A piezoelectric quartz crystal impedance study on Cu2+-induced precipitation of bovine serum albumin in aqueous solution

2001 ◽  
Vol 47 (3) ◽  
pp. 209-219 ◽  
Author(s):  
Yan Cai ◽  
Qingji Xie ◽  
Anhong Zhou ◽  
Youyu Zhang ◽  
Shouzhuo Yao
Keyword(s):  
Aqueous Solution ◽  
Bovine Serum Albumin ◽  
Serum Albumin ◽  
Bovine Serum ◽  
Quartz Crystal ◽  
Piezoelectric Quartz ◽  
Impedance Study ◽  
Piezoelectric Quartz Crystal

scholarly journals Improvement QCM Quality By Polystyrene Coating and Bovine Serum Albumin as Immobilization Agent

2019 ◽  
Vol 8 (1) ◽  
pp. 35-41 ◽  
Author(s):  
Lalu A. Didik ◽  
Yahdi Yahdi ◽  
Masruroh Masruroh
Keyword(s):  
Thin Film ◽  
Bovine Serum Albumin ◽  
Serum Albumin ◽  
Spin Coating ◽  
Bovine Serum ◽  
Quartz Crystal ◽  
Measuring System ◽  
Frequency Shifts ◽  
Impedance Analyzer ◽  
Coating Method

Polystyrene (PS) thin film with various concentration of mass (1%, 3%, and 5%) has been deposited onto Quartz Crystal Microbalance (QCM)  surface by a spin coating method. The purpose of this research is the improvement of Bovine Serum Albumin (BSA) immobilization into the QCM surface. The QCM resonance frequency has been investigated by means of Impedance Analyzer. The film thickness was calculated by the Sauerbrey equation. The surface roughness of the PS layer was observed by noncontact Topography Measuring System (TMS-1200). Calculation result using a Sauerbrey equation shows the thickness of the PS layer increases with the increasing PS concentration. The QCM/PS with 1% and 5% concentration of mass has rougher morphology and more frequency shifts caused by BSA injection compared to 3% concentration of PS

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