Surface Interactions in Electromechanical Systems
Faculteit  Science and Engineering 
Jaar  2022/23 
Vakcode  WMPH04505 
Vaknaam  Surface Interactions in Electromechanical Systems 
Niveau(s)  master 
Voertaal  Engels 
Periode  semester I b 
ECTS  5 
Rooster  rooster.rug.nl 
Uitgebreide vaknaam  Surface Interactions in Electromechanical Systems  
Leerdoelen  At the end of the course, the student is able to: 1. Understand the influence of materials on vaccuum generated forces; 2. Understand stability issues if MEMS; 3. Design MEMS to minimize stiction and chaotic motion; 4. Understand how to use MEMS in front line fundamental research. 

Omschrijving  The fundamental nature of the void, or empty space, has exercised philosophers back to ancient Greek times. The startling realisation that has emerged since the birth of modern physics is that the void, that is, the complete absence of any detectable particles or energy is far from empty. This conclusion originated around 1900 from the work of Max Planck and the early pioneers of quantum theory. A consequence of the quantum behaviour of electromagnetic fields is that each field mode contains intrinsic zero point energy when it is not vibrating. The zeropoint energy is not just an arbitrary constant but has real observable consequences. Indeed, two mirrors facing each other in vacuum are mutually attracted to each other by the disturbance of quantum vacuum fluctuations – a phenomenon first predicted in 1948 by the Dutch theoretical physicist Hendrik Casimir. Nevertheless, the last ten years the Casimir field has attracted significant attention and has focused on one hand on observations of the Casimir force in complex geometries and novel materials such as phasechange, nanoparticles, carbon nanotubes, liquids, metamaterials etc. with a view to applications, especially in nanomachines. On the other hand there is a focus on fundamentals such as what the force can tell us about the quantum vacuum, for example, any possible relationship between zeropoint energy and cosmological observations such as dark energy, and departures from Newtonian gravity at submicrons. Topics to cover: Introduction to Casimir physics, Lifshitz theory for Casimir / van der Waals forces between real materials and Thermal effects, Capilary and Electrostatic forces; Influence of optical properties on CasimirLifshitz forces: From attraction to repulsion; Influence of geometrysurface morphology on CasimirLifshitz forces with applications to MEMS actuation, stiction, chaotic motion. 

Uren per week  
Onderwijsvorm 
Hoorcollege (LC), Opdracht (ASM)
(28 LC, 32 ASM, 80 selfstudy) 

Toetsvorm 
Opdracht (AST), Schriftelijk tentamen (WE)
(Final grade=0.6*WE + 0.4*(Average AST)) 

Vaksoort  master  
Coördinator  Prof. Dr. G. Palasantzas  
Docent(en)  Prof. Dr. G. Palasantzas  
Verplichte literatuur 


Entreevoorwaarden  
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