(89) “Machine learning for protected metal nanoclusters: Structure, dynamics, chemistry”,    IMRC 2023 Cancun, Mexico, 8/2023


(88)  “Criteria for hydrogen evolution activity on ligand-protected Au25-based nanoclusters”,  IMRC 2023 Cancun, Mexico, 8/2023



(87)  “DNA-stabilized silver nanoclusters: Structure, optical and chiral properties”,   IMRC 2023 Cancun, Mexico, 8/2023




(86) “Machine learning for protected metal nanoclusters, structure, dynamics, chemistry “, 62th Sanibel Symposium, 2/2023, St Augustine Beach, FL, USA



(85) “Monolayer-protected metal clusters as atomically precise, tunable nano materials”, ACCMS-GRC Webinar 8/2022..


(84) “Machine learning for hybrid metal nanoparticles”, IMRC 2022 Cancun, Mexico, 8/2022.


(83) “Prospects and challenges for computer simulations of monolayer-protected metal clusters and their aggregates”, invited lecture in the C2MCI kickoff

event, Kingston, Canada, 5/2022.


(82) “Prospects and challenges for computer simulations of monolayer-protected metal clusters and their aggregates”, invited lecture in a global webinar on: Aggregate Science in Metal Materials: from Clusters, to Crystals and Supracrystals, 11/2021. 


(81) “Targeted intracellular pH imaging by atomically precise, functionalized gold nanoclusters”, XXIX International Materials Congress  (IMRC) 2021, Cancun, Mexico, 8/2021.


(80) "Distance-Based Machine Learning for Hybrid Nanoparticles: Is it any good?", GRC on Atomically precise nanochemistry, Galveston, USA 2020. 


(79) "The science of atom-precise ligand-stabilized metal nanoclusters", ISCAN, Richmod, VA, USA 2019. 


(78) "Monodispersed ligated gold clusters in aqueous phase: Fundamentals and potential applications", CECAM Genoa, Italy 2019. 


(77) "Monodispersed ligated gold clusters in aqueous phase: Fundamentals and potential applications", Fujihara symposium, Japan 2019. 


(76) "Closing Remarks", ISMPC-19, Xiamen, China 2019. 


(75) TBD, ACS Spring Meeting 2019, Orlando, FL, USA. 


(74) "Science of Atom-Precise Ligated Noble Metal Nanoclusters: A Computational Perspective", ISAFM International Symposium on Advanced Functional Materials, July 12-14, 2018, Trivandrum, India 


(73) "Gold and silver in nanoscale, stabilized by ligands to molecular precision", Theory of Atomic and Molecular Clusters (TAMC), September 17-22, 2017, Beijing, China. 


(72) "Towards controlled assemblies of ligand-stabilized noble metal nanoclusters", International Material Research Congress IMRC2017, August 20-25, Cancun, Mexico. 


(71) "Intermetallic ligand-stabilized Au-Ag-Cu clusters", International Material Research Congress IMRC2017, August 20-25, Cancun, Mexico. 


(70) "Protected gold and silver nanoclusters shining crystal clear: Looking back, and ahead", International Symposium on Monolayer Protected Clusters (ISMPC17), August 13-16, 2017, Ascona, Switzerland. 


(69) PITTCON, March 5-9, 2017, Chicago, USA. 


(68) "How many atoms make gold metal?", Workshop on Delocalized electrons in atomic and molecular nanoclusters (DEAMN16), International School of Solid State Physics, July 22-28, 2016, Erice, Italy. 


(67) "Stabilized but active nanostructures of gold ", Conference on Cluster-Surface Interactions (CSI), June 2016, Argonne, USA 


(66) "Active gold on active oxides", 251st ACS meeting, March 13-17, 2016, San Diego, USA


(65) "Gold and Silver in Nanoscale, Dispersed by Ligands to Molecular Precision", 251st ACS meeting, March 13-17, 2016, San Diego, USA


(64) "Birth of the localized surface plasmon resonance in thiolate protected gold and silver nanoclusters", CECAM workshop on plasmonics, November 2015, Lausanne, Switzerland


(63) "Gold and Silver in Nanoscale, Dispersed by Ligands to Molecular Precision", International Symposium on Clusters and Nanostructures (ISCAN), October 2015, Richmond, USA


(62) "How many gold atoms make a metal?", IMRC XXIV, August 16-20, 2015, Cancun, Mexico 


(61) "Functionalized gold clusters as site-specific labels for imaging of enteroviruses", IMRC XXIV, August 16-20, 2015, Cancun, Mexico 


(60) "Theoretical concepts: What every MPC researcher should know about electronic shell structure and superatoms ", International Symposium on Monolayer Protected Clusters (ISMPC13), July 2015, Tokyo, Japan


(59)"How many gold atoms make a metal?", GRC on Clusters and Nanostructures, 5-10 July 2015, Girona, Spain 


(58) "How many gold atoms make a metal?", plenary talk in the PQI Annual Workshop, 15-17 April 2015, Pittsburgh, USA 


(57)"Gold and silver in nanoscale, dispersed by ligands to molecular precision", International Symposium on Small Particles and Inorganic Clusters (ISSPICXVII), September 2014, Fukuoka, Japan


(56) "Optical properties of thiolate-protected Au/Ag clusters: From chiral molecular absorption to chiral plasmons ", IMRC XXIII (talk 1), August 2014, Cancun, Mexico


(55) "Gold and silver in nanoscale, dispersed by ligands", IMRC XXIII (talk 2), August 2014, Cancun, Mexico


(54) "Gold and silver in nanoscale, dispersed by ligands to molecular pprecision", GRC on Noble Metal Nanoparticles, June 2014, USA


(53) ACS Symposium "Clusters in Catalysis", March 2014, Dallas, USA


(52) ACS Symposium "Molecular-like metal nanoparticles", March 2014, Dallas, USA


(51) "Superatoms and viruses", International Symposium on Monolayer Protected Clusters (ISMPC13), July 31 - August 3, 2013, Pingree Park, CO, USA


(50) "Superatoms and viruses", ECAMP11, June 24 - 28, 2013, Arhus, Denmark.


(49) "Silver, gold and viruses", workshop on "Stabilized noble metal nanoparticles", June 12-14, 2013, Helsinki, Finland.


(48) "Gold, silver and viruses", 5th International conference on clusters, April 21-25, 2013, Jekyll Island, GA, USA


(47)  "The gold-sulfur interface at the nanoscale" , International symposium on clusters and nanoscale materials (SOCNAM), March 4-7, 2013, Jaipur, India


(46) "Nanoscale gold in passive and active forms", GOLD2012, September 2012, Tokyo. 


(45) "The gold-sulfur interface at the nanoscale", Telluride Science Research Conference on Nanomaterials, Telluride CO, USA, July 2012. 


(44) "The gold-sulfur interface at the nanoscale", CECAM workshop on Theoretical Challenges in the Electronic Structure of Clusters and Nanoparticles, Lausanne, Switzerland, July 2012. 


(43) "The gold-sulfur interface at the nanoscale", CECAM workshop on Quantum Transport in Molecular Nanostructures, Dublin, Ireland, May 2012. 


(42) "Catalytic, nanostructured gold surfaces and interfaces", ISSS-6, Tokyo, Dec 12, 2011. 


(41) "Gold in the nanoscale: More precious than in the bank", GDCh talk at TU Munich Nov 15, 2011. 


(40) "Ligand-protected metal clusters as superatom complexes", International Materials Research Congress IMRC XX, Cancun, Mexico, August 2011. 


(39) "Theoretical insights into catalytic nanoscale gold", ChemBio 2011 Helsinki, Finland. 


(38) "Survival stories of catalytic gold", International Symposium on Activation of Small Molecules, February 20-23, 2011, Erkner, Germany. 


(37) "Molecular electronics and nanoscale photonics", Nanoscience Days 2010, University of Jyvaskyla, Finland, October 2010. 


(36) "Ligand-protected gold clusters as molecular metals", ISSPIC-15, Oaxaca, Mexico, September 2010. 


(35) "Ligand-protected gold clusters: Building blocks for new nanomaterials?", NANO2010, Rome Italy, September 2010. 


(34) "Ligand-protected metal clusters and the superatom complex model", 240th ACS National Meeting, Boston, USA August 2010. 


(33) "Flat Au clusters on thin MgO films: 2D quantum well states, edge charging and reactivity", Cluster-Surface Interactions, Stratford, England, July 2010. 


(32) "Catalytic gold", Spring College on Computational Nanoscience, Trieste, Italy, May 2010. 


(31) "Chemically passivated metal nanoclusters", Spring College on Computational Nanoscience, Trieste, Italy, May 2010. 


(30) "Stability of metal nanoclusters - shells of atoms and electrons", Spring College on Computational Nanoscience, Trieste, Italy, May 2010. 


(29) "Ligand-protected gold clusters as molecular metals", Jekyll Island Meeting on Clusters and Nanosctructures, GA, USA, February 15-18, 2010. 


(28) "Exploring molecular metals by the superatom concept", 238th ACS National Meeting Washington DC August 2009. 


(27) "Quantum size effects in ambient oxidation catalyzed by ligand-protected sub-nanometer gold clusters", Materials Oriented Modeling - Catalysis and Interactions, Stockholm July 2009. 


(26) "Golden superatoms and quantum dots", DEISA symposium Amsterdam May 2009. 


(25) "A unified view of ligand-protected gold clusters as superatoms", (hot topic) ISSPIC-14 Spain Valladolid, 14-19.9.2008. 


(24) "A unified view of ligand-protected gold clusters as superatoms", ISMPC08 Jyväskylä, Finland, 12-13.9.2008. 


(23) "A unified view of ligand-protected gold clusters as superatoms", International Symposium on Clusters on Surfaces, Rostock Germany, May 2008. 


(22) “Structure of thiolate-protected gold clusters: A breakthrough and a dream-come-true”, workshop ”Towards reality in nanoscale materials”, Kittilä Finland 12/2007. 


(21) “Electronic finite size effects in the chemistry of nanoscale gold clusters”, ACS National Fall meeting, Boston, 8/2007. 


(20) “Delocalized but confined electrons on MgO-supported gold clusters: What STM should detect?”, COST D41 general meeting, Vienna 11/2006. 


(19) "Thiolate-protected gold nanoclusters: New insights of bonding", (hot topic) ISSPIC-13 Gothenburg Sweden, July 2006. 


(18) “Functional metal nanoparticles – theoretical aspects”, Lecture in the Nanocluster School 3, June 12, 2006, HUT, Espoo, Finland. 


(17) “The secret life of nanoscale gold”, plenary talk in the XL Annual Meeting of the Finnish Physical Society, March 9-11 2006, Tampere, Finland. 


(16) “Computational spectroscopy of supported cluster nanocatalysts”, International Conference of Computational Methods in Sciences and Engineering (ICCMSE2005), Loutraki, Greece, October 21-26, 2005. 


(15) “Computational optical spectroscopy of supported gold nanocatalysts”, Clustertreffen 2005, Bad Herrenalb, Germany, September 11-16, 2005. 


(14) “Quantum mechanical aspects of biomolecule modeling”, lectures in the summer school “Modelling of biomolecular systems”, May 30 – June 1 2005, Helsinki, Finland. 


(13) “Tailoring the functionality of nanoclusters by computers”, 5th Nordic Conference on Surface Science, Tampere, Finland September 22-25, 2004. 


(12) “Electronic structure calculations of nanoclusters – the non-scalable regime”, 7th International Conference on Nanostructured Materials (NANO2004), Wiesbaden, Germany, June 20-24 2004. 


(11) “Functionalizing gold nanoclusters by computers”, Theory of Atomic and Molecular Clusters (TAMC-4), Toulouse, France, 24-28 April 2004. 


(10) “Density-functional Investigations of Electronic, Catalytic and Optical Properties of Metal Clusters and Nanosctructures”, lectures in the Winter School for Theoretical Chemistry, Helsinki, December 8-11, 2003. 


(9) “Density-functional studies of electronic, optical and catalytic properties of nanoclusters and nanoparticles”, NANOMAT2003, 22-24 October 2003, Brussels, Belgium. 


(8) "First-principles investigations of the chemical reactivity of supported metal catalysts", EURESCO conference of Particle-Solid Interactions, San Sebastian, Spain, 11-16 September 2001. 


(7) "Nanocluster catalyzed reactions", 222nd National Meeting of the American Chemical Society, Chicago, IL, August 26-30, 2001. 


(6) "Reactivity and catalytic properties of metal clusters on surfaces", Symposium "New Directions in Theoretical Chemistry", University of Ulm, Germany, July 17-18, 2001. 


(5) "Understanding catalysis by gold clusters", EURESCO conference on Cluster-Surface Interactions, June 24-29 2000, Castelvecchio Pascoli, Italy. 


(4) "Structure, stability and dynamics of supported metal clusters", Second International Symposium on Theory of Atomic and Molecular Clusters, September 15-20, 1996, Fontana, Wisconsin, USA. 


(3) "Ab initio studies of cluster-surface interaction", 9th Nordic Symposium on Computer Simulation, August 25-27 1995, Hindås, Sweden. 


(2) "Surface Roughening, Superheating and Annealing", APS March Meeting, March 21-25, 1994, Pittsburgh, PA, USA. 


(1) "Melting and roughening transitions of the copper (110) surface", Joint Nordic Spring Meeting '92, May 7-10 1992, Nyborg, Denmark.