Ben Cook

Experience

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  San Tai Middle School China

  Aug 2004 - Jun 2005

  English Teacher

  Taught English to all ages (mainly 14-15). Creating lesson plans and syllabus under guidance from the head of English

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  DHL

  Jul 2005 - Jul 2006

  Finance Clerk

  On top of my duties dealing with invoices and shipping orders, I wrote software to automate a number of processes.

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  Max Planck Institute for Biophysical Chemistry

  Jan 2006 - Jan 2006

  Masters Student

  STimulated Emission Depletion microscopy (for example http://en.wikipedia.org/wiki/STED_microscopy )Working under Nobel laureate Stefan W. Hell building and testing a super resolution optical microscope• Spatially and temporally synchronised two ultra-fast lasers.• Pulse shaped (spatial and temporal) ultra-fast laser.• Aligned and used optical fibres.• Built fluorescence confocal and wide field microscope

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  TU Delft

  Feb 2007 - Aug 2011

  PhD Researcher / Junior Scientist - PhD

  ---- Electron Sources for Microscopy --My PhD has covered many topics, including theory, experimental and simulation work. I arranged my own topics and direction, supervising bachelors and masters students for projects of my own design. Details• Developed the analytical theory and numerically calculated brightness of a combined thermal, field, photo electron source.• Built experimental set up to focus and image laser on sharp tip (field emitter) in ultra-high vacuum.• Performed ray tracing of electron sources to find (approximate) stochastic Coulomb interactions.• N-Body/Monte Carlo ray tracing of electron sources to determine Coulomb interactions(using GPT, C/C++, and Matlab for data analysis).• Designed (Concept and RF electronics) and tested miniature MEMs GHz electron blanker/chopper, for ultra-fast electron microscopy.• Used SEM and FIB to image/ modify MEMs GHz blanker.• Ray tracing and analytical equations to determine aberrations of GHz blanker.• Reviewed electron guns for ultra-fast electron microscopy.PublicationsImproving the energy spread and brightness of thermal-field (Schottky) emitters with PHAST- PHoto Assisted Schottky Tip. Ultramic. 109, 5, 403-412, 2009.Statistical Coulomb Interactions in PHoto Assisted Schottky Emission- (PHASE)- Proceeding of IVESC 2008 (available on request)Brightness limitations of cold field emitters caused by Coulomb interactions. J. Vac. Sci. Technol. B 28,6, Nov/Dec 2010The influence of gun design on Coulomb-interactions in a field emission gun. Accepted for publication in J.Vac Sci. Technol. B -(co-author)Short PublicationsStatistical Coulomb Interactions in Cold Field Emitters Proceedings of IVNC 2011Stochastic Coulomb interactions limitation to brightness of electron sources Proceedings of IVESC, 2010 -(co-author) PatentsUltra-Fast Beam Blanker (Beam Blanker for Interrupting a Beam of Charged Particle) App. No. 61/390,729. 2010 Weniger anzeigen

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  Expat Project Team Delft

  Jan 2010 - Jan 2011

  Advisor

  Member of local government think tank for ex-pat issues

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  Applied Materials

  Apr 2012 - now

  Senior Applied Physicist / Team Leader

  Design electron microscope colulmns for the semiconductor industry