Concept

Magnetic tweezers

Publications associées (63)

Two-Dimensional Magnetic Droplet Manipulation Platform for Miniaturized Bioanalytical Applications

Martinus Gijs, Ulrike Lehmann, Virendra Kumar Parashar, Caroline Vandevyver

We present a new approach for the manipulation of small liquid samples for the miniaturization of bioanalytical systems. In our system, minute liquid volumes are manipulated via the interaction of a changeable magnetic field and magnetic microparticles con ...

2007

Tunable nanowire nonlinear optical probe

Aleksandra Radenovic

One crucial challenge for subwavelength optics has been the development of a tunable source of coherent laser radiation for use in the physical, information and biological sciences that is stable at room temperature and physiological conditions. Current ad ...

2007

Nanowire assembly, e.g. for optical probes, comprises optically trapping high aspect ratio semiconductor nanowire with infrared single-beam optical trap and attaching nanowire to organic or inorganic structure

Aleksandra Radenovic

NOVELTY - A nanowire assembly method comprises optically trapping a semiconductor nanowire with an infrared single-beam optical trap and attaching the nanowire to an organic or inorganic structure by laser fusing. The nanowire is further trapped in a fluid ...

2007

Refractive multiple optical tweezers for parallel biochemical analysis in micro-fluidics - art. no. 64830A

René Salathé, Horst Vogel, Fabrice Merenda, Johann Rohner, Jean-Marc Fournier

We present a multiple laser tweezers system based on refractive optics. The system produces an array of 100 optical traps thanks to a refractive microlens array, whose focal plane is imaged into the focal plane of a high-NA microscope objective. This refra ...

2007

Characterization of micro manipulation tasks operated with various controlled conditions by microtweezers

Reymond Clavel, Mélanie Dafflon

Micro manipulation tasks with micro tweezers were operated in different configurations. This paper discusses the main issues of pick and place operations with micro tweezers as geometric consideration, grasping force and quality of the contact surfaces. Th ...

2006

A micromanipulation setup for comparative tests of microgrippers

Reymond Clavel, Mélanie Dafflon

A micromanipulation setup allowing comparative tests of manipulation micro tools has been developed. Repeatability measurements of positioning as well as optimization of manipulation conditions can be run with parts of typically 5 to 50μm over a large set ...

2006

Fast immobilization of probe beads by dielectrophoresis-controlled adhesion in a versatile microfluidic platform for affinity assay

Nico de Rooij

The use of probe beads for lab-on-chip affinity assays is very interesting from a practical point of view. It is easier to handle and trap beads than molecules in microfluidic systems. We present a method for the immobilization of probe beads at defined ar ...

2005

Ab initio calculations of mode selective tunneling dynamics in (CH3OH)-C-12 and (CH3OH)-C-13

Thomas Rizzo

A simplified formulation of the harmonic reaction path Hamiltonian (RPH) approach is used to calculate mode specific tunneling splittings and stereomutation times in (CH3OH)-C-12 and (CH3OH)-C-13. The experimental torsional spectrum is very well reproduced ...

2003

Interaction potential and hopping dynamics governing sliding friction

Harald Brune

The friction force on a nanometer-sized tip sliding on a surface is related to the thermally activated hopping of the contact atoms on an effective atomic interaction potential. A general analytical expression relates the height of this potential and the h ...

2003

Direct integration of micromachined pipettes in a flow channel for single DNA molecule study by optical tweezers

Jürgen Brugger

We have developed a micromachined flow cell consisting of a flow channel integrated with micropipettes. The flow cell is used in combination with an optical trap setup (optical tweezers) to study mechanical and structural properties of -DNA molecules. The ...

2001

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