OPTICAL CONFIGURATION METHODS FOR SPECTRAL SCATTER FLOW CYTOMETRY

• Main Authors: WELSH, Joshua A, BERZOFSKY, Jay A, ROSNER, Ari, TELFORD, William G, JONES, Jennifer C
• Format: Patent
• Language: English; French; German
• Published: 24.02.2021
• Subjects: COLORIMETRY; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT,POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED,VISIBLE OR ULTRA-VIOLET LIGHT; MEASURING; PHYSICS; RADIATION PYROMETRY; TESTING

Apparatus include an illumination source configured to produce and direct a multi-wavelength illumination beam to a microfluidic target that can include nanotags, a detector configured to receive a multi-wavelength detection beam from the microfluidic target and to produce a detection signal, wherein the multi-wavelength detection beam comprises light that is elastically side-scattered by an interaction between the multi-wavelength illumination beam and the nanotags in the microfluidic target, and a processor configured to receive the detection signal and to determine the presence of the nanotags in the microfluidic target by comparing multiple wavelength side-scatter intensity characteristics of the detection signal with predetermined multi-wavelength elastic side-scatter intensity profiles of one or more nanotag types. Methods are also disclosed that determine the presence of different nanotags responsive to a multi-wavelength detection beam based on a detected signal and predetermined multi-wavelength elastic side-scatter intensity profiles for different nanotag types.