Mustafa Tahsin GÜLER, İsmail BİLİCAN

Mikroakışkan Çip ile Kapasitif Çözücü Tespiti

Çözücüler, hem günlük hayatta hem de hemen hemen tüm laboratuvarlarda yaygın olarak kullanılmaktadır. Birçok alanda kullanılan bu çözücülerin tespiti ve tanımlanması, sağlık, toksikoloji ve çevre açısından büyük önem taşımaktadır. Bu nedenle, çalışmamızın temel amacı, çözücülerin pratik yollarla tespit edilebilmesidir. Bu çalışmada, altın mikro elektrotlar kullanılarak 20 kHz – 2 MHz frekans aralığındaki çeşitli çözeltilerin kapasitans ölçümü ile tanımlamaları yapılmıştır. Ayrıca, farklı frekanslardaki çözücülerin elektriksel gürültü ve sinyal çıktıları incelenmiştir. Ölçümler, gürültüyü azaltmak ve yüksek hassasiyette algılama yapabilmek için mikro elektrotlar üzerine entegre edilen mikro kanallarla yapılmıştır.

Capacitive Solvent Sensing with Microfluidics Chip

Solvents are widely used in daily life as well as in almost all laboratories.Identification and detection of these solvents used in many areas have greatimportance in terms of health, toxicology and environment. For this reason, themain purpose of our study is to be able to identify the solvents in practical ways. Inthis study, gold microelectrodes were used to define the capacitance detection ofvarious solvents in the frequency range of 20 kHz - 2 MHz. Moreover, the electricalnoise and signal output of the solvents at different frequencies were investigated.Measurements were made by micro-channels integrated on microelectrodes forreducing noises and detection with high sensibility.

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