Dr Andrew Maiden

PhD, MEng

Department of Electronic and Electrical Engineering

Director of Programme Delivery

Senior Lecturer Computational Holography

Semiconductor Materials and Devices Research Group

Headshot of Andy Maiden
Profile picture of Headshot of Andy Maiden
a.maiden@sheffield.ac.uk
+44 114 222 5181

Full contact details

Dr Andrew Maiden
Department of Electronic and Electrical Engineering
Sir Frederick Mappin Building
Mappin Street
Sheffield
S1 3JD
Profile

I’m interested in computational optics – enhancing optical systems such as microscopes, cameras or projectors with computer code.

My interest began with my PhD at Durham University, where I used computer modelling of the way light propagates to design digital holograms.

The holograms were printed out and projected a 3D pattern of circuitry when illuminated with a laser. We used these projected patterns to expose photoresist for the manufacture of volumetric integrated circuits and 3D antennas.

I spent a year living in the Lake District (where I grew up) after my PhD. I got to indulge my passion for outdoor sports – rock climbing, fell running and triathlon – whilst I was there, so when I decided to return to academia Sheffield was a natural choice, being a very outdoors city with excellent Universities.

I moved to Sheffield to work with Professor John Rodenburg and was lucky enough to join him in the pioneering days of a computational optics technique called ptychography (pronounced tie-cog- ra-fee).

Ptychography uses diffraction pattern measurements to enhance microscopes. It realises ‘perfect’ imaging, where the image of a microscopic specimen it recreates is an exact copy of how that specimen interacts with a beam of light.

I left Sheffield University for a brief spell to work with a spin-out company on commercialisation of ptychography-enhanced microscopes. I missed the freedom of the academic environment, and returned as a Lecturer after a couple of years.

As well as my continuing research in computational optics, I now teach analogue electronics to our third years.

Qualifications
  • PhD, University of Durham 2005
  • MEng (Electronic & Electrical Engineering), University of Birmingham 2001
Research interests
  • Coherent Diffractive Imaging (CDI)
  • Ptychography
  • Computer-generated holography
  • Phase imaging in the Transmission Electron Microscope (TEM)
  • Inverse problems
  • Image processing
Publications

Journal articles

Chapters

Conference proceedings papers

  • Zhang Z & Maiden AM (2019) A comparison of ptychographic phase retrieval algorithms. Quantitative Phase Imaging V, 2 February 2019 - 7 February 2019. RIS download Bibtex download
  • Li P & Maiden A (2017) Optical ptychography with extended depth of field. Journal of Physics: Conference Series, Vol. 902 (pp 012015-012015) View this article in WRRO RIS download Bibtex download
  • Li P & Maiden A (2017) Ptychography for strongly scattering 3D objects. Optics in the Life Sciences Congress, 2017. RIS download Bibtex download
  • Rodenburg JM, Cao S & Maiden AM (2016) OPTICAL ARRANGEMENTS FOR PHASE-SENSITIVE IMAGING USING ELECTRON PTYCHOGRAPHY. RECENT TRENDS IN CHARGED PARTICLE OPTICS AND SURFACE PHYSICS INSTRUMENTATION (pp 60-61) RIS download Bibtex download
  • Maiden AM & Li P (2015) The Remarkably Flexible Ptychographic Data Set. Optics InfoBase Conference Papers RIS download Bibtex download
  • Maiden A (2014) Super-resolved Ptychographic Imaging. Microscopy and Microanalysis, Vol. 20(S3) (pp 372-373) RIS download Bibtex download
  • Maiden AM (2014) Three-dimensional Ptychography. Classical Optics 2014, 2014. RIS download Bibtex download
  • Rodenburg JM, Maiden AM & Humphry MJ (2010) TRANSMISSION AND REFLECTION MICROSCOPY WITHOUT LENSES. RECENT TRENDS IN CHARGED PARTICLE OPTICS AND SURFACE PHYSICS INSTRUMENTATION (pp 61-62) RIS download Bibtex download
  • Williams GL, McWilliam RP, Toriz-Garcia J, Curry R, Maiden A, Seed NL, Purvis A & Ivey PA (2008) A photolithographic process for grossly non-planar substrates - art. no. 69212E. EMERGING LITHOGRAPHIC TECHNOLOGIES XII, PTS 1 AND 2, Vol. 6921 (pp E9212-E9212) RIS download Bibtex download
  • McWilliam R, Johnson S, Maiden A, Purvis A, Luke Seed N, Williams GL & Ivey PA (2006) Non-planar photolithography using digital holograms. Optics InfoBase Conference Papers RIS download Bibtex download
  • Ivey P, McWilliam R, Maiden A, Williams G, Purvis A & Seed L (2006) Photolithography on three dimensional substrates. Proceedings - Electronic Components and Technology Conference, Vol. 2006 (pp 283-288) RIS download Bibtex download
  • Williams GL, McWilliam R, Maiden A, Purvis A, Ivey PA & Seed NL (2005) Photolithography on grossly non-planar substrates. Proceedings of the Seventh IEEE CPMT Conference on High Density Microsystem Design, Packaging and Failure Analysis (HDP'05) (pp 442-446) RIS download Bibtex download

Patents

  • Maiden A (2015) Calibration of a probe in ptychography. US8942449 (US). Appl. 27 Jan 2015. RIS download Bibtex download
  • Maiden A (2014) Provision of image data. US8908910 Appl. 09 Dec 2014. RIS download Bibtex download
  • Maiden A (2014) Method and apparatus for providing image data. US8917393 Appl. 23 Dec 2014. RIS download Bibtex download
  • McWilliam RP, Maiden A, Johnson S, Purvis A, Ivey PA, Seed NL & Williams GL () Holographic Lithography. GB2419501 (UK). Appl. 01 Jan 1970. RIS download Bibtex download

Preprints

Teaching activities
  • EE335 (integrated electronics)
  • EEE6231 (optical imaging systems)
  • Postgraduate Research Admissions Tutor
Research students
Student Degree Status Primary/Secondary
Cao S PhD Graduated Secondary