+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Dynamic light-activated control of local chemical concentration in a fluid

, : Dynamic light-activated control of local chemical concentration in a fluid. Analytical Chemistry 81(14): 5865-5870

This article reports a method for controlling the chemical concentration in a localized region of a fluid using optoelectrofluidic mechanisms. Optoelectrofluidic fluorescence microscopy (OFM), in which an optoelectrofluidic device is integrated into a conventional fluorescence microscope, allows both modulation and detection of local chemical concentration in an easy and simple way. Here, we present the first experimental investigation of the concentration change of polysaccharides, proteins, and fluorophores, due to the frequency-dependent ac electrokinetics and electrostatic interactions in an optoelectrofluidic device. The dynamic modulation of the local concentration of biomolecules such as dextran and serum albumin was demonstrated in a temporal and spatial manner. This OFM can be a useful tool for controlling the local chemical concentration in several chemical and biological applications.


PMID: 19496599

DOI: 10.1021/ac901047v

Other references

Wegner, W., 1977: Breeding selection against causes of lameness in cattle. Milch Praxis und Rindermast: 15 (4) 10-11

Barthakur N.N., 1987: Comparisons of beta ray and electronic leaf wetness sensors in a dew chamber. The performances of a beta-ray gauge system (sensor A) and an electronic sensor (sensor B) as leaf surface wetness detectors were compared in a dew chamber. Sensor A recorded longer surface wetness durations than sensor B under identical condition...

Häussler, S., 1984: Work incapacity within the scope of rehabilitation. The concept of incapacity for work has been defined by a number of court decision. These have, also, considerably widened the originally narrow concept of disease as the cause of incapacity for work, to cover for example hospital diagnostic proced...

Mcluckey S.A.; Glish G.L.; Van Berkel G.J., 1991: Mass spectrometry mass spectrometry of multiply protonated peptides and proteins. Abstracts of Papers American Chemical Society 201(1-2): ANYL 107

Meyer, T.; Maier, M.; Höller, S.; Fein, M., 2007: Intrapancreatic accessory spleen: a differential diagnosis of pancreatic tumour. According to autoptic studies, accessory spleens may be found in 10-15% of the population and most of them are usually located at or near the splenic hilum. Only in 1-2% they are located in the pancreatic tail. We report a rare case of intrapancre...

Centerwall, W.R.; Centerwall, S.A., 1959: Phenylketonuria. Report of a survey to discover treatable siblings of institutionalized patients. Medical Arts and Sciences 13: 173-175

Rich Fredrick J., 1995: Steinkerns as pollen traps. Palynology 19: 246-247

Erlande, G., 1950: Present aspects of treatment of Bouillaud's disease. Le Progres Medical 78(20): 512-521

Ghai, G.; Francis, J.E.; Williams, M.; Dotson, R.A.; Hopkins, M.F.; Cote, D.T.; Goodman, F.R.; Zimmerman, M.B., 1987: Pharmacological characterization of CGS 15943A: a novel nonxanthine adenosine antagonist. CGS 15943A is a potent adenosine receptor antagonist with a novel nonxanthine heterocyclic ring structure. In vitro, CGS 15943A competitively inhibited the 2-chloroadenosine-induced A2 receptor-mediated relaxation of dog coronary artery strips con...

Lund-Hansen, L.C.resten; Christiansen, C.; Jensen, O.; Laima, M., 1999: The LABEREX chamber for studying the critical shear stress for fine-grained sediment. Geografisk Tidsskrift-Danish Journal of Geography 99(1): 1-7