Philipp Gutfreund

My main research interest is devoted to the microscopic structure and dynamics of polymeric liquids in out-of-equilibrium or in confinement. I use mainly Neutron Scattering techniques for my investigations with an emphasis on thein situcombination of shear/rheology and neutron scattering. I also work on the development of the reflectometry technique.

Some recent examples of my reasearch topics are:

• Structure of polymer brushes underin situshear load.
  • “Polymer Brush Collapseunder Shear Flow",Macromolecules50, 1215 (2017).
  • “Shear deformation of low-density polymer brushes in a good solvent”,Phys. Rev. E98, 03251 (2018).
• Single-chain structure and dynamics of entangled polymers during non-Newtonian stationary flow.
  • "The viscoelastic signature underpinning polymer deformation under shear flow”,Soft Matter15, 371(2019).
  • "Direct Measurement of Topological Interactions In Polymers under Shear Using Neutron Spin Echo Spectroscopy",Scientific Reports9,2823 (2019).
  • ”Dynamical structure of entangled polymers simulated under shear flow”,J. Chem. Phys.149, 074901 (2018).
• Development of Neutron Reflectometry.
  • "Towards generalized data reduction on a chopper‐based time‐of-flight neutron reflectometer”,J. Appl. Cryst.51, 606 (2018).
  • “Recent upgrades of the neutron reflectometer D17 at ILL”,J. Appl. Cryst.51, 249 (2018).
• Analysis of off-specular Neutron Reflectometry.
  • “Överlåtaren: a fast way to transfer and orthogonalize two-dimensional off-specular reflectivity data”,J. Appl. Cryst.49, 2091 (2016).
  • “Combined specular and off-specular reflectometry: elucidating the complex structure of soft buried interfaces”,J. Appl. Cryst.54, 924 (2021).
  • “2D reflectometry for the investigation of polymer interfaces: off-specular neutron scattering”,J. Phys.: Condens. Matter33, 364002 (2021).

• "Interfaces" satellite workshop to the ILL & ESS Europeasn user meeting, October 10-12, 2018, Grenoble, France.