System for detecting a target material in a sample using liquid crystals

US11513117B2 · kind B2 · utility

Assignees

• University of Tehran · IR
• Mohammad Mohammadimasoudi · IR

Inventors

• Mohammad Mohammadimasoudi · Evergem, BE
• Mohamadreza Gholaminezhadshemirani · Tehran, IR
• Ali Goudarzi · Tehran, IR
• mahboubeh Esmaeilpour · Tehran, IR
• Hosein Shahsavarani · Kyoto, JP
• Ezeddin Mohajerani · Tehran, IR
• ALi Poorkhalil · Tehran, IR

Key dates

• Filing date: Apr 19, 2022
• Grant date: Nov 29, 2022
• Expiry date: Apr 19, 2042

Classification

• Technology area (CPC G): Physics
• CPC primary: G02F1/13
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A system for detecting a target material in a sample. The system includes a sensor, a light source, an image-capturing device, two linear-crossed polarizers including a first polarizer and a second polarizer, and a processing unit. The sensor is configured to place the sample thereon and includes a fabric impregnated with liquid crystals (LCs). The light source is configured to transmit a beam of light through a path passing from the first polarizer, the sensor, and the second polarizer. The image-capturing device is configured to capture an image of a surface of the second polarizer. The image contains a pattern formed by orientations of LCs corresponding to the sample. The processing unit is configured to detect a presence of the target material in the sample by analyzing the captured image.