tailieunhanh - Báo cáo hóa học: " Drying nano particles solution on an oscillating tip at an air liquid interface: what we can learn, what we can do"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Drying nano particles solution on an oscillating tip at an air liquid interface: what we can learn, what we can do | Nanoscale Res Lett 2007 2 309-318 DOI S11671-007-9065-5 NANO REVIEW Drying nano particles solution on an oscillating tip at an air liquid interface what we can learn what we can do Charlotte Bernard Jean-Pierre Aime Sophie Marsaudon Raphael Levy Anne Marie Bonnot Cattien Nguyen Denis Mariolle Francois Bertin Amal Chabli Received 23 April 2007 Accepted 19 May 2007 Published online 15 June 2007 to the authors 2007 Abstract Evaporation of fluid at micro and nanometer scale may be used to self-assemble nanometre-sized particles in suspension. Evaporating process can be used to gently control flow in micro and nanofluidics thus providing a potential mean to design a fine pattern onto a surface or to functionalize a nanoprobe tip. In this paper we present an original experimental approach to explore this open and rather virgin domain. We use an oscillating tip at an air liquid interface with a controlled dipping depth of the tip within the range of the micrometer. Also very small dipping depths of a few ten nanometers were achieved with multi walls carbon nanotubes glued at the tip apex. The liquid is an aqueous solution of functionalized nanoparticles diluted in water. Evaporation of water is the driving force determining the arrangement of nanoparticles on the tip. The results show various nanoparticles deposition patterns from which the deposits can be classified in C. Bernard . Aime El S. Marsaudon Universite Bordeaux-1 CPMOH 351 cours de la Liberation Talence cedex 33405 France e-mail R. Levy Center for Nanoscale Science Bioscience Building and Department of Chemistry University of Liverpool Liverpool l69 7zb UK Anne M. Bonnot Institut Neel CNRS BP 166 Grenoble Cedex 9 38042 France C. Nguyen ELORET Corporation NASA Ames Research Center MS 229-1 Moffett Field Mountain View CA 94035-1000 USA D. Mariolle F. Bertin A. Chabli CEA-LETI MINATEC 17 rue des Martyrs Grenoble Cedex 9 38054 France two categories. The type of deposit is .