122 search results for “lasers” in the Public website
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Surface plasmon lasers
Surface plasmons (SPs) are surface waves at the interface between a dielectric and a good metal, and are formed by the interaction between light and the free electrons at the metal-dielectric interface. They provide strong field confinement for optical fields, opening new possibilities for enhanced…
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Guiding blood vessels with laser light
How can lasers control the growth of new blood vessels?
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Laser-generated toroidal helium plasmas
This dissertation is an experimental study of laser-generated, atmospheric pressure, transient toroidal helium plasmas.
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Lasers, lenses and light curves: adaptive optics microscopy and peculiar transiting exoplanets
Promotores: Prof.dr. C.U. Keller, Prof.dr. H.C. Gerritsen
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Where photons meet phonons
We investigate how radiation pressure can be used to influence the mechanical motion of a micro-mirror suspended from springs.
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Fetal laser surgery as a last resort
For his dissertation, Joost Akkermans searched for areas of improvement for delicate fetal laser surgery with Twin Transfusion Syndrome (TTS). This syndrome occurs in the Netherlands 60 to 70 times a year among single-egg twins sharing one placenta. Treatment is possible, but not without risk. Inaugural…
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Universe Awareness presents home-made laser show in Botswana
How do you offer high-quality and interesting education with simple means? Universe Awareness of Leiden University spoke about this during the annual science festival in Botswana. With among others a laser experiment compiled of household materials, they showed the possibilities to interest young people…
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Magnetism and magnetization dynamics in thin film ferromagnets
Promotores: Prof.dr. J. Aarts, Prof.dr. J.M. van Ruitenbeek
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Light manipulated with large artificial atom
Physicists have manipulated light with large artificial atoms, so-called quantum dots. Before, this has only been done so well with actual atoms. It is an important step towards light-based quantum technology. Publication on August 30th in Nature Communications.
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Surface plasmon lasers
PhD Defence
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Long term dynamics of stochastic evolution equations
Promotor: S.M. Verduyn Lunel, Co-promotor: O. van Gaans
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Prior Research
The van Exter group has an extensive history of prior research in classical and quantum optics. As former part of the group of Han Woerdman, we have studied topics as diverse as:
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Quantum local asymptotic normality and other questions of quantum statistics
Promotor: R. Gill, Co-promotor: P. Massart
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Technical Aspects of Laser Surgery for TTTS
PhD Defence
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Laser-generated toroidal helium plasmas
PhD Defence
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Microscopy Unit
The Microscopy Unit houses, maintains and coordinates most of the microscopy equipment of the IBL. The available equipment ranges from conventional light and fluorescence microscopes, to confocal laser scanning and electron microscopes. In addition, infrastructure is available for histology, including…
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Two-photon multifocal microscopy for in vivo single-molecule and single-particle imaging
In this thesis we investigated the ability of two-photon multifocal microscopy for single-molecule microscopy in live cells and organisms.
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Alumni
Former PhD, Bachelor and Master students of the Van Exter Lab
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Novel system-inspired model-based quantum machine learning algorithm for prediction and generation of High-Energy Physics data
Assistant Professor Vedran Dunjko and his team received a gift from Google to support their quantum research. The research focuses on whether quantum computers can provide new ways of understanding the mysteries of high-energy physics.
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Growth and Transport properties of (Rare Earth)TiO3 / SrTiO3 interfaces
This thesis presents the results of a study on the interfaces of insulating oxides with and without the insertion of a magnetic layer.
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Macrophages and atherosclerotic lesions-projects
For more information regarding ongoing research projects, please contact Prof. Miranda van Eck.
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Portable Laser-Induced Breakdown Spectroscopy (LIBS) as a sample-reducing strategy in Archaeology
Lecture
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Dynamics of Single Protein Molecules by Temperature Cycling under Laser Heating
PhD Defence
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LiDAR
High resolution altitude data created by airborne LiDAR allow the investigation of large areas and often inaccessible tracts of land and has the potential to reveal undiscovered archaeological heritage.
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Photothermal studies of single molecules and gold nanoparticles: vapor nanobubbles and conjugated polymers
Promotor: M.A.G.J. Orrit
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Fine Mechanical Department
What is the Fine Mechanical Department?
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SewerSense
Scientists of Leiden University and Technical University Delft are going to predict how and where defects in sewer systems arise. They are working with light sensitive camera’s, based on new automated multi-sensor inspection with stereo vision and laser range scanning. Their models are going to process…
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Bernd Schneider
Dr. at Max Planck Institute for chemical Ecology, Jena - Germany
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Martin van Exter Lab (Quantum Optics and Light-Matter Interaction)
Research in the van Exter lab focuses on quantum aspects of light and light-matter interaction. One of our long-term goals is to develop a reliable quantum memory, based on a single emitter in an open micro cavity.
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Core Facilities
Core Facilities are shared resources that provide access to instruments, technologies and services to researchers across the Institute of Biology. They are staffed by scientists with vast experience in their field, ensuring that all researchers can count not only on the latest available technology…
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T-CYCLE EPR: Development at 275 GHz for the study of reaction kinetics & intermediates
A difficulty of studies on chemical kinetics are the reaction time scales and detection of their intermediates.
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Michel Orrit Lab (Single Molecule Optics)
Since the early 1990s, one can isolate the optical signal of a single molecule and single-molecule spectroscopy has quickly grown into an important research field.
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Joan van der Waals colloquium
The Joan Van der Waals colloquium is an ongoing bi-weekly lecture series.
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Cationic liposomes loaded with a synthetic long Peptide and poly(i:C): a defined adjuvanted vaccine for induction of antigen-specific T cell
For effective cancer immunotherapy by vaccination, co-delivery of tumour antigens and adjuvants to dendritic cells and subsequent activation of antigen-specific cytotoxic T cells (CTLs) is crucial. In this study, a synthetic long peptide (SLP) harbouring the model CTL epitope SIINFEKL was encapsulated…
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Single gold nanorods in live cells
Visualization of biomolecules in living cells by tagging with gold nanoparticles.
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Rare Earth Supply Chain and Industrial Ecosystem: A Material Flow Assessment of European Union
1) Assess the trends in supply and production status of these critical minerals and mineral products worldwide and Europe’s dependence including on intermediate products such as permanent magnets, RE based super alloys, batteries, polishing compounds, phosphors, catalysts etc. 2) Trace the entire value…
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Surface Reactivity of Activated CO2 Selective use of energy in splitting CO2
Juurlink
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Aarts Lab (Magnetic and Superconducting Materials)
In my group (the Aarts lab) we combine or structure materials, mostly in thin film form, in such a way that the hybrid has different and novel properties or functionalities.
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Nobel Prize for physics: 'Clear solutions are the best discoveries'
What does Leiden physicist Wolfgang Löffler think about the award of the Nobel Prize for physics to Arthur Ashkin, Gérard Mourou and Donna Strickland?
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Media about the late Nicolaas Bloembergen
Nicolaas Bloembergen, who won the Nobel Prize in Physics in 1981, passed away on 5 September in Tucson, Arizona. Bloembergen obtained his PhD on nuclear spin resonance in 1948 at Leiden University. Some articles about his life.
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Visualising the nanoworld
Visualising cell proteins without invasive techniques is possible with the help of fluorescence. During a lecture of the Natuurwetenschappelijk Gezelschap Leiden on 18 January, winner of the Spinoza Prize 2017 and founder of the field of single molecule optics Michel Orrit explained how this works.
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Why Leiden University?
The Physics and Quantum Matter and Optics specialisation is one of the two programmes Leiden offers in experimental physics. The programme can be tailored to individual needs and interests.
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Cardiovascular and Metabolic Therapeutics
This research group, headed by Miranda van Eck, focusses on understanding the molecular mechanisms underlying cardiovascular and metabolic diseases. Cardiovascular disease constitutes a major health issue worldwide. Although significant knowledge has been obtained on the development of atherosclerotic…
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Gas-surface reaction dynamics and surface science
The local ordering of atoms at the surface of a metallic particle determines its catalytic activity and selectivity. As energy systems of the future will be based on efficient catalytic conversion of small molecules in closed cycles, we study how structural effects of catalysts can be used to our ad…
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Chara
The Green algae Chara as model system for intra and inter cellular transport processes.
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Electronics Department
What is the Electronics Department?
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Setup: MRFM
MRFM combines the principles of magnetic resonance and atomic force microscopy.
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An artificial atom as qubit
With a pioneering project like the quantum computer, it’s a good idea not to place all your bets on a single horse. In Leiden’s Quantum Optics research group, instead of working on a Majorana-based qubit, people are working on a qubit based on an ‘artificial atom’. If that becomes the basis of the quantum…
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Leiden physicists in the media on Nobel Prize
The 2018 Physics Nobel Prize is awarded to Arthur Ashkin, Donna Strickland and Gérard Mourou for their research on optical tweezers based on lasers. Leiden physicists comment in the following media.
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Orrit receives NWO-TTW Open Technology Programme grant
Michel Orrit has received an NWO-TTW Open Technology Programme grant. He will use it to image single molecules without the need for fluorescence.