Ana Maria Crăciun


Research Interests

  • Synthesis of multifunctional polymer-coated gold nano-objects with attractive optical properties, for various application such as biosensing, bioimaging and therapeutic assays.
  • Investigation of intrinsic multi-photon photoluminescence of gold nanoparticles for the development of efficient label-free bioimaging and immunodetection applications
  • Implementation of new analysis and spectroscopic imaging methods through exploiting the performances of MicroTime200 confocal microscopy system coupled with femto-second Titanium:Sapphire laser


  • Synthesis of multifunctional colloidal gold nanoparticles and nanoclusters
  • Steady-state and time-resolved fluorescence spectroscopy and microscopy
  • Fluorescence-based detection assays
  • Non-linear optics
  • Spectroscopic techniques (absorption, DLS, zeta potential)
  • FDTD-based numerical simulations 

International visibility

  • Co-author of 61 ISI papers (16 as a main author/corresponding author), 1 book chapter (Elsevier) and 1 pending national patent ( OSIM code RO 135233 A0 (51), 2021)
  • 1828 (Scholar) / 1479 (WoS) citations
  • Hirsh index: 23 (Scholar) / 22 (WoS)
  • 5 national projects/grants/scholarships (total amount ~260.000 euro) as project leader, key member in over 16 other national and international research projects
  • Scientific Excellence Diploma from Babeș-Bolyai University in 2017
  • Special Mention award and Excellence Diploma in the national contest “The Rada Mihalcea Awards for Young Researchers in Science and Engineering”, 6th edition, Cluj-Napoca, 2020

Web of Science ResearcherID: C-6735-2012  >

ORCID iD: 0000-0002-6561-0972  > 

BrainMap ID: U-1700-039X-3567  >

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Most Relevant Publications

Glutathione-capped gold nanoclusters as near-infrared-emitting efficient contrast agents for confocal fluorescence imaging of tissue-mimicking phantoms, A.-M. Hada, A.-M. Craciun, M. Focsan, A. Vulpoi, E.-L. Borcan, S. Astilean, Microchimica Acta, 189 (2022) 337

Photoluminescent Histidine-Stabilized Gold Nanoclusters as Efficient Sensors for Fast and Easy Visual Detection of Fe Ions in Water Using Paper-Based Portable Platform, A.-M. Hada, M. Zetes, M. Focsan, S. Astilean, A.-M. Craciun, Int. J. Mol. Sci., 23 (2022) 12410

One-photon excited photoluminescence of gold nanospheres and its application in prostate specific antigen detection via fluorescence correlation spectroscopy (FCS), A-M Craciun, S. Suarasan, M. Focsan, S. Astilean, Talanta, 228 (2021) 122242

Folic acid functionalized gold nanoclusters for enabling targeted fluorescence imaging of human ovarian cancer cells, A.-M. Hada, A.-M. Craciun, M. Focsan, R. Borlan, O. Soritau, M. Todea, S. Astilean, Talanta, 225 (2021) 121960

Probing cellular uptake and tracking of differently shaped gelatin-coated gold nanoparticles inside of ovarian cancer cells by two-photon excited photoluminescence analyzed by fluorescence lifetime imaging (FLIM) , S. Suarasan, E. Licarete, S. Astilean, A. M. Craciun, Colloid Surf. B, 166 (2018) 135 - 143

Enhanced one- and two-photon excited fluorescence of cationic (phenothiazinyl)vinyl-pyridinium chromophore attached to polyelectrolyte-coated gold nanorods , A. M. Craciun, M. Focsan, L. Gaina, S. Astilean, Dyes Pigm., 136 (2017) 24 - 30

Hybrid plasmonic platforms based on silica-encapsulated gold nanorods as effective spectroscopic enhancers for Raman and fluorescence spectroscopy , A. M. Gabudean, D. Biro, S. Astilean, Nanotechnology, 23 (2012) 4857061

Gold Nanorods Performing as Dual-Modal Nanoprobes via Metal- Enhanced Fluorescence (MEF) and Surface-Enhanced Raman Scattering (SERS) , A. M. Gabudean, M. Focsan, S. Astilean, J. Phys. Chem. C, 116 (2012) 12240 - 12249