1. Repulsive Force for Micro- and Nano-Non-Contact Manipulation
- Author
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Amélie Cot, Patrick Rougeot, Sophie Lakard, Michaël Gauthier, Jérôme Dejeu, Franche-Comté Électronique Mécanique, Thermique et Optique - Sciences et Technologies (UMR 6174) (FEMTO-ST), Université de Technologie de Belfort-Montbeliard (UTBM)-Ecole Nationale Supérieure de Mécanique et des Microtechniques (ENSMM)-Centre National de la Recherche Scientifique (CNRS)-Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC), Univers, Transport, Interfaces, Nanostructures, Atmosphère et environnement, Molécules (UMR 6213) (UTINAM), Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Franche-Comté (UFC), Département de Chimie Moléculaire - Ingéniérie et Intéractions BioMoléculaires (DCM - I2BM), Département de Chimie Moléculaire (DCM), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Franche-Comté Region under FIMICAP (contract '2011C-07333'), ANR-17-EURE-0002,EIPHI,Ingénierie et Innovation par les sciences physiques, les savoir-faire technologiques et l'interdisciplinarité(2017), and European Project: 260079,EC:FP7:NMP,FP7-2010-NMP-ICT-FoF,FAB2ASM(2010)
- Subjects
Fluid Flow and Transfer Processes ,Process Chemistry and Technology ,General Engineering ,PANI electropolymerization ,APTES grafting ,Computer Science Applications ,[SPI.AUTO]Engineering Sciences [physics]/Automatic ,[CHIM.THEO]Chemical Sciences/Theoretical and/or physical chemistry ,[CHIM.POLY]Chemical Sciences/Polymers ,exclusion zone (EZ) ,General Materials Science ,force modeling ,repulsive force ,[SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics ,non-contact-manipulation ,surface functionalization ,Instrumentation - Abstract
International audience; Non-contact positioning of micro-objects using electric fields has been widely explored, based on several physical principles such as electrophoresis, dielectrophoresis (DEP) or optical dielectrophoresis (ODEP), in which the actuation force is induced by an electric charge or an electric dipole placed in an electric field. In this paper, we introduce a new way to control charges in non-contact positioning of micro-objects using chemical functionalization (3-aminopropyl) triethoxysilane-APTES) able to localize charges on a substrate and/or on a micro-object. We demonstrate that this functionalization in a liquid with a low ionic strength is able to concentrate a significant amount of electric charges on surfaces generating an electric field over a long distance (about 10 microns), also called a large exclusion zone (EZ). A model is proposed and validated with electrostatic force measurements between substrate and microparticles (diameter up to 40 µm). We demonstrate that the magnitude of the force and the force range decrease rapidly when the ionic strength of the medium increases. Based on the proposed model, we show that this new way to localize charges on micro-objects may be used for non-contact positioning.
- Published
- 2023
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