Who are we?

NAPA TECHNOLOGIES is a start-up from NILAB, founded in 2014 by three former managers of the Crystals and Detectors business of Saint Gobain, the world leader in materials for scintillation and nuclear detection. We are based at Archamps Technopole (Haute Savoie, FRANCE) on the French-Swiss border near Geneva.
We share a 2 000 m²  plant with industrial silicon wafer manufacturer Sil’tronix Silicon Technologies.

NAPA TECHNOLOGIES developed from the start innovative surface nano-patterning technologies to improve the performance of scintillators and nuclear detectors based on an original idea from our partner CERN.

We can now deploy our technologies in particular to the field of optical detection, biological analysis and sensing.

The team includes 10 highly skilled staff, mostly qualified engineers and PhDs.

It is supported by the NILAB (Nano Imprint Laboratory), a technology platform that brings together first class academic and industrial partners. Thus, in addition to its internal resources, NAPA can call upon wide scientific and technological resources to assess your requirements and best respond to your specifications.

Selected publications

Juliano Martins, R. et al. Metasurface-enhanced light detection and ranging technology. Nat. Commun. 13, 5724 (2022)

Crespo-Monteiro, N. et al. Micro-nanostructured plasmonic TiN layer produced using rapid thermal nitridation of a nanoimprinted TiO2 sol-gel. Opt. Mater. Express 12, 3846–3855 (2022).

Gramuglia, F., Frasca, S., Ripiccini, E., Venialgo, E., Gâté, V., Kadiri, H., Descharmes, N., Turover, D., Charbon, E., Bruschini, C., Light Extraction Enhancement Techniques for Inorganic Scintillators », Crystals, vol. 11, p. 362, mars 2021.

Iltis A, Zanettini S, de Magalhaes LR, et al. Impact on timing and light extraction of a photonic crystal as measured on a half patterned LYSO crystal: Implications for time of flight PET imaging. J Instrum. 2019

Pots R, Salomoni M, Gundacker S, et al. Improving light output and coincidence time resolution of scintillating crystals using nanoimprinted photonic crystal slabs. Nucl Instrum Methods Phys Res Sect Accel Spectrometers Detect Assoc Equip. June 2019.

S. Zanettini, V. Gâté, E. Usureau, D. Turover, et al. « Improved Light Extraction Efficiency on 2 inches LYSO with Nanopatterned TiO2 Photonic Crystals ». Conférence IEEE, Strasbourg, novembre 2016

A. Knapitsch, P. Lecoq, « Review on photonic crystal coatings for scintillators”, International Journal of Modern Physics. A, volume 29, n° 30, p 1430070, novembre 2014

A. Gonzalez-Montoro, F. Sanchez, S. Majewski, S. Zanettini, J.M. Benlloch, A.J. Gonzalez, “Highly improved operation of monolithic BGP-PET blocks”, 19th International Workshop on Radiation Imaging Detectors, juillet 2017 

A. Gonzalez-Montoro, S. Majewski, S. Zanettini, F. Sanchez, A. Aguilar, J.M. Benlloch, A.J. Gonzalez, “PET detector block with DOI capabilities based on a large monolithic BGO crystal”, Conférence IEEE, Atlanta, octobre 2017 

F. Hamouda, V. Gâté, D. Turover et al, « Soft nanoimprint lithography on SiO 2 sol-gel to elaborate sensitive substrates for SERS detection », AIP Advances 7, 125125 (2017)

H. Kadiri, S. Kostcheev, D. Turover, R. Salas-Montiel, K. Nomenyo, A. Gokama, G. Lerondel, “Topology assisted self-organization of colloïdal nanoparticles : application to 2D large-scale nanomastering”, Beilstein journal of nanotechnology 2014

H. Kadiri, A. Gokarna, R. Parize, K. Nomenyo, G. Patriarche, P. Miska, G. Lerondel, “Highly crystalline urchin-like structures made of ultra-thin zinc oxide nanowires”, The Royal Society of Chemistry 2014

H. Kadiri, A. Gokarna, A. Gwiazda, A. Rumyantseva; K. Nomenyo, R. Aad, G. Lerondel, “Towards multifunctional heterostructured materials : ZnO nanowires growth on mesoscale periodically patterned Si”, Physica Status Solidi (c)

V. Gâté, D. Turover et al, « Structuring of scintillation crystals to optimize light extraction, quasi-periodic structure and corresponding use », WO2017IB56206 20171007

D. Turover, G . Lérondel et al, « Method for Optimizing the Collection of Photons in Scintillator Crystals, and Related Crystal and Uses », WO2015FR00060 20150313

D. Turover et al, « Blue to yellow emission from (Ga,In)/GaN quantum wells grown on pixelated silicon substrate » November 2020, Scientific Reports 10, 2020(10,2020)

Gramuglia, F., Frasca, S., Ripiccini, E., Venialgo, E., Gâté, V., Hind, K., Descharmes, N., Turover, D., Charbon, E., Bruschini, C., 2021. Light Extraction Enhancement Techniques for Inorganic Scintillators. Crystals 11, 362.

7, 125125 (2017)