this momentum with a reflecting surface leads to radiation pressure. More often than not…
A neuromorphic camera for tracking passive and active matter with lower data throughput
Gabriel Britto Monteiro, Megan Lim, Tiffany Cheow Yuen Tan +8
We demonstrate the merits of using a neuromorphic, or event-based camera (EBC), for tracking of both passive and active matter. For passive matter, we tracked the Brownian motion o…
Optical Manipulation of Whispering Gallery Mode Microlasers for Precision Controlled Cellular Delivery
Soraya Caixeiro, Paloma Rodríguez-Sevilla, Kishan Dholakia +1
Whispering gallery mode microlasers are known for their high Q-factors, characteristic emission spectra and sensitivity to local refractive index changes. This sensitivity combined…