29 citations · 49 across the 6 of their papers we have counts for
7 papers
Direct observation of structural heterogeneity and tautomerization of single hypericin molecules
Quan Liu, Frank Wackenhut, Liangxuan Wang +6
Tautomerization is a fast chemical reaction where structures of the reactants differ only in the position of a proton and a double bond. Tautomerization often occurs in natural sub…
Periodic Fluorescence Variations of CdSe Quantum Dots Coupled to Aryleneethynylenes with Aggregation Induced Emission
Krishan Kumar, Jonas Hiller, Markus Bender +7
CdSe nanocrystals and aggregates of an aryleneethynylene derivative are assembled into a hybrid thin film with dual fluorescence from both fluorophores. Under continuous excitation…
Multimode Vibrational Strong Coupling of Methyl Salicylate to a Fabry-Perot Microcavity
Wassie Mersha Takele, Frank Wackenhut, Lukasz Piatkowski +2
The strong coupling of an IR-active molecular transition with an optical mode of the cavity results in vibrational polaritons, which opens a new way to control chemical reactivity…
Hypericin: Single molecule spectroscopy of an active natural ingredient
Quan Liu, Frank Wackenhut, Otto Hauler +4
Hypericin can be found in nature in Hypericum perforatum (St. John's Wort) and has become subject of intense biochemical research. Studies report of antidepressive, antineoplastic,…
Direct phase mapping of the light scattered by single plasmonic nanoparticles
Otto Hauler, Frank Wackenhut, Lukas A. Jakob +5
In this work, we present a novel technique to directly measure the phase shift of the optical signal scattered by single plasmonic nanoparticles in a diffraction-limited laser focu…
Tunable strong coupling of two adjacent optical λ/2 Fabry-Pérot microresonators
Achim Junginger, Frank Wackenhut, Alexander Stuhl +3
Optical half-wave microresonators enable to control the optical mode density around a quantum system and thus to modify the temporal emission properties. If the coupling rate excee…
Two and three photon excited luminescence of single gold nanoparticles: Switching between plasmon- and electron-hole-pair emission by ultrashort laser pulses
Frank Wackenhut, Xiao Wang, Antonio Virgilio Failla +1
In this work we use femtosecond laser pulses of 800 nm wavelength to excite and characterize the multiphoton luminescence emission of single gold nanoparticles. For excitation with…