53 citations · 96 across the 6 of their papers we have counts for
6 papers
On the use of organic semiconductors as handles for optical tweezers experiments: trapping and manipulating polyaniline (PANI) microparticles
Kairon M. Oliveira, Tiago A. Moura, Janaisa L. C. Lucas +3
Here we propose the use of the organic semiconductor polyaniline (PANI) for the preparation of spherical-shaped microparticles to serve as handles in optical tweezers (OT) experime…
Germanium microparticles as optically induced oscillators in optical tweezers
W. H. Campos, T. A. Moura, O. J. B. J. Marques +4
Oscillatory dynamics is a key tool in optical tweezers applications. It is usually implemented by mechanical interventions that cannot be optically controlled. In this work we show…
How light absorption modifies the radiative force on a microparticle in optical tweezers
W. H. Campos, J. M. Fonseca, J. B. S. Mendes +2
Reflection and refraction of light can be used to trap small dielectric particles in the geometrical optics regime. Absorption of light is usually neglected in theoretical calculat…
Topology of DNA: a honeycomb stable structure under salt effect
Elsa de la Calleja, R. F Bazoni, M. S. Rocha +1
Atomic Force Microscopy analysis is employed to study the geometrical and topological properties of kbp DNA molecules fixed in mica substrates with . We found that…
Extracting physical chemistry from mechanics: a new approach to investigate DNA interactions with drugs and proteins in single molecule experiments
M. S. Rocha
In this review we focus on the idea of establishing connections between the mechanical properties of DNAligand complexes and the physical chemistry of DNA-ligand interactions. This…
Transition on the entropic elasticity of DNA induced by intercalating molecules
M. S. Rocha, M. C. Ferreira, O. N. Mesquita
We use optical tweezers to perform stretching experiments on DNA molecules when interacting with the drugs daunomycin and ethidium bromide, which intercalate the DNA molecule. Thes…