Promotores: Prof.dr. T.H.W. Bäck, Prof.dr. M.R.V. Chaudron, Co-Promotor: M.T.M. Emmerich

In this thesis we study the landscape of gravitational models which modify GR by introducing an additional scalar degree of freedom (d.o.f.) to source Cosmic Acceleration.

This project applies a social-historical approach to examine and contrast various groups of African-American slave refugees who sought freedom within North America between 1800 and 1860. It innovatively distinguishes between different “spaces of freedom” for runaway slaves, namely sites of formal, semi-formal,…

This is the 2017 paperback release of William Michael Schmidli's The Fate of Freedom Elsewhere, which won the 2013 Foreign Affairs Magazine Best Book of the Year.

Beenakker

Electrons in a crystal lattice have properties that may differ from those of a free electron in vacuum.

Atoms and molecules are the basic units of matter. If we keep dividing a bar of gold or a glass of water into smaller parts, at the end we are left with a single gold atom or a water molecule.

On a structural level, the properties featured by a majority of mechanical metamaterials can be ascribed to the finite number of soft internal degrees-of freedom allowing for low-energy deformations.

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.

In the first part of this thesis we study the geometry of folding patterns.

The Khoesan were the first people in Africa to undergo the full rigours of European colonisation. By the early nineteenth century, they had largely been brought under colonial rule, dispossessed of their land and stock, and forced to work as labourers for farmers of European descent.

Press freedom in Indonesia is still under pressure, despite the demise of Soeharto’s regime in 1998

Do you have to be able to say everything on Twitter and Facebook? Is Instagram morally obliged to remove photos from attacks? Should we allow the terrorist group to recruit new members on the internet?

Recently Cambridge University Press published dr. Jan Osters monograph “Media Freedom as a Fundamental Right”.

This research focuses on the (Quantum) Dynamics (QD) of the reactive scattering of H2 from metal surfaces.

This thesis focuses on the concepts of freedo and fixity as two central topics of my artistic research. I present, analyze. and contextualize four of my works which have explicit links to fleedom and fixify and which demonstrate the dynamic interrelationship between the two.

On 22 November 2018, Els De Busser spoke at a panel during the conference

The two-year research programme Applied Mathematics offers courses at an advanced level. There is a large degree of freedom in choosing one’s own topics. Some of the courses are given at national level, in the Dutch Mastermath programme. The programme concludes with the preparation of a master’s the…

From Incident to Precedent

Promotor: Prof.dr. G.J. Kroes

We are a dynamic research group at the Leiden Institute of Physics. Our aim is to explore and understand quantum materials, including strange metals, high-temperature superconductors, and quantum critical electron matter.

On 10 June 2021, Merinda Stewart defended her thesis 'Freedom of Overflight: A Study of Coastal State Jurisdiction in International Airspace'. The doctoral research was supervised by Prof. P.M.J. Mendes de Leon en Prof. J.J. Rijpma.

Overview of the Asia Programmes offered at Leiden University.

In Freedom Stories we share the freedom stories of our students and staff, in honour of Liberation Day in The Netherlands. Today, we share Leen's story. We asked her, what does freedom mean to you?

Research at the THEOR group is comprised of the following research themes:

Leiden University College The Hague offers Bachelor of Arts and Bachelor of Science degrees in Liberal Arts & Sciences that focus on the global challenges of today: Peace & Justice, Sustainability, Prosperity, and Diversity.

Four videos tell the story of the history of Leiden University. The films were premiered on 2 November during the Leiden Film Festival.

Master

On 3 March the book “The European Union as an Area of Freedom, Security and Justice” edited by Maria Fletcher, Claudio Matera and Esther Herlin-Karnell was officially presented at a symposium at VU University Amsterdam.

In addition to regular degree programmes (bachelor’s and master’s), Leiden University offers university-level courses and lectures targeted at a diverse range of groups. If you would like to take a course or pursue another degree after your bachelor’s or master’s or alongside your work, there is a wide…

To be admitted to the master’s degree programme in September 2022, you need to register in Studielink. You need to submit another application for admission, this time for the MSc Psychology. Your application must be completed by the 15th of June 2022. If you want to start the master’s degree programme…

‘Praesidium Libertatis is a daily responsibility.’ These were the words of Rector Magnificus Carel Stolker on 8 February during the 443rd Dies Natalis of Leiden University. The University needs to pay continuous attention to open debate if it wants to remain a bastion of freedom.

Chemical reactions go hand-in-hand with an energy exchange with the environment in which they take place. Surfaces offer a variety of energy dissipation channels, constituted by the nuclear and electronic degrees of freedom of the atoms at the interface. Aiming at an improved future harvesting of energy,…

This thesis contains results on the arithmetic and geometry of del Pezzo surfaces of degree 1.In Chapter 1 we give the necessary background, assuming the reader is familiar with algebraic geometry.

Professor Jan Willem Erisman is happy with the freedom at our University. But frameworks are needed, he believes. That is why he makes a proposal for such a framework from the perspective of his own profession. In fact, he makes a proposal for a wonderful ambition for Leiden University.

On 23 and 24 November scholars working on European Justice and Home Affairs, united at the European University Institute in Florence on the occassion of the 25th year jubilee of the Area of Freedom, Security and Justice. The EU policy area covering migration, asylum and criminal justice cooperation.

A new paperback edition of Brian Heffernan's book Freedom and the Fifth Commandment. Catholic priests and political violence in Ireland, 1919-21 was published by Manchester University Press in September 2016.

Lecture

Baroque flautist Jed Wentz followed two years of dancing classes in order to develop the right feeling for the gestures required for the Baroque French opera genre ‘tragédie en musique’. In his dissertation, the links between gesture affect and rhythmic freedom in the performance of the tragédie en…

Members of Parliament will soon be discussing with various organisations what the Netherlands can do to stop pushbacks, a policy where migrants are forced back at the European borders.

Tolerance and democracy are not our European values

Leiden physicists exploit self-assembly of small particles to someday create functional structures such as micro-robots from the bottom up. They have now taken an important step forward by experimentally realizing joints at micrometer scale. Publication in Nanoscale.

Leiden University was the first university to be established in the Netherlands. William of Orange gave Leiden Academia Lugduno Batava in 1575, it is said in recognition of the city’s courageous resistance against the seige by the Spanish invaders.

Promotor: S.J. Edixhoven Co-promotor: L. van Geemen, P. Parent

Leiden University celebrated its 443th foundation day on 8 February 2018.

After a gestation period lasting twelve years, on 13 March the artwork by Adam Uriel adorning the spiral staircase in the Academy Building was finally unveiled. It is a contemporary variation on the drawings by Victor de Stuers, dating from 1865, that start at the lower end of the staircase.

The dissociative chemisorption of a molecule on a transition metal surface represents a rate-limiting step in many heterogeneously catalyzed processes, whereby most chemicals are made. In spite of the importance of this reaction, an accurate first principles approach to modeling it does not yet exist.…

Lecture