Glass transition of polymers in bulk, confined geometries, and near interfaces

S Napolitano, E Glynos, NB Tito - Reports on Progress in Physics, 2017 - iopscience.iop.org
When cooled or pressurized, polymer melts exhibit a tremendous reduction in molecular
mobility. If the process is performed at a constant rate, the structural relaxation time of the …

Irreversible adsorption of polymer melts and nanoconfinement effects

S Napolitano - Soft Matter, 2020 - pubs.rsc.org
For almost a decade, growing experimental evidence has revealed a strong correlation
between the properties of nanoconfined polymers and the number of chains irreversibly …

The lifetime of the deviations from bulk behaviour in polymers confined at the nanoscale

S Napolitano, M Wübbenhorst - Nature communications, 2011 - nature.com
Monitoring the impact of annealing on the dynamic glass transition of nanometres-thick
polymer layers provides new insights into the mechanisms behind the tremendous changes …

Intermittent molecular hopping at the solid-liquid interface

MJ Skaug, J Mabry, DK Schwartz - Physical review letters, 2013 - APS
The mobility of molecules on a solid surface plays a key role in diverse phenomena such as
friction and self-assembly and in surface-based technologies like heterogeneous catalysis …

Kinetics of irreversible chain adsorption

C Housmans, M Sferrazza, S Napolitano - Macromolecules, 2014 - ACS Publications
Recent experimental evidence showed a strong correlation between the behavior of
polymers under confinement and the presence of a layer irreversibly adsorbed onto the …

Multiphasic DNA adsorption to silica surfaces under varying buffer, pH, and ionic strength conditions

PE Vandeventer, JS Lin, TJ Zwang… - The Journal of …, 2012 - ACS Publications
Reversible interactions between DNA and silica are utilized in the solid phase extraction
and purification of DNA from complex samples. Chaotropic salts commonly drive DNA …

Three-dimensional tracking of interfacial hopping diffusion

D Wang, H Wu, DK Schwartz - Physical Review Letters, 2017 - APS
Theoretical predictions have suggested that molecular motion at interfaces—which
influences processes including heterogeneous catalysis,(bio) chemical sensing, lubrication …

Single-molecule tracking of polymer surface diffusion

MJ Skaug, JN Mabry, DK Schwartz - Journal of the American …, 2014 - ACS Publications
The dynamics of polymers adsorbed to a solid surface are important in thin-film formation,
adhesion phenomena, and biosensing applications, but they are still poorly understood …

The responses to surface wettability gradients induced by chitosan nanofilms on microtextured titanium mediated by specific integrin receptors

JH Park, CE Wasilewski, N Almodovar… - Biomaterials, 2012 - Elsevier
Microtexture and chemistry of implant surfaces are important variables for modulating
cellular responses. Surface chemistry and wettability are connected directly. While each of …

Single-molecule observation of long jumps in polymer adsorption

C Yu, J Guan, K Chen, SC Bae, S Granick - ACS nano, 2013 - ACS Publications
Single-molecule fluorescence imaging of adsorption onto initially bare surfaces shows that
polymer chains need not localize immediately after arrival. In a system optimized to present …