Instytut Podstawowych Problemów Techniki
Polskiej Akademii Nauk

Pracownicy

mgr inż. Agata Kaczmarek

Zakład Mechaniki Doświadczalnej (ZMD)
Pracownia Technologicznych Zastosowań Laserów (PTZL)
stanowisko: specjalista
doktorantka
telefon: (+48) 22 826 12 81 wewn.: 236
pokój: 034
e-mail:
ORCID: 0000-0002-5295-6069

Ostatnie publikacje
1.  Kaczmarek A., Denis P., Krajewski M., Mościcki T., Małolepszy A., Hoffman J., Improved laser ablation method for the production of luminescent carbon particles in liquids, Materials, ISSN: 1996-1944, DOI: 10.3390/ma14092365, Vol.14, No.9, pp.2365-1-17, 2021

Streszczenie:
An improved method for the production of luminescent carbon nanoparticles is proposed in this work. The new method overcomes the disadvantages of commonly used approaches. It involves two-stage laser ablation in water and in aqueous solutions, where the first stage is the laser ablation of a graphite target and the second is the shredding of particles produced in the first step. The two-stage method offers the optimization of the laser pulse fluence for the performance of each process. It was found that the two-stage process of laser ablation allows producing photoluminescent carbon structures in pure water. The additional reagent may be added either in the first or second stage. The first stage performed in pure water allows avoiding the contamination of the target. Moreover, it simplifies the identification of the origin of photoluminescence. Two synthesis routes for the preparation of carbon nanoparticles by the proposed method using pure water as well as urea aqueous solution are investigated. It was found that the use of urea as a reagent results in luminescence properties similar to those obtained with other more hazardous amine-based reagents. The influence of the synthesis approach and process parameters on the structural and luminescent properties of nanoparticles is also explored in this work.

Słowa kluczowe:
pulsed laser ablation in liquid, carbon nanoparticles, photoluminescent particles

Afiliacje autorów:
Kaczmarek A. - IPPT PAN
Denis P. - IPPT PAN
Krajewski M. - IPPT PAN
Mościcki T. - IPPT PAN
Małolepszy A. - Warsaw University of Technology (PL)
Hoffman J. - IPPT PAN
140p.
2.  Kaczmarek A., Hoffman J., Morgiel J., Mościcki T., Stobiński L., Szymański Z., Małolepszy A., Luminescent carbon dots synthesized by the laser ablation of graphite in polyethylenimine and ethylenediamine, Materials, ISSN: 1996-1944, DOI: 10.3390/ma14040729, Vol.14, No.4, pp.729-1-13, 2021

Streszczenie:
Fluorescent carbon dots (CDs) synthesized by pulsed laser ablation in liquid (PLAL) are still interesting materials due to their possible applications. However, unlike CDs produced by the hydrothermal method, CDs produced the synthesis products by the PLAL method were never separated by dialysis, which differentiates the synthesis products and allows the identification of the main source of fluorescence. In this work, the synthesis of fluorescent carbon dots (CDs) was performed by nanosecond laser ablation of a graphite target immersed in polyethyleneimine (PEI) and ethylenediamine (EDA), and the synthesis products were separated by dialysis. The results of optical measurements showed that the main source of luminescence of the obtained nanostructures are fluorescent particles or quasi-molecular fluorophores created in the ablation process. In the case of ablation in PEI, most of the produced molecular fluorophores are associated with carbogenic nanostructures, while in the case of EDA, free fluorescent molecules dominate.

Słowa kluczowe:
carbon dots, photoluminescence, laser ablation

Afiliacje autorów:
Kaczmarek A. - IPPT PAN
Hoffman J. - IPPT PAN
Morgiel J. - Institute of Metallurgy and Materials Science, Polish Academy of Sciences (PL)
Mościcki T. - IPPT PAN
Stobiński L. - Warsaw University of Technology (PL)
Szymański Z. - IPPT PAN
Małolepszy A. - Warsaw University of Technology (PL)
140p.

Abstrakty konferencyjne
1.  Kaczmarek A., Hoffman J., Denis P., Mościcki T., Photoluminescence of carbon nanoparticles synthesized by laser ablation in water and aqueous solutions of amine-based reagents, 2nd Advanced Materials Science World Congress 2021, 2021-06-14/06-15, Berlin (DE), pp.60, 2021
2.  Kaczmarek A., Hoffman J., Okołowicz A., Małolepszy A., Photoluminescence properties of carbon nanoparticles synthesized by laser ablation in water and aqueous solutions of amine-based reagents, EYEC-9, European Young Engineers Conference, 2021-04-19/04-21, Warszawa (PL), pp.12.7-172, 2021

Słowa kluczowe:
pulsed laser ablation in liquids, carbon nanoparticles, optical properties

Afiliacje autorów:
Kaczmarek A. - IPPT PAN
Hoffman J. - IPPT PAN
Okołowicz A. - Warsaw University of Technology (PL)
Małolepszy A. - Warsaw University of Technology (PL)
3.  Kaczmarek A., Małolepszy A., Hoffman J., Chrzanowska-Giżyńska J., Błoński S., Szymański Z., Mościcki T., Functionalization of carbon nanodots in liquids using laser ablation method, CNM 2019, 6th CONFERENCE ON NANO- AND MICROMECHANICS, 2019-07-03/07-05, Rzeszów (PL), pp.1-3, 2019

Słowa kluczowe:
carbon nanoparticles, C-dots, laser ablation in liquid, photoluminescence

Afiliacje autorów:
Kaczmarek A. - IPPT PAN
Małolepszy A. - Warsaw University of Technology (PL)
Hoffman J. - IPPT PAN
Chrzanowska-Giżyńska J. - IPPT PAN
Błoński S. - IPPT PAN
Szymański Z. - IPPT PAN
Mościcki T. - IPPT PAN

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