Dr. Ahmed Al-Kattan Profile

Dr. Ahmed Al-Kattan

at Lab Lasers Plasmas et Procédés Photoniques

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Publications (7)

Proceedings Article | 19 July 2019 Paper

In-situ temperature monitoring with photoacoustics during photothermal therapy and perspectives for glioblastoma treatment monitoring

K. Metwally, C. Bastiancich, N. Dumas, F. Correard, A. Novell, F. Chaspoul, N. Jones, G. Tselikov, A. Popov, A. Al-Kattan, A. Kabashin, B. Larrat, D. Braguer, S. Mensah, M.-A. Estève, A. Da Silva

Proceedings Volume 11077, 1107709 (2019) https://doi.org/10.1117/12.2527060

KEYWORDS: Photoacoustic spectroscopy, Nanoparticles, Laser therapeutics, Temperature metrology, Pulsed laser operation

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Proceedings Article | 4 March 2019 Presentation + Paper

Femtosecond laser-ablative synthesis of plasmonic Au and TiN nanoparticles for biomedical applications

A. Popov, G. Tselikov, A. Al-Kattan, A. Kabashin

Proceedings Volume 10907, 1090708 (2019) https://doi.org/10.1117/12.2513970

KEYWORDS: Gold, Nanoparticles, Laser ablation, Femtosecond phenomena, Plasmonics, Biomedical optics, Liquids, Laser applications

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Proceedings Article | 4 March 2019 Presentation

Surface-enhanced Raman spectroscopy for beverage spoilage yeasts and bacteria detection with patterned substrates and gold nanoparticles (Conference Presentation)

Sanna Uusitalo, Martin Kögler, Alexey Popov, Yury Ryabchikov, Olga Bibikova, Hanna-Leena Alakomi, Riikka Juvonen, Ville Kontturi, Samuli Siitonen, Anna-Liisa Välimaa, Riitta Laitinen, Anton Popov, Gleb Tselikov, Ahmed Al-Kattan, Peter Neubauer, Andrei Kabashin, Igor Meglinski, Jussi Hiltunen, Arja Laitila

Proceedings Volume 10907, 1090703 (2019) https://doi.org/10.1117/12.2513956

KEYWORDS: Yeast, Nanoparticles, Surface enhanced Raman spectroscopy, Gold, Chemical analysis, Molecules, Chemometrics, Biological research, Spherical lenses, Signal detection

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In food industry, detection of spoilage yeasts such as W. anomalus and B. bruxellensis and pathogens such as certain Listeria and E. coli species can be laborious and time-consuming. In the present study, a simple and repeatable technique was developed for rapid yeast detection using a combination of patterned gold coated polymer SERS substrates and gold nanoparticles [1−4]. For the first time, a state-of-the-art time-gated Raman detection approach was used as a complementary technique to show the possibility of using 532-nm pulsed laser excitation and avoid the destructive influence of induced fluorescence [3]. Conventional nanoparticles synthesized by colloidal chemistry are typically contaminated by non-biocompatible by-products (surfactants, anions), which can have negative impacts on many live objects under examination (cells, bacteria) and thus decrease the precision of bioidentification. Here, we explore novel ultrapure laser-synthesized Au-based nanomaterials, including Au NPs and Au Si hybrid nanostructures, as mobile SERS probes in tasks of bacteria detection [3]. We demonstrate successful identification of two types of bacteria (L. innocua and E. coli) and yeast (W. anomalus and B. bruxellensis). They showed several differing characteristic peaks making the discrimination of these yeasts possible without the need for chemometric analysis [2]. The use of composite gold-silicon laser-ablated nanoparticles in combination with the SERS substrate gave distinctive spectra for all the detected species. The detection limit of the studied species varied within 104-107 CFU/ml. The obtained results open up opportunities for non-disturbing investigation of biological systems by profiting from excellent non-disturbing nature of laser-synthesized nanomaterials in combination with outstanding optical detection technologies [2, 3]. [1] Uusitalo et al. 2016, http://pubs.rsc.org/en/content/articlehtml/2016/ra/c6ra08313g [2] Uusitalo et al. 2017a, https://www.sciencedirect.com/science/article/pii/S0260877417302054 [3] Kögler et al. 2018, https://onlinelibrary.wiley.com/doi/abs/10.1002/jbio.201700225 [4] Uusitalo et al. 2017b, https://www.spiedigitallibrary.org/journalArticle/Download?fullDOI=10.1117/1.OE.56.3.037102

Proceedings Article | 23 February 2018 Presentation + Paper

Bare laser-synthesized Si nanoparticles as functional elements for chitosan nanofiber-based tissue engineering platforms

Anton Popov, Ahmed Al-Kattan, Viraj Nirwan, Emilie Munnier, Gleb Tselikov, Yury Ryabchikov, Igor Chourpa, Amir Fahmi, A. Kabashin

Proceedings Volume 10521, 105210A (2018) https://doi.org/10.1117/12.2295196

KEYWORDS: Silicon, Nanoparticles, Nanofibers, Polymers, Tissue engineering, Laser ablation, Transmission electron microscopy, Raman spectroscopy

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Proceedings Article | 22 February 2017 Paper

Influence of oxidation state on water solubility of Si nanoparticles prepared by laser ablation in water

Yu. Ryabchikov, A. Al-Kattan, V. Chirvony, J. Sanchez-Royo, M. Sentis, V. Yu. Timoshenko, A. Kabashin

Proceedings Volume 10078, 100780C (2017) https://doi.org/10.1117/12.2257404

KEYWORDS: Nanomaterials, Silicon, Nanoparticles, Laser therapeutics, Cancer, Laser ablation, Toxicity, Biomedical optics, Oxidation, Oxides, Transmission electron microscopy, Oxygen, Argon, Femtosecond phenomena

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Proceedings Article | 9 March 2016 Paper

Si nanoparticles as sensitizers for radio frequency-induced cancer hyperthermia

A. Kabashin, K. Tamarov, Yu. Ryabchikov, L. Osminkina, S. Zinovyev, J. Kargina, M. Gongalsky, A. Al-Kattan, V. Yakunin, M. Sentis, A. Ivanov, V. Nikiforov, A. Kanavin, I. Zavestovskaya, V. Timoshenko

Proceedings Volume 9737, 97370A (2016) https://doi.org/10.1117/12.2222814

KEYWORDS: Raman spectroscopy, Silicon, Nanoparticles, Cancer, Laser ablation, Tumors, Blood, Gold, Plasma

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Proceedings Article | 9 March 2016 Paper

Laser ablative nanostructuring of Au in liquid ambience in continuous wave illumination regime

A. Kucherik, S. Kutrovskaya, S. Arakelyan, Y. Ryabchikov, A. Al-Kattan, A. Kabashin, T. Itina

Proceedings Volume 9737, 973709 (2016) https://doi.org/10.1117/12.2217436

KEYWORDS: Gold, Nanoparticles, Continuous wave operation, Laser ablation, Laser systems engineering, Femtosecond phenomena, Laser applications, Optical properties, Catalysis, Nanoelectronics, Liquids, Metals, Nanostructuring, Fiber lasers, Laser processing, Particles

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Showing 5 of 7 publications

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