Prelekcję pt. „Dash dot / dot dash / dash dot / dash dash dash – Morse Coding with nanotechnology wygłosi prof. Sebastian Maćkowski z Instytutu Fizyki, Wydziału Fizyki, Astronomii i Informatyki Uniwersytetu Mikołaja Kopernika w Toruniu.
Wystąpienie poświęcone będzie kodowaniu z wykorzystaniem nanotechnologii, łączącemu zagadnienia fizyki i nowoczesnych rozwiązań technologicznych.
Informacje organizacyjne:
- Termin: 14 października 2026 r. (środa), godz. 10:15
- Miejsce: Mała Aula, Wydział Fizyki i Informatyki Stosowanej UŁ, ul. Pomorska 149/153 w Łodzi
- Prelegent: prof. Sebastian Maćkowski, Uniwersytet Mikołaja Kopernika w Toruniu
- Tytuł referatu: Dash dot / dot dash / dash dot / dash dash dash – Morse Coding with nanotechnology
Abstract: Colloidal semiconductor quantum dots (QDs) are attractive nanoscale emitters due
to their high quantum yields, photostability, and spectral tunability. Silver nanowires (AgNWs),
in turn, support long-range propagation of surface plasmon polaritons (SPPs). During the
presentation I will show how a voltage-free method of precise and reproducible deposition of
QD-containing microdroplets can be combined with controlled positioning of AgNWs to
assemble hybrid nanostructures on demand.
The approach relies on hydrophobic microcapillaries controlled by piezoelectric actuators,
enabling fabrication of microdroplets smaller than 500 nm and containing controlled numbers
of QDs, down to single emitters. Importantly, deposited microdroplets can be repositioned on
the surface without morphological or optical degradation.
In one experiment, a QD-containing microdroplet was moved along a single AgNW while the
nanowire was optically excited at one end. The decrease of luminescence intensity with
distance enabled non-invasive determination of plasmon damping in the AgNW. In another
experiment, two AgNWs were connected by a QD-containing microdroplet. Optical excitation
of one nanowire produced emission from the far end of the second nanowire, demonstrating
remote transfer of optical signals mediated by the QDs.
These results provide a platform for constructing hybrid QD–AgNW architectures with
predefined geometry and functionality, promising for nanoscale optical communication,
information processing, and biosensing.
Spotkanie będzie w języku angielskim.
Serdecznie zapraszamy do udziału!
