Probing local water contents of in vitro protein films by ultrasonic force microscopy -: art. no. 123901

被引：15
|
作者：
Szoszkiewicz, R
Kulik, AJ
Gremaud, G
Lekka, M
机构：
[1] Ecole Polytech Fed Lausanne, Inst Phys Complex Matter, CH-1015 Lausanne, Switzerland
[2] Polish Acad Sci, Henryk Niewodniczanski Inst Nucl Phys, PL-31342 Krakow, Poland
来源：
APPLIED PHYSICS LETTERS | 2005年 / 86卷 / 12期
关键词：
D O I：
10.1063/1.1891283
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
By means of ultrasonic force microscopy and lateral force microscopy we measure adhesion hysteresis and friction on protein films of bovine serum albumin and concanavalin A at local scales. Our investigations at different relative humidities (less than 5% and at 50% relative humidity) correspond to dehydrated and hydrated states of proteins. We demonstrate that a substantial increase of adhesion hysteresis with relative humidity is sensitive measure of protein-water binding capacity at local scales. (C) 2005 American Institute of Physics.
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页码：1 / 3
页数：3
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