Before the large scale use of renewable energy sources can be implemented in our society, the storage of electrical energy needs to be tackled. Storage the energy as hydrogen via the reduction of protons is a good option.

Publicaties van het Leids Papyrologisch Instituut

feestbundel voor de Britse demotisant Cary J. Martin (UC Londen)

Promotor: M.T.M. Koper, Co-promotor: L. Juurlink

Promotor: P.J.J. Hooykaas, Co-Promotor: E.J. van der Zaal

In the current global context, there is a pressing need to address sustainable energy supplies to safeguard our Planet and its ecosystems. The choices made by human society have a significant impact on genetic evolution and climate.

Human civilization consumes a huge amount of fossil fuels, which has resulted in an atmospheric CO2 level which has not been higher in over 800 millennia.

Reducing greenhouse gas emissions is one of the most pressing challenges that humanity faces in the coming decades.

In this thesis, we study different curved single crystals because of the diversity of surface structures across their curvature.

The transition to electric vehicles (EVs) reduces vehicle emissions to combat climate change. EVs raise concerns regarding the production of lithium-ion batteries and related emissions; while batteries can also provide energy storage services for the electricity system.

This thesis studied in depth the energy use and CO2 emissions of the industrial sector in China.

This thesis addresses the problem of designing performance and energy efficient embedded streaming systems, that is, systems which process a stream of input data coming from the environment and generate a stream of output data going into the environment.

With increasing carbon dioxide levels in the atmosphere and their detrimental effect on the global climate, modern society needs to push for more renewable energy sources. Storing widely accessible and abundant solar energy in chemical bonds in the form of molecular fuel via artificial photosynthesis…

The growing demand of energy indicates that global energy resources in the form of fossil fuels will not be sufficient in the future. In order to solve potential future energy problems development of a sustainable hydrogen economy is highly desirable.

Met de huidige marktregels is het behoorlijk risicovol om in groene energie te investeren, en dat staat de strijd tegen klimaatverandering in de weg. Dat schrijft milieuwetenschapper Oscar Kraan in zijn proefschrift. Promotie op 25 april.

Promotor: Prof.dr. J. Schaye, Co-promotor: Marcello Cacciato

Van een nieuwe generatie antibiotica en een betere werking van vaccins tot een routekaart voor donkere materie en nieuw licht op Hindoetradities. Vier wetenschappers van de Universiteit Leiden ontvangen de prestigieuze ERC Advanced Grant van 2,5 miljoen euro om hun onderzoek uit te bouwen.

This thesis is a (biased) journey through very different topics in astrophysics: quasars and new populations of active galactic nuclei, gravitational waves from merging black holes, and protoplanetary discs around young stars.

Om windturbines en elektrische auto’s te bouwen, hebben we tonnen magneten nodig. Momenteel importeren we die voornamelijk uit China, waardoor Europa voor de energietransitie erg afhankelijk is van deze grootmacht. Daar moet verandering in komen, aldus Industrieel ecoloog René Kleijn. In het project…

Heterogeneous catalyzed processes are highly significant to the chemical industry. Dissociative chemisorption (DC) of molecules on surfaces is always considered as a step with a high degree of rate control for heterogeneous catalysis.

This thesis examines the impacts and challenges of water use of electric power system. This thesis found that there are large differences in water use of electricity technologies, with hydropower and thermal power being two large water users.

Promotor: W.Th.F. den Hollander, Co-promotor: F.R. Nardi

Promotors: Prof.dr. J. Zaanen, Prof.dr.ir. H. Hilgenkamp

Fundamental understanding of molecular reactions on metal surfaces is important for improving heterogeneous catalysis.

Promotor: T.J. Aartsma, Co-promotor: R.N. Frese

In de jacht op nieuwe deeltjes doorzoeken natuurkundigen botsingen bij steeds hogere energie, waarbij ze de energiefrontier telkens een stukje verleggen. Sommige deeltjes laten zich echter moeilijk vangen omdat ze zeldzaam interactie vertonen; niet vanwege een hoge energie. Dit werpt een nieuwe barrière…

Wat is donkere materie? Hoe ontstaan superzware zwarte gaten? ‘Oer’-zwarte gaten bevatten wellicht het antwoord op deze langlopende vragen. Leidse en Chinese kosmologen hebben nu een nieuwe manier gevonden waarop deze hypothetische hemellichamen kunnen ontstaan vlak na de oerknal. Publicatie in Physical…

Festival

Festival

Overzicht van de voornaamste onderzoeksprojecten van het Leids Papyrologisch Instituut.

Van een nietszeggend blok kunststof tot een geavanceerd onderdeel dat bijdraagt aan de energietransitie. De technici en wetenschappers van onze faculteit denken het tot in de details uit én maken het werkelijkheid. Ook dit bijzondere project laat zien dat ze niet zonder elkaar kunnen.

Een elastische doek over een kom die de ruimte voorstelt, een knikker die op het oppervlak een kuiltje veroorzaakt en zo de ruimte vervormt. Eenvoudige klasexperimenten zoals deze zijn te zien in nieuwe educatieve video's van AstroEDU. In de video's leggen de Leidse astronomen Maria Cristina Fortuna…

Promotor: K.E. Schalm, Co-promotor: S.S. Lee

Promotor: K. Kuijken, Co-Promotor: H. Hoekstra

This thesis describes a study from both a theoreticaL and an experimental point of view.

Tin electrodeposition applications have rapidly evolved in the past 25 years.

Green hydrogen is produced via a process called water electrolysis. During electrolysis water is split into oxygen and hydrogen.

To limit the effects of climate change, global average temperature since pre-industrial measurements are to be kept well below 2 °C preferably even at 1.5 °C.

Solar energy is used by photosynthetic organisms to drive energy required cellular processes. Is absorbed by two groups of pigments, located in the LHCs.

Following the Big Bang, structure in the Universe started collapsing under the force of gravity. This resulted in the formation of the first stars, galaxies and clusters of galaxies.

One of the most important correlation functions in physics, especially in cosmology, is the energy density, which describes how much energy is present at each point in spacetime due to matter fields. A key contribution to the energy density of the primordial universe comes from gravitational waves (GWs),…

Inspired by natural photosynthesis, perovskite-based photoelectrochemical (PEC) systems are being developed for artificial photosynthesis, aiming to enhance solar-to-hydrogen conversion for green energy.

We find ourselves in an era of transition, not just towards a more computing- and data-driven society but also away from unsustainable fossil fuels as an energy source.

Heterogeneous catalysis is one of the fundamental processes of modern life, being common in industrial refinery and hydrogen vehicles, all the way to the living cell. The dissociation of H2 on Cu(111) is an important benchmark system for studying heterogeneous catalysis, with a large and varied amount…

Metals surfaces form a group of effective catalysts for the reaction of small molecules such as hydrogen (H2).