Publications de Andreas Vasdekis

Optofluidics of plants

Demetri Psaltis, Andreas Vasdekis, Jae-Woo Choi

Optofluidics is a tool for synthesizing optical systems, making use of the interaction of light with fluids. In this paper we explore optofluidic mechanisms that have evolved in plants where sunlight and fluidic control combine to define most of the functi ...

2016

Cytoplasmic Stopped Flow at the Single Cell Level Based on Photosensitive Polymersomes

Demetri Psaltis, Jeffrey Alan Hubbell, Andreas Vasdekis, Conlin O'Neil

Cell Press2014

Vesicle Photonics

Demetri Psaltis, Sylvie Roke, Jeffrey Alan Hubbell, Andreas Vasdekis

Amphiphiles, under appropriate conditions, can self-assemble into nanoscale thin membrane vessels (vesicles) that encapsulate and hence protect and transportmolecular payloads.Vesicles assemble naturally within cells but can also be artificially synthesize ...

Annual Reviews2013

Optofluidic-tunable color filters and spectroscopy based on liquid-crystal microflows

Demetri Psaltis, Andreas Vasdekis, Julien Cuennet

The integration of color filters with microfluidics has attracted substantial attention in recent years, for on-chip absorption, fluorescence, or Raman analysis. We describe such tunable filters based on the micro-flow of liquid crystals. The filter operat ...

Royal Society of Chemistry2013

Optofluidic Microstructures Containing Liquid Crystals

Andreas Vasdekis, Marilisa Romito, Luciano De Sio

We report our recent efforts on the realization and characterization of a conductive polydimethylsiloxane (PDMS) microstructure containing liquid crystals (LC). The sample has been realized by means of a layer by layer strategy. An indium tin oxide (ITO) l ...

Taylor & Francis Ltd2013

Single microbe trap and release in sub-microfluidics

Andreas Vasdekis

Life on Earth is comprised mostly of microbes with significant implications in disease and carbon cycling. However, their dimensions and mobility make microbes challenging to analyse on-chip. A sub-micron resolution microfluidic system (sub-microfluidics) ...

Royal Soc Chemistry2013

Double-helix enhanced axial localization in STED nanoscopy

Demetri Psaltis, Andreas Vasdekis, Donald Benjaman Conkey, Grégoire Pierre Jean Laporte

Stimulated Emission Depletion (STED) microscopy enables subdiffraction resolution in the imaging plane. However, STED's lateral improvement in resolution is generally better than the enhancement in the axial direction. Here, we combine conventional STED su ...

Optical Society of America2013

Electro-switchable polydimethylsiloxane-based optofluidics

Andreas Vasdekis, Marilisa Romito, Luciano De Sio

We report on the fabrication and characterization of a new generation of electro-switchable optofluidic devices based on flexible substrates, combined with the extraordinary properties of reconfigurable soft-materials. A conductive polydimethylsiloxane mic ...

Royal Soc Chemistry2012

Precision Intracellular Delivery Based on Optofluidic Polymersome Rupture

Demetri Psaltis, Jeffrey Alan Hubbell, Andreas Vasdekis, Conlin O'Neil

We present an optical approach for intracellular delivery of molecules contained within oxidation-sensitive polymersomes. The photosensitizer ethyl eosin is associated with the polymersome membrane to oxidatively increase the hydrophilicity of the hydropho ...

American Chemical Society2012

Elastomer based tunable optofluidic devices

Demetri Psaltis, Andreas Vasdekis, Wuzhou Song

The synergetic integration of photonics and microfluidics has enabled a wide range of optofluidic devices that can be tuned based on various physical mechanisms. One such tuning mechanism can be realized based on the elasticity of polydimethylsiloxane (PDM ...

Royal Society of Chemistry2012