skip to primary navigationskip to content
 

Tijmen G. Euser

Optical manipulation in optofluidic waveguides

Optofluidic hollow-core photonic crystal fibres (HC-PCF) enable low-loss propagation of light at the centre of a microfluidic channel. The resulting well-defined optical forces can be used to trap and propel microparticles [1] and biological cells [2] over long distances. The particle dynamics can be monitored using in-fibre Doppler velocimetry [3], offering a unique way to study viscous- and thermal forces in optofluidic channels. For example: particle propulsion experiments in air-filled HC-PCF [4] unveiled an unexpected optothermal trapping mechanism [5], which has potential applications in lab-on-a-chip devices.

Furthermore, a coherent superposition of co-propagating higher-order waveguide modes can create a mode-based "optical conveyor belt" that combines long-range transport with a positional accuracy of about 1 μm [5].  This work led to the development of a "flying particle" sensor that maps the electric field strength along a HC-PCF by measuring the transverse displacement of an optically propelled charged microparticle [6]. This new type of fibre-optic sensor allows the electric field to be mapped with very high positional accuracy over long distances and is suitable for otherwise inaccessible or harsh environments.

References

[1] T. G. Euser et al., Opt. Lett. 34, 3674 (2009).
[2] S. Unterkofler et al., J. Biophotonics 6, 743–752 (2013).
[3] M. K. Garbos et al., Opt. Lett. 36, 2020 (2011).
[4] O. A. Schmidt et al., Phys. Rev. Lett. 109, 024502 (2012).
[5] O. A. Schmidt et al., Opt. Express 21, 29383-29391 (2013).
[6] D. S. Bykov et al., Nature Phot. 9, 461–465 (2015).

 

 

Tijmen G. Euser

Cavendish Laboratory
Department of Physics

University of Cambridge

In 2007, Tijmen Euser completed his PhD research on "Ultrafast optical switching of photonic crystals” in the group of Prof. Willem Vos at the University of Twente and the FOM Institute for Atomic and Molecular Physics (AMOLF) in the Netherlands. Subsequently, he was a postdoctoral fellow with Prof. Philip Russell at the Max Planck Institute for the Science of Light (MPL) in Erlangen, Germany. Over the past years, his MPL team has demonstrated a range of applications of hollow-core photonic crystal fibre (HC-PCF), such as: flying-particle sensors based on microparticles that are optically guided along a HC-PCF, controlled excitation of higher-order fibre-modes, and photochemistry on sub-µl volumes in PCF. In August 2015, Tijmen was appointed to a Lectureship at the Cavendish Laboratory, where his Optofluidics lab in the Maxwell Centre for the physical sciences investigates optical manipulation of nanoparticles and biomolecules as well as photocatalysis in optofluidic waveguides.

Upcoming events

Cambridge Bioinformatics Hackathon

Sep 25, 2017

Craik-Marshall Building, Downing Site, Cambridge CB2 3AR

Upcoming events

RSS Feed News

Sensor CDT away day

Jun 27, 2017

Students from all three Sensor CDT cohorts traveled to Marston Vale to meet up with the MAS CDT for a joint away day aiming to solve research problems together.

Biomaker Challenge

Jun 07, 2017

A four-month challenge to build low-cost sensors and instruments for biology

Sensor Team Challenge 2017 has started

May 14, 2017

By combining their scientific and managerial skills, the third cohort of Sensor CDT students will develop low-cost and open-source cell-free molecular diagnostics for biological and chemical sensor applications.

Winner of CDT Twitter photo competition

May 08, 2017

Second prize in the #CDTinnovation category goes to Oliver Vanderpoorten

View all news