Memorias de investigación
Research Publications in journals:
Electrophoretic Versus Dielectrophoretic Nanoparticle Patterning Using Optoelectronic Tweezers
Year:2017
Research Areas
  • Physics chemical and mathematical,
  • Engineering
Information
Abstract
Currently, there is increasing interest from many scientific disciplines in the development of systems that are able to sort and arrange many objects in parallel at the nano- and micrometric scale. Among others, photovoltaic tweezers (PVT) are an optoelectronic technique for trapping and patterning nano- and micro-objects in accordance with an arbitrary light profile. In this work, the differential features of electro- and dielectrophoretic (EP and DEP) nanoparticle (NP) patterning using PVT are deeply investigated. The study is carried out through theory and experiments. The developed theory extends the applicability of a previously reported model to be able to compute EP potentials and to obtain numerical values for the EP and DEP potential energies. Two-dimensional patterns of charged and neutral aluminum NPs are fabricated on top of Fe?LiNbO3 crystals, and different light distributions and other experimental parameters (crystal thickness and NP concentration) are compared. Patterns of charged and neutral NPs show remarkable differences in both particle density distribution and fidelity to the original light profile. The observed different features between EP and DEP trapping are satisfactorily explained by the theoretical analysis. The results provide routes for the optimization of the NP arrangements for both regimes.
International
Si
JCR
Si
Title
Physical Review Applied
ISBN
2331-7019
Impact factor JCR
4,061
Impact info
Volume
7
10.1103/PhysRevApplied.7.064027
Journal number
From page
064027
To page
064027-9
Month
SIN MES
Ranking
Q1
Participants
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: MECANO: Investigación didáctica en la Ingeniería Mecánica
  • Departamento: Mecánica de Fluidos y Propulsión Aeroespacial