Publications de Juan José Segura Sugranes

Growth and dissolution of calcite in the presence of adsorbed stearic acid

Francesco Stellacci, Georg Fantner, Kislon Voitchovsky, Blake William Erickson, Maria Ricci, Juan José Segura Sugranes

The interaction of organic molecules with the surface of calcite plays a central role in many geochemical, petrochemical and industrial processes and in biomineralization. Adsorbed organics, typically fatty acids, can interfere with the evolution of calcit ...

American Chemical Society2015

Water adsorption on etched hydrophobic surfaces of L-, D- and DL-valine crystals

Juan José Segura Sugranes

The adsorption of water on etched (001) surfaces of L-, D- and DL-valine crystals has been characterized by atomic force microscopy (AFM) using different operational modes (contact, non-contact and electrostatic) above and below the dew point, the temperat ...

Elsevier2014

Hydrophobic coating of mica by stearic acid vapor deposition

Juan José Segura Sugranes

We report on the preparation of thin films of stearic acid on mica by sublimation in air. We correlate their affinity to water (hydrophobic vs. hydrophilic character) to the morphology of the films as observed by Atomic Force Miscorcopy (AFM). Submonolayer ...

Elsevier Science Bv2014

Surface screening of written ferroelectric domains in ambient conditions

Juan José Segura Sugranes

We have combined Piezoresponse Force Microscopy and Kelvin Probe Force Microscopy (KPFM) to study screening charge dynamics in written domains on PbZr0.2Ti0.8O3 (PZT) thin film surfaces under a controlled environment and at variable temperature. The screen ...

Amer Inst Physics2013

Adsorbed and near surface structure of ionic liquids at a solid interface

Kislon Voitchovsky, Juan José Segura Sugranes

The structure of solid-ionic liquid (IL) interfaces has been characterised with unprecedented clarity by employing a range of atomic force microscopy (AFM) imaging techniques and tip pressures appropriate for the system under study. Soft contact and amplit ...

Royal Society of Chemistry2013

Communication: Growing room temperature ice with graphene

Juan José Segura Sugranes

Water becomes ordered in the form of hexagonal ice at room temperature under controlled humidity conditions upon confinement in the nanometer range between protective graphene sheets and crystalline (111) surfaces with hexagonal symmetry of the alkali eart ...

American Institute of Physics2013

Low-Voltage Self-Assembled Monolayer Field-Effect Transistors on Flexible Substrates

Francesco Stellacci, Kislon Voitchovsky, Juan José Segura Sugranes, Thomas Schmaltz

Self-assembled monolayer field-effect transistors (SAMFETs) of BTBT functionalized phosphonic acids are fabricated. The molecular design enables device operation with charge carrier mobilities up to 10-2 cm 2 V-1 s-1 and for the first time SAMFETs which op ...

Wiley-Blackwell2013