By Topic

Light-addressable potentiometric penicillin image sensor using the self-assembled monolayer immobilizing method

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

5 Author(s)
Su-Won Jang ; Dept. of Electron. Eng., Kyungpook Nat. Univ., Daegu, South Korea ; Sun-Young Lee ; Kwang-Man Lee ; Dae-Hyuk Kwon
more authors

In this study, the LAPSs (light addressable potentiometric sensors) which have devices of Si3N4/SiO2/Si, Ta2O5/SiO2/Si structure were fabricated. Also, it was investigated the response characteristics to penicillin concentration and detected the 2D images of 128 × 128 pixels. The penicillinase was immobilized on the devices to hydrolyze the penicillin using self-assembled monolayer (SAM) method. The measuring system was simplified by using Lab VIEW software. The result of the enzyme reaction, the sensitivity of the sensor which has Si3N4 surfaces was 60 mV/decade and Ta2O5 surfaces was 74 mV/decade in the range of 0.1 mM ∼ 10 mM of the penicillin concentration. Image detecting time by an enzyme reaction between penicillin and penicillinase took about 10 minutes at 128 × 128 pixels in 1 × 1 cm sensing area.

Published in:

Solid-State Sensors, Actuators and Microsystems, 2005. Digest of Technical Papers. TRANSDUCERS '05. The 13th International Conference on  (Volume:2 )

Date of Conference:

5-9 June 2005