Home - Applied nanoPhysics Group

Center for Bionanoscience Research (CIBION), National Scientific and Technical Research Council (CONICET)
Physics Department, Faculty of Exact and Natural Sciences, University of Buenos Aires (UBA)

Using optical methods, we explore the properties and technological applications of nanoparticles, single molecules, nanostructured materials, supramolecular assemblies, biological and hybrid nanosystems.

The Applied nanoPhysics Group was launched in October 2009 at the Physics Department, Faculty of Exact and Natural Sciences, of the University of Buenos Aires (UBA)

In 2012 we moved our labs to the Center for Bionanoscience Research (CIBION) of the National Scientific and Technical Research Council (CONICET), while Prof. Stefani still holds his position at the Physics Department of the University of Buenos Aires.

CURRENT RESEARCH ACTIVITIES

Fluorescence nanoscopy.

Super-resolution fluorescence microscopy, also known as fluorescence nanoscopy, has revolutionized biological imaging because they provide deep sub-wavelenght spatial resolution while keeping the low-invasiveness of far-field optical interrogation. We apply and optimize well-established methods like STED and STORM, and develop new ones, such as MINFLUX, and open-source software for fluorescence nanoscopy. With them, we address questions of cellular and neuronal biology.

Optical printing colloidal nanoparticles.

Colloidal chemistry enables the fabrication of nanoparticles of different shapes, sizes and material compositions, that exhibit unique physical and chemical properties, inexistent in bulk materials. In order to make use of those properties in devices and circuits, it is necessary to develope methods to bring the colloidal nanoparticles from the liquid phase to specific locations of solid substrates. We address this challenge using optical forces.

Self-assembled Nanophotonic Devices.

Semiconductor-based devices are approaching intrinsic limits of speed and heat dissipation.
Optical devices are faster and practically loss-less, but their size miniaturization is limited by the wavelength of light. Nanophotonics and Plasmonics deals with the manipulation of light at the nanoscale. We investigate light-matter interaction between single-photon emitters and metallic nanoparticles organized in nanodevices by self-assembly.

LATESTS NEWS

Cecilia Zaza wins OSA Emil Wolf Student Paper Competition

nano_x7n4r02021-03-20T20:36:14+00:00September 19th, 2019|

Each year, the Optical Society of America Foundation recognizes a number of students and early career professionals through different Prizes and Paper Competitions. Cecilia Zaza was recognized with the Emil Wolf Student Paper Competition after presenting her talk on "Size-Selective Optical Printing of Silicon Nanoparticles through Their Dipolar Magnetic Resonance" [...]

Premio Houssay 2018 to Prof. Stefani

nano_x7n4r02021-03-20T20:37:30+00:00September 13th, 2019|

The National Secretariat of Government for Science, Technology and Productive Innovation awarded the Houssay Award in the category of Mathematics, Physical Sciences, Computer Science and Astronomy to Prof. Dr. Fernando Stefani. The Houssay Award in this category is given once every four years, and is aimed at researchers under 45 [...]

Luciano Masullo presents our new pulsed-interleaved MINFLUX at the PQ meeting

nano_x7n4r02021-03-20T21:02:38+00:00September 5th, 2019|

The PhD project of Luciano Masullo deals with developing a new implementation of MINFLUX using pulsed excitation. He had the great honor of presenting his advances at the special 25th-anniversary edition of the PicoQuant workshop, sharing program with the most brilliant researchers in the field. Prof. Markus Sauer, Prof. [...]

Directional Single-Molecule Emission with DNA Origami-Assembled Optical Antennas

nano_x7n4r02021-03-20T21:09:00+00:00August 26th, 2019|

DNA-origami is a wonderful technique that enables the fabrications of all kinds of nanoscopic objects. We have been using them to build nanophotonic devices combining metallic nanoparticles to form optical antennas and single molecules. In our recent paper in Nano Letters, we demonstrate how optical nano-antennas self-assembled using DNA-origami can [...]

Luciano Masullo visits the Tinnefeld Lab at LMU

nano_x7n4r02021-03-20T21:10:44+00:00August 5th, 2019|

From August 1st until November 30th, Luciano is visiting the group of Prof. Philip Tinnefeld at the Faculty for Chemistry of the Ludwig-Maximilians-University of Munich (LMU), financed with a DAAD Scholarship. Luciano´s research stay is part of our standing cooperation with the group of Prof. Tinnefeld. He will help our [...]

XIX Meeting on Surfaces and Nanostructured Materials

nano_x7n4r02021-03-20T21:12:34+00:00June 6th, 2019|

From 5 to 7 June 2019, our national NANO meeting, the XIX Meeting on Surfaces and Nanostructured Materials, was held in Buenos Aires. Since 2001, this event brings together representatives from the academic, scientific and productive sectors to discuss the state of the art, challenges and advances in different areas [...]

1st Meeting of Young Researchers in Bionanosciences

nano_x7n4r02021-03-20T21:14:27+00:00May 7th, 2019|

Students and young researchers from various disciplines working in the field of Bionanosciences gathered at the National University of San Martín (UNSAM) to share and discuss their projects, ideas, and perspectives. The meeting was organized by graduate and undergraduate students doing research at CIBION, the National University of San Martín [...]

Research stay of Dr. Florian Steiner from LMU

nano_x7n4r02021-03-20T21:26:20+00:00April 4th, 2019|

Dr. Florian Steiner, postdoc in Prof. Tinnefeld's group at Ludwig-Maximilians-Universität München, visited our lab during the last month to learn about our new pulsed-interleaved MINFLUX set-up. During his stay, Florian (on the right; are those sunglasses??) worked closely with Ph.D. candidate Luciano Masullo (on the left, with proper laser safety [...]