发明名称 |
FLOW-THROUGH SHEAR ANALYZER FOR BIOLOGICALLY ACTIVE MOLECULES IN LIQUID LAYERS ON SURFACES, METHOD OF ANALYSING A LIQUID AND METHOD OF DETERMINING THE THICKNESS OF AN ULTRA THICK LIQUID LAYER |
摘要 |
<p>The adsorption rate of proteins from solutions on surfaces in the region of interface layers is often so large that a depletion of the protein in the interface layer results. Due to this, the total reaction becomes transport-dependent, sensitively disrupting the determination of the rate constants. In known TIRF-analysis chambers or bio-sensor systems with a liquid interface layer of ~10 mum thickness and mass transport coefficients of 10<-6>-10<-5 >m/s it has up limitation.With the help of a TIRF-flow-through shear analyzer in which a certain volume unit of an immiscible fluid, for example an air bubble, is fed into the buffer flow, an ultra-thin liquid layer arises on the surface with a thickness of 100-200 nm, wherein interface surfaces below 10 nm thickness are technically possible.The new TIRF-flow-through shear analyzer therefore allows the generation of ultra-thin liquid layers while increasing the mass transport coefficients for proteins by 50-100-fold so that the sorption rate constants can be determined without transport limitation.</p> |
申请公布号 |
EP1082601(B1) |
申请公布日期 |
2005.08.10 |
申请号 |
EP19990936304 |
申请日期 |
1999.05.25 |
申请人 |
JENNISSEN, HERBERT P. |
发明人 |
JENNISSEN, HERBERT, PETER;ZUMBRINK, THOMAS |
分类号 |
G01N21/64;G01N1/34;G01N13/00;G01N21/03;G01N21/05;G01N21/27;G01N21/55;(IPC1-7):G01N21/55;G01N21/43 |
主分类号 |
G01N21/64 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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