This paper deals with the development and modeling of cylindrical contact theories and also the simulation of contact forces to be applied in the manipulation of various biological micro/nanoparticles by means of the AFM. First, the simulation of contact forces in four environments has been carried out, which are the most commonly used fluid in biomanipulation. Then, the spherical and cy...

Nanomanipulation of biomolecules by using single-molecule methods and computer simulations has made it possible to visualize the energy landscape of biomolecules and the structures that are sampled during the folding process. We use simulations and single-molecule force spectroscopy to map the complex energy landscape of GFP that is used as a marker in cell biology and biotechnology. By enginee...

• The interaction of carbon dioxide with Cu / Pt(111) • Size and Surface Chemistry effects on the Catalytic Behavior of Semiconductor Nanoclusters • Size-selected ruthenium nanoparticles on SiO 2 • NO decomposition catalysts on kinked transition metal surfaces • Oxidation of Methane on TiO 2 supported Gold Catalysts in Microreactor • Predicting Hydrogenation/Dehydrogenation Reactions from Scali...

Nanomanipulation of individual RNA molecules, using laser optical tweezers, has made it possible to infer the major features of their energy landscape. Time-dependent mechanical unfolding trajectories, measured at a constant stretching force (f(S)) of simple RNA structures (hairpins and three-helix junctions) sandwiched between RNA/DNA hybrid handles show that they unfold in a reversible all-or...

Over the last decade, electromechanical characterization of individual nanostructures, such as carbon nanotubes, piezoelectric nanowires and biological nanomaterials, has been the focus of extensive research, and nanorobotic manipulation has proven to be the most suitable approach for this [1]. However, nanomanipulation itself is a complicated process with many limitations. One of the major dif...

The Anti-Brownian ELectrophoretic trap (ABEL trap) is a new device that allows a user to trap and manipulate fluorescent objects as small as 20 nm freely diffusing in solution. We describe in detail how to build an ABEL trap. CHALLENGES IN NANOMANIPULATION One of the outstanding challenges of nanotechnology is to develop a means to trap and manipulate individual molecules in solution. To study ...

This paper presents the construction of engineered photonic defects through a combined use of chemistry-based self-assembly and SEM-based nanorobotic pick-and-place of submicron spheres. A carbon nanotube forest is used as a substrate to decrease the particle-substrate adhesion and to facilitate sphere manipulation. Finite-difference time domain simulations of the resonant response of a defect ...

Dynamic force microscopy (DFM) in combination with special-purpose probe control software is used as a manipulation tool for the precise positioning of single gold nanoparticles on a mica substrate covered with a poly-Llysine film. Experimental results are presented that show how to construct arbitrary patterns of nanoparticles. The dynamic state of the cantilever during the manipulation proces...

A series of observations of polymer sheathing in multiwalled carbon nanotube (MWCNT)−polycarbonate composites are presented. This sheathing was observed in images of the composite fracture surface and is consistent with diameter distributions of the as-received and embedded MWCNTs. A novel nanomanipulation experiment, where the sheathing balls up when contacted by an AFM tip, confirms this phen...

The creativity of human is based on a fantastic brain but also on a high grasping ability enabling to respectively imagine and build highly complex systems. Testing a concept by assembling devices together in an original configuration is absolutely common in human scale but very hard in micronanoscale because of the lack of human grasping capabilities in small scales. Our objective is to open t...