Professor John SADER


School of Mathematics and Statistics

  • Room: G22
  • Building: Peter Hall Building
  • Campus: Parkville

Research Interests

  • Atomic Force Microscopy
  • Colloidal interactions
  • Continuum Modelling
  • Dynamic force spectroscopy
  • Nanocrystal mechanics
  • Plasticity and elasticity

Research Groups

Recent Publications

  • Melanie Delapierre, D. Chakraborty, J. Sader, Sergio Pellegrino. Wrinkling of transversely loaded spinning membranes. International Journal of Solids and Structures, 139, 163-173, 2018. doi: 10.1016/j.ijsolstr.2018.01.031.

  • J. Sader, M Selim Hanay, A. Neumann, Michael L Roukes. Mass Spectrometry Using Nanomechanical Systems: Beyond the Point-Mass Approximation.. Nano letters, 18, 1608-1614, 2018. doi: 10.1021/acs.nanolett.7b04301.

  • C Yi, MN Su, P Dongare, D. Chakraborty, YY Cai, DM Marolf, RN Kress, B Ostovar, LJ Tauzin, F Wen, WS Chang, M Jones, J. Sader, NJ Halas, S Link. Polycrystallinity of Lithographically Fabricated Plasmonic Nanostructures Dominates Their Acoustic Vibrational Damping.. Nano letters, 3494-3501, 2018. doi: 10.1021/acs.nanolett.8b00559.

  • Chongyue Yi, Pratiksha D Dongare, Man-Nung Su, Wenxiao Wang, Debadi Chakraborty, Fangfang Wen, Wei-Shun Chang, J. Sader, Peter Nordlander, Naomi J Halas, Stephan Link. Vibrational coupling in plasmonic molecules. Proceedings of the National Academy of Sciences of the United States of America, 114, 11621-11626, 2017. doi: 10.1073/pnas.1712418114.

  • Jesse F Collis, Debadi Chakraborty, John E Sailer, J. Sader. Autonomous propulsion of nanorods trapped in an acoustic field. Journal of Fluid Mechanics, 825, 29-48, 2017. doi: 10.1017/jfm.2017.381.

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Extra Information

My research efforts cover a wide range of fields, and focus on both pure and applied research in the broad areas of colloid and surface science, elasticity, electromagnetic wave theory, rheology, fibre optics, electrostatics, fluid mechanics, granular mechanics, plasticity, atomic force microscopy and nanoscience. This stems from my multidisciplinary background as a trained electrical engineer and subsequent research focus in continuum mechanics. I am particularly interested in investigating problems of practical relevance, and work closely with leading local and internationally based experimentalists. As such, much of my work is conducted in parallel to experimental measurements, which enables the validity and practical relevance of the models to be verified. This approach has led to the commercial implementation of my work on the international market. A sample of my recent research efforts include development of models for the dynamic response of nanoparticles under femtosecond laser excitation, failure of plastic materials under gravity, investigation of fundamental properties of atomic force microscope cantilevers and developments of experimental methods for their calibration, and models for the dynamic behaviour of elastic beams immersed in fluids.

Current Postgraduate Supervision

Name Thesis title
Jesse COLLIS "Asymptotics of the Boltzmann equation for hard spheres with applications to NEMS devices"
Naijian (Eric) SHEN

Past Postgraduate Supervision

Name Thesis title
Ellie BUTTON "Thin film flows of surfactant solutions"
Chris GREEN "Dynamics of atomic force microscope cantilever beams in fluids"
Michael LACHUT "Foundations of dynamic surface stress measurements"
Chien-Hua (Kevin) LIN "Theoretical foundations of ultra fast laser measurement of the mechanical properties of nanoparticles"
Jason NASSIOS "Kinetic theory of nanoscale devices."
James WOODCOCK "On Turbulent Flow of Incompressible Fluids."
Ying Wan YAP "A study of rarefied gas dynamics with various molecular models"

Current MSc Students

Name Project title
Miguel Carlo LONTOC

Past MSc Students

Name Project title
Catherine BROWNE "Oscillations of a cantilever in a fluid"
Ellie BUTTON "The Dynamics of Water Bells"
Juwen HO "The Wiener-Hopf method and its application to fluids"
Jason NASSIOS "Kinetic Theory and the BGK Equation: Gas Dynamics for the Nanoscale"
Michael NEESON
Naijian (Eric) SHEN
Michelle WILLCOX
Ying Wan YAP

Recent Grant History

Year(s) Source Type Title
2013 - 2015 ARC Discovery Quantum dot energy transfer: the chemistry of blinking
2010 - 2012 ARC Discovery Repulsive van der Waals forces and Brownian ratchet motors: manipulating thermal and quantum Fluctuations
2009 - 2011 ARC Discovery The Mechanics of Nanoscale Devices
2005 - 2009 ARC Discovery Nanotribiology - The Chemical Rolling Resistance of Single Nanocrystals


  • Academic Board member
  • Director of Research


  • Executive Committee
  • Research and Industry Committee
  • Strategic Planning Committee