The Laboratory for Nano-Optics deeply regrets the tragic accident and the death of Dr. Dmitry Fedyanin. We express our sincere condolences to Dmitry's family and friends. Dmitry was a recipient of a Walter Benjamin Position of the DFG on “Pulsed electrically driven single-photon sources on diamond” and since July 2023 he has been a research associate in our group. We have been collaborating since almost a decade on the electroluminescence from color centers in diamond. We mourn the loss of a good friend and of a talented young scientist.
Group member Navid Soltani obtains the PhD in Physics. Congratulations!
Our book chapter on ultrafast single-photon detection published in Advances in Nonlinear Photonics.
Our latest work on ODMR published in Adv. Quantum Technol.
Join the celebrations for the 50th birthday of the University of Siegen. Check out the program Offene Uni.
Group member Lukas Hunold receives the student prize of the Kreis Olpe for his master thesis. Congratulations Lukas!
Our latest work on biosensing with planar antennas published in Biomed. Opt. Express
Check out the Adv. Photonics Theme Issue on Photonics Advances Quantum Science and Technologies
Our article on scalable SiV creation by ion implantation on the front cover of the December Issue of Adv. Quantum Technol.
Check out the JOSA B Feature Issue on Light-Matter Interaction in Complex Photonics Systems
Our latest work on planar antennas published in JOSA B
Our review on silicon-vacancy centers in diamond published in Frontiers in Physics
Fiber-Based Planar Antennas for Biosensing and Diagnostics, ERA-NET PhotonicSensing (2018-2022)
Traditional methods for pathogen determination delay treatment and increase the recovery period for the patient. The ability to deliver critical data for decision makers in a timely manner makes high-performance diagnostic tools a future key component of the healthcare system. Although fluorescence-based approaches are widely available, conventional read-out optics is bulky, not flexible and often lacks of single-molecule sensitivity. Nanophotonics-based sensing promises to build on the advantages of optical sensing while overcoming its limitations, providing higher sensitivity as well as easier integration into affordable devices and disposable units. We have recently introduced and demonstrated an optical antenna that can largely improve the collection efficiency by beaming the emission of molecules into a narrow cone. The project aims at translating these findings into a fluorescence-based molecular assay for in-vitro diagnostics, integrating fluidic and optical readout functionalities in a low-cost disposable unit coupled to an automated platform. The key photonic innovation of the project is the replacement of the bulk optics with a suitably designed photonic chip. The latter shall direct fluorescence towards the sensor head, enhancing the fluorescence limits of detection by orders of magnitude and giving the possibility to reduce or eliminate amplification steps, which are known to introduce errors and increase the readout time. The bioassays and the platform validation will focus on sepsis, which is a common hospitalization disease with high mortality rates. The photonic chip will be functionalized with biological recognition elements for selected target molecules, e.g., proteins and microRNA probes. Our aim is to rapidly translate a scientific achievement into an innovative technology, where large sensitivities are attained in a compact and low-cost device, and to provide new tools to diagnose sepsis, a major challenge of the healthcare system.
P. Cecchi, Cecchi srl
F. Sonntag, Fraunhofer IWS
S. Howitz, GeSiM mbH
A. Giannetti, Institute of Applied Physics (CNR-IFAC)
C. Toninelli, National Institute of Optics (CNR-INO)
M. Agio, University of Siegen