Expertise - Nanoropt

- Solubilisation, chirality separation and exo- and endohedral functionalisation of carbon nanotubes - Optical Spectroscopy (wavelength-dependent resonant Raman scattering spectroscopy, wavelength-dependent IR fluorescence-excitation spectroscopy, time-resolved absorption and fluorescence spectroscopy) - Hyperspectral fluorescence imaging -Electron Paramagnetic Resonance Spectroscopy - Optically-detected magnetic resonance spectroscopy

Technique

- Optical Spectroscopy (wavelength-dependent resonant Raman scattering spectroscopy and wavelength-dependent nIR fluorescence-excitation spectroscopy) -Electron Paramagnetic Resonance Spectroscopy - Density gradient ultracentrifugation - aqueous two-phase separation techniques

Users

- Academic Researchers - research institutes - Companies

Keywords

Electron paramagnetic resonance (epr), Optical spectroscopy, Ultracentrifugation, Carbon nanotubes

Linear and nonlinear optical characterization; ultrafast laser science; pump-probe systems; nonlinear optics

Technique

Z-scan; EZ-scan; OKE spectroscopy; UV-VIS spectroscopy; aborption spectroscopy; hyper Rayleigh scattering

Users

Materials, ultrafast characterization, nonlinear characterization

Keywords

Non-linear optics

My research is focused on single-wall carbon nanotubes (SWCNT) from synthesis (design of catalysts, chemical vapor deposition (CVD)) to characterization (Optical spectroscopy: Raman, photoluminescence, Infrared and UV-VIS) and electron microscopy (scanning and transmission electron microscopy).

Technique

Synthesis : - Organic and inorganic synthesis - Chemical Vapor deposition synthesis Characterization : Optical Spectroscopy ( Raman, photoluminescence, IR and UV-VIS) X-ray diffraction (XRD) Electron spectroscopy (XPS) Electron microscopy ( SEM and TEM) Atomic force microscopy

Users

Researchers

Keywords

Chemistry, Nanotubes, Physics

- Characterisation of paramagnetic inorganic and organic compounds - Characterisation of paramagnetic impurities and defects in solids. - Optical characterisation (absorption, fluorescence, raman spectroscopy) of liquids and solids. - Optical investigations of ultrafast dynamics in materials - Determination of nonlinear optical (NLO) properties of molecules in solution.

Technique

- Continuous-wave/pulsed electron paramagnetic resonance (EPR) at 9.5 and 95 GHz - Resonance raman spectroscopy - Fluorescence spectroscopy - Absorption spectroscopy - Picosecond laser spectroscopy - Hyper-Rayleigh scattering (HRS)

Users

- Other research laboraories (universities and research centers) - R&D semiconductor industry and related companies - R&D chemical industry

Keywords

Electron paramagnetic resonance (epr), Non-linear optics, Laser spectroscopy, Resonance raman spectroscopy

Optical spectroscopy of carbon nanotubes; Optical characterization of nanomaterials; Electron diffraction characterization of carbon nanotubes; Sorting of carbon nanotubes;

Technique

Raman spectroscopy; photoluminescence excitation spectroscopy; absorption spectroscopy; electron diffraction; density-gradient ultracentrifugation; aqueous two-phase separation

Users

Researchers

Keywords

Experimental study, Nano optics

* Solubilization, molecular filling, and chirality sorting of carbon nanotubes (CNTs) * Spectroscopic characterization of carbon nanotubes and their nanohybrids * Design of (non-linear) optical molecules and nanomaterials * Non-linear optical characterization of organic molecules and nanomaterials

Technique

* Wavelength-dependent determination of the molecular non-linear optical response (hyperpolarizability) by hyper-Rayleigh scattering with tunable laser wavelength (using a picosecond chirped pulse laser amplifier with optical parametric amplifier, tunable from <300nm to >3000nm) * High resolution resonant Raman spectroscopy with tunable laser wavelength (374-1100nm ; using triple spectrometers with ion lasers, dye lasers, Titanium:sapphire lasers and external cavity frequency doubler) * 2D infrared fluorescence-excitation spectroscopy (with a dedicated, in-house developed, ultra-sensitive setup with liquid nitrogen cooled deep-depletion Si CCD and [extended] InGaAs array detectors sensitive up to 2200nm) * Infrared fluorescence microscopy with hyperspectral imaging * Various chemical preparation equipment (fume hoods, analytical balances, glove boxes for working under inert atmosphere, spin coater, vacuum ovens up to 1100°C, centrifuges [low speed to ultra-speed], etc.) * Cryogenic spectroscopy (down to liquid helium temperature) * Density gradient ultracentrifugation (up to >1000 000g) and aqueous two-phase separation of nanomaterials * Optical absorption spectroscopy (175-3300nm) and fluorescence spectroscopy * Time resolved fluorescence spectroscopy (streak camera) and pump-probe spectroscopy * Quantum-chemical calculations (semi-empirical, DFT) and molecular dynamics simulations

Users

Other collaborating academic researchers or companies.

Keywords

Non-linear optical materials, Organic materials, Nanomaterials, Two-dimensional materials, Laser spectroscopy, Carbon nanotubes