Abstract
This paper reports a novel method for measuring the effective refractive index (RI) of single living cell with a small integrated chip. This microchip is able to determine the RI of living cell in real time without extra requirements of fluorescence labeling and chemical treatments, offering low cost and high accuracy meanwhile. It might provide an efficient approach for diseases or cancer diagnosis. The measurement system integrates laser diode, microlenses, and microfluidic channels onto a monolithic chip. In the experiments, two standard polystyrene beads with nominal RIs are employed to calibrate the system and five types of cancerous cells are subsequently measured. The results indicate that the RI of the tested cells ranges from 1.392 to 1.401, which is larger than typical value 1.35-1.37 for normal cells.
Original language | English |
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Title of host publication | TRANSDUCERS '05 - 13th International Conference on Solid-State Sensors and Actuators and Microsystems - Digest of Technical Papers |
Pages | 1712-1715 |
Number of pages | 4 |
Volume | 2 |
DOIs | |
Publication status | Published - 9 Nov 2005 |
Externally published | Yes |
Event | 13th International Conference on Solid-State Sensors and Actuators and Microsystems, TRANSDUCERS '05 - Seoul, Korea, Republic of Duration: 5 Jun 2005 → 9 Jun 2005 |
Conference
Conference | 13th International Conference on Solid-State Sensors and Actuators and Microsystems, TRANSDUCERS '05 |
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Country/Territory | Korea, Republic of |
City | Seoul |
Period | 5/06/05 → 9/06/05 |
Keywords
- External cavity laser
- Lab-on-a-chip
- Microfluidics
- Microlens
- Refractive index
ASJC Scopus subject areas
- General Engineering