Publications de Jean-Pierre Wolf

Laser-guided lightning

Farhad Rachidi-Haeri, Marcos Rubinstein, Jean-Pierre Wolf, Pierre Walch, Clemens Herkommer, Amirhossein Mostajabi, Thomas Produit, Antonio Sunjerga, Victor Moreno

Lightning discharges between charged clouds and the Earth’s surface are responsible for considerable damages and casualties. It is therefore important to develop better protection methods in addition to the traditional Franklin rod. Here we present the fir ...

Nature Publishing Group2023

The Laser Lightning Rod Project

Marcos Rubinstein, Jean-Pierre Wolf, Pierre Walch, Mohammad Azadifar, Amirhossein Mostajabi, Thomas Produit, Antonio Sunjerga, Victor Moreno

2022

The laser lightning rod project

Farhad Rachidi-Haeri, Marcos Rubinstein, Jean-Pierre Wolf, Pierre Walch, Mohammad Azadifar, Clemens Herkommer, Amirhossein Mostajabi, Thomas Produit, Antonio Sunjerga

Lightning is highly destructive due to its high power density and unpredictable character. Directing lightning away would allow to protect sensitive sites from its direct and indirect impacts (electromagnetic perturbations). Up to now, lasers have been una ...

2021

Laser lightning rod and artificial fog dissipation

Farhad Rachidi-Haeri, Marcos Rubinstein, Jean-Pierre Wolf, Pierre Walch, Mohammad Azadifar, Clemens Herkommer, Amirhossein Mostajabi, Thomas Produit, Antonio Sunjerga, Victor Moreno

IEEE2021

Photocontrolled release of the anticancer drug chlorambucil with caged harmonic nanoparticles

Jean-Pierre Wolf, Sandrine Gerber, Luigi Bonacina, Raphaël Jovita De Matos, Jérémy Vuilleumier

While chemotherapy is one of the most used treatments in oncology, the systemic administration of chemotherapeutics generally results in undesired damages to healthy tissues and cells, side effects such as severe nausea and leukopenia, and reduced efficacy ...

Wiley-VHCA AG2020

Charge separation and carrier dynamics in donor-acceptor heterojunction photovoltaic systems

Jacques-Edouard Moser, Majed Chergui, Joël Teuscher, Jean-Pierre Wolf, Ursula Röthlisberger, Jan Cornelius Brauer, Alicia Solano, Natalie Renuka Banerji, Ariadni Boziki

Electron transfer and subsequent charge separation across donor-acceptor heterojunctions remain the most important areas of study in the field of third-generation photovoltaics. In this context, it is particularly important to unravel the dynamics of indiv ...

2017

Implications of short time scale dynamics on long time processes

Majed Chergui, Jean-Pierre Wolf, Ursula Röthlisberger, Luigi Bonacina, Cédric Schmidt, Siri Camee van Keulen, Swarnendu Bhattacharyya

2017

Cellular uptake and biocompatibility of bismuth ferrite harmonic advanced nanoparticles

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

Bismuth Ferrite (BFO) nanoparticles (BFO-NP) display interesting optical (nonlinear response) and magnetic properties which make them amenable for bio-oriented diagnostic applications as intra- and extra membrane contrast agents. Due to the relatively rece ...

Elsevier2015

Simultaneous Multi-Harmonic Imaging of Nanoparticles in Tissues for Increased Selectivity

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

We investigate the use of Bismuth Ferrite (BFO) nanoparticles for tumor tissue labelling in combination with infrared multi-photon excitation at 1250 nm. We report the efficient and simultaneous generation of second and third harmonic by the nanoparticles. ...

Amer Chemical Soc2015

Nonlinear optical and magnetic properties of BiFeO3 harmonic nanoparticles

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

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

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

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, Luigi Bonacina, Jérôme Extermann

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

Jean-Pierre Wolf, Luigi Bonacina, Christoph Peter Hauri

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

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

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

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)

Iwan Märki, Marcel Leutenegger, Theo Lasser, Jean-Pierre Wolf, Luigi Bonacina, Noelia Laura Bocchio, 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, Jean-Pierre Wolf, Fabio Jutzi, Wilfried Noell, Luigi Bonacina, Sébastien Lani, Jérôme Extermann

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

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

Applications de la spectroscopie laser à la pollution atmosphérique

Jean-Pierre Wolf

EPFL1987