Luigi Bonacina

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Publications associées (21)

Nonlinear optical and magnetic properties of BiFeO3 harmonic nanoparticles

Sandrine Gerber, Davide Städler, Jean-Pierre Wolf, Solène Marcelle Françoise Marie Passemard, Luigi Bonacina, Daniel Rytz

Second Harmonic Generation (SHG) from BiFeO3 nanocrystals is investigated for the first time to determine their potential as biomarkers for multiphoton imaging. Nanocrystals are produced by an auto-combustion method with 2-amino-2-hydroxymethyl-propane-1,3 ...

American Institute of Physics2014

Deep UV generation and direct DNA photo-interaction by harmonic nanoparticles in labelled samples

Sandrine Gerber, Davide Städler, Jean-Pierre Wolf, Solène Marcelle Françoise Marie Passemard, Luigi Bonacina, Daniel Rytz

A biophotonics approach based on the nonlinear optical process of second harmonic generation is presented and demonstrated on malignant human cell lines labelled by harmonic nanoparticles. The method enables independent imaging and therapeutic action, sele ...

Royal Society of Chemistry2014

Harmonic Nanoparticles for Regenerative Research

Jean-Pierre Wolf, Jérôme Extermann, Luigi Bonacina

In this visualized experiment, protocol details are provided for in vitro labeling of human embryonic stem cells (hESC) with second harmonic generation nanoparticles (HNPs). The latter are a new family of probes recently introduced for labeling biological ...

Journal Of Visualized Experiments2014

Tailoring single-cycle electromagnetic pulses in the 2–9 THz frequency range using DAST/SiO_2 multilayer structures pumped at Ti:sapphire wavelength

Christoph Peter Hauri, Jean-Pierre Wolf, Luigi Bonacina

We present a numerical parametric study of single-cycle electromagnetic pulse generation in a DAST/SiO2 multilayer structure via collinear optical rectification of 800 nm femtosecond laser pulses. It is shown that modifications of the thicknesses of the DA ...

Optical Society of America2014

Convenient synthesis of heterobifunctional poly(ethylene glycol) suitable for the functionalization of iron oxide nanoparticles for biomedical applications

Sandrine Gerber, Davide Städler, Solène Marcelle Françoise Marie Passemard, Phally Kong, Luigi Bonacina

A straightforward route is proposed for the multi-gram scale synthesis of heterobifunctional poly(ethylene glycol) (PEG) oligomers containing combination of triethyloxysilane extremity for surface modification of metal oxides and amino or azido active end ...

Elsevier2013

Harmonic Nanocrystals for Bio-Labeling: a Survey of Optical Properties and Biocompatibility

Sandrine Gerber, Davide Städler, Jean-Pierre Wolf, Solène Marcelle Françoise Marie Passemard, Jérôme Extermann, Luigi Bonacina, Daniel Rytz, Rachid Hadji

Nonlinear optical nanocrystals have been recently introduced as a promising alternative to fluorescent probes for multi-photon microscopy. We present for the first time a complete survey of the properties of the different nanomaterials proposed to date, de ...

American Chemical Society2012

Nonlinear Correlation Spectroscopy (NLCS)

Theo Lasser, Marcel Leutenegger, Iwan Märki, Jean-Pierre Wolf, Noelia Laura Bocchio, Luigi Bonacina, Stefan Geissbuehler

We present a novel concept for optical spectroscopy called nonlinear correlation spectroscopy (NLCS). NLCS analyses coherent field fluctuations of the second and third harmonic light generated by diffusing nanoparticles. Particles based on noncentrosymmetr ...

American Chemical Society2012

Spectral phase, amplitude, and spatial modulation from ultraviolet to infrared with a reflective MEMS pulse shaper

Nico de Rooij, Wilfried Noell, Jean-Pierre Wolf, Fabio Jutzi, Jérôme Extermann, Sébastien Lani, Luigi Bonacina

We describe the performance of a reflective pulse-shaper based on a Micro-ElectroMechanical System (MEMS) linear mirror array. It represents a substantial upgrade of a preceding release [Opt. Lett. 35, 3102 (2010)] as it allows simultaneous piston and tilt ...

Optical Society of America2011

Design, simulation, fabrication, packaging, and characterization of a MEMS-based mirror array for femtosecond pulse-shaping in phase and amplitude

Nico de Rooij, Wilfried Noell, Jean-Pierre Wolf, Fabio Jutzi, Jérôme Extermann, Sébastien Lani, Luigi Bonacina

We present an in-detail description of the design, simulation, fabrication, and packaging of a linear micromirror array specifically designed for temporal pulse shaping of ultrashort laser pulses. The innovative features of this device include a novel comb ...

American Institute of Physics2011

Time-Resolved Photodynamics of Triangular-Shaped Silver Nanoplates

Majed Chergui, Frank van Mourik, Camilla Bonati, Andrea Callegari, Luigi Bonacina

The authors measured the ultrafast response of triangular silver nanoparticles upon femtosecond excitation of their plasmon resonance. After a fast electron relaxation, the signature of a bimodal mech. vibration of the particle is apparent as a spectral mo ...

2006

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