50 zoekresultaten voor “lliquid crystals” in de Publieke website
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Crystal EnnisFaculteit der Geesteswetenschappen
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Suppressing a Sea of Starlight: Enabling technology for the direct imaging of exoplanets
Promotor: Christoph U. Keller, Co-promotores: Matthew A. Kenworthy, Frans Snik
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A new method to reconstruct the structure from crystal images
Promotor: J.P. Abrahams, Co-promotor: T. Grüne
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structure dependencies of gas-surface interactions with curved single crystals
Curved single crystals provide variable, but well-defined surface structures.
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The symmetry of crystals and the topology of electrons
Promotor: J. Zaanen, Co-Promotor: V. Juricic
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It's just a phase: High-contrast imaging with patterned liquid-crystal phase plates to facilitate characterization of exoplanets
This thesis aims to demonstrate how the achromatic nature and design flexibility of liquid-crystal optics can be used to improve high-contrast imaging instruments to facilitate detailed exoplanet characterization.
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Adsorption and catalysis on Pt and Pd monolayer-modified Pt single crystal electrodes
The focus throughout this thesis will be on gathering fundamental studies of the detailed structure and composition of the electrode/electrolyte interface effect on the rate and mechanism of key electrocatalytic reactions.
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Structure dependence of molecular reactions on surfaces
The research presented in this thesis makes use of small molecules (as H2 , D2 and O2 ) on well-defined single crystal surfaces (flat Pt(111), flat Cu(211) and curved Pt(111)) to elucidate the role of surface structure and degrees of freedom in the reactant in specific surface reactions.
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The road to insurmountability: Novel avenues to better target CC Chemokine receptors
This thesis explores different avenues to develop insurmountable antagonists for CC Chemokine Receptors, such as CCR1, CCR2 and CCR5.
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Microscopy and Spectroscopy on Model Catalysts in Gas Environments
In surface science there is great effort to move from studying simple, flat model surfaces in vacuum to investigating more complex model catalysts in gas environments (in situ). This thesis gives three examples of such studies using microscopy and spectroscopy.
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Spin-momentum locking in oxide interfaces and in Weyl semimetals
Electrons in a crystal lattice have properties that may differ from those of a free electron in vacuum.
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Allosteric modulation by sodium ions and amilorides of G protein- coupled receptors
Promotor: A.P. IJzerman
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Allosteric modulation by sodium ions and amilorides of G protein-coupled receptors
Promotor: A.P. IJzerman
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Reticular Chemistry: The Journey to Beautiful and Functional Porous Crystals
Lezing
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structure dependencies of gas-surface interactions with curved single crystals
Promotie
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Cathodic corrosion
Cathodic corrosion is a relatively unknown phenomenon that can severely etch metallic electrodes at cathodic (negative) potentials.
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Interaction of oxygen and carbon monoxide with Pt(111) at intermediate pressure and temperature: revisiting the fruit fly of surface science
Promotor: M.T.M. Koper, Co-promotors: A.I. Yanson, L.B.F. Juurlink
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Geometry and Topology in Active and Driven Systems
The key characteristic of active matter is the motion of an emergent collection (such as a flock of birds), which is driven by the consumption of energy by its active components (i.e. individual birds).
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Molecular and Nano-Engineering with Iron, Ruthenium and Carbon: Hybrid structures for Sensing
Metal complexes and 2D materials like graphene were combined to produce structures that can function as sensors.
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Magnetic imaging of spin waves and magnetic phase transitions with nitrogen-vacancy centers in diamond
The elementary excitations of magnets are called spin waves, and their corresponding quasi-particles are known as magnons. The rapidly growing field of Magnonics aims at using them as information carriers in a new generation of electronic devices, (almost) free of electric currents.
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Adsorption and Catalysis on Pt and Pd Monolayer-modified Pt Single Crystal Electrodes
Promotie
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Stable single molecules for quantum optics and all-optical switches
Promotor: Prof.dr. M.A.G.J. Orrit
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Software developments in automated structure solution and crystallographic studies of the Sso10a2 and human C1 inhibitor protein
Promotor: Prof.dr. J.P. Abrahams, Co-Promotor: N.S. Pannu
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Ab initio molecular dynamics calculations on reactions of molecules with metal surfaces
Promotor: Prof.dr. G.J. Kroes
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Another Brick in the Wall: The role of the actinobacterial cell wall in antibiotic resistance, phylogeny and development
Streptomyces are multicellular, Gram-positive bacteria in the phylum of actinobacteria which produce a high amount of bioactive natural products of which the expression is tightly coordinated with the life cycle.
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Sterrewacht Leiden
Sterrewacht Leiden is het sterrenkundig instituut van de Faculteit der Wiskunde en Natuurwetenschappen van de Universiteit Leiden.
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It's just a phase: High-contrast imaging with patterned liquid-crystal phase plates to facilitate characterization of exoplanets
Promotie
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Nieuwe theorie voor vloeibare kristallen met hoge symmetrie
LCD-schermen gebruiken vloeibare kristallen die weliswaar een vloeistof vormen maar toch in hoge mate geordend zijn. Een nieuwe theorie brengt nu het samenspel in kaart tussen orde, temperatuur en symmetrie. Publicatie in Physical Review X.
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Joan van der Waals colloquium
Lezing
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Rachel Doherty wint de LION Image Award met viraal microbootje
De jaarlijkse LION Image award gaat naar de foto van een 30 micrometer lang 3D-geprint bootje dat in oktober viraal ging, ingediend door Rachel Doherty van de groep van Daniela Kraft.
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Europese routekaart voor toepassing van grafeen in wetenschap en technologie
Meer dan 60 Europese wetenschappers en partners uit het bedrijfsleven ontvouwen in het tijdschrift Nanoscale hun stappenplan voor de toepassing van grafeen in producten voor de markt. Scheikundige Grégory Schneider gelooft dat grafeen en andere gelaagde materialen in de toekomst gebruikt kunnen worden…
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This Week’s Discoveries | 12 March 2019
Lezing
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Joan van der Waals colloquium
Lezing
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This Week’s Discoveries | 2 February 2016
Lezing
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This Week’s Discoveries | 31 May 2016
Lezing
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Geometric Phases in Soft Materials
Promotie
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What Makes Network Problems Hard to Solve? Transitions in Computational Complexity
Lezing, Studium Generale
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ERC Consolidator Grants voor vier Leidse wetenschappers
De European Research Council heeft aan vier Leidse onderzoekers een ERC Consolidator Grant toegekend. Met deze beurs van maximaal twee miljoen euro kunnen zij hun wetenschappelijk onderzoek voortzetten en uitbreiden.
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Opening van een bijzonder facultair jaar: ‘Let op elkaar’
Een speciaal begin van dit unieke collegejaar 2020 – 2021: op woensdag 2 september vond de opening van het facultaire jaar online plaats vanuit het vernieuwde Arsenaalgebouw. De opening startte met een tafelgesprek met negen speciale gasten en werd gevolgd door een quiz en de uitreiking van de Facultaire…
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Leidse natuurkundigen fotograferen klonterige supergeleider
Hoge-temperatuur-supergeleiding is een van de grootse raadsels in de natuurkunde. Milan Allans onderzoeksgroep gebruikte een Josephson Scanning Tunneling Microscope om voor het eerst beelden te maken van de ruimtelijke variatie van supergeleidende deeltjes. Het leverde ze een Nature-publicatie op.
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Luca Giomi wint ERC Consolidator-subsidie voor stromende cellen
Theoretisch natuurkundige Luca Giomi ontvangt een ERC Consolidator grant van 2 miljoen euro, waarmee hij vloeiende cellen gaat onderzoeken.
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Applications of topology to Weyl semimetals and quantum computing
Promotie
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Joan van der Waals colloquium
Lezing
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LCN2 Seminar: Dynamics on lattices
Lezing
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Joan van der Waals colloquium
Lezing
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Another Brick in the Wall: The role of the actinobacterial cell wall in antibiotic resistance, phylogeny and development
Promotie
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Magnetic imaging of spin waves and magnetic phase transitions with nitrogen-vacancy centers in diamond
Promotie
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World Cultural Council Awards 2017
Festival, Award ceremony
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This Week’s Discoveries | 2 April 2019
Lezing
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Visions of Empire in Dutch History - from the early modern period to the 21st century
Congres/symposium