scholarly journals Pore size dependent cation adsorption in a nanoporous polymer film derived from a plastic columnar phase

2018 ◽  
Vol 54 (68) ◽  
pp. 9521-9524 ◽  
Author(s):  
Subham Bhattacharjee ◽  
Jody A. M. Lugger ◽  
Rint P. Sijbesma
Keyword(s):  
Pore Size ◽  
Polymer Film ◽  
Polymer Films ◽  
Adsorption Properties ◽  
Size And Shape ◽  
Size Dependent ◽  
Columnar Phase ◽  
Nanoporous Polymer Film ◽  
Cation Adsorption

Nanoporous polymer films were fabricated from a plastic columnar phase that showed pore size and shape (whether open or collapsed) dependent cation adsorption properties.

Preparation under High Humidity Conditions of Nanoporous Polymer Film with 80 nm Minimum Pore Size

2010 ◽  
Vol 3 (2) ◽  
pp. 025201 ◽  
Author(s):  
Takatoshi Nishio ◽  
Makoto Kashiwagi ◽  
Koji Miyazaki ◽  
Masayuki Yahiro ◽  
Chihaya Adachi
Keyword(s):  
Pore Size ◽  
Polymer Film ◽  
High Humidity ◽  
Nanoporous Polymer Film

scholarly journals Preparation of Nanoporous Polymer Films for Real-Time Viability Monitoring of Cells

2011 ◽  
Vol 2011 ◽  
pp. 1-6
Author(s):  
Chia-Man Chou ◽  
Tong-You Wade Wei ◽  
Jou-May Maureen Chen ◽  
Wei-Ting Chang ◽  
Chang-Tze Ricky Yu ◽  
...  
Keyword(s):  
Cell Cycle ◽  
Cell Death ◽  
Polymer Film ◽  
Real Time ◽  
Polymer Films ◽  
Cell Seeding ◽  
Biotechnological Applications ◽  
Laser Interference ◽  
Initial Cell ◽  
Nanoporous Polymer Film

We have demonstrated an alternative way to monitor the viability of cells adhered on a nanoporous polymer film in real time. The nanoporous polymer films were prepared by laser interference pattering. During exposure of holographic patterning, the dissolved solvents were phase separated with photocured polymer and the nanopores were created as the solvents evaporated. The diffracted spectra from the nanoporous polymer film responded to each activity of the cell cycle, from initial cell seeding, through growth, and eventual cell death. This cell-based biosensor uses a nanoporous polymer film to noninvasively monitor cell viability and may prove useful for biotechnological applications.

Transfer Technique for Electron Microscopy of Membrance Filter Samples

1974 ◽  
Vol 32 ◽  
pp. 554-555
Author(s):  
Lawrence W. Ortiz ◽  
Bonnie L. Isom
Keyword(s):  
Electron Microscopy ◽  
Electron Microscope ◽  
Pore Size ◽  
Membrane Filters ◽  
Size Dependent

A procedure is described for the quantitative transfer of fibers and particulates collected on membrane filters to electron microscope (EM) grids. Various Millipore MF filters (Millipore AA, HA, GS, and VM; 0.8, 0.45, 0.22 and 0.05 μm mean pore size) have been used with success. Observed particle losses have not been size dependent and have not exceeded 10%. With fibers (glass or asbestos) as the collected media this observed loss is approximately 3%.

scholarly journals Formation of half-period surface relief gratings in azobenzene containing polymer films

2020 ◽  
Vol 126 (9) ◽  
Author(s):  
Joachim Jelken ◽  
Carsten Henkel ◽  
Svetlana Santer
Keyword(s):  
Polymer Film ◽  
Polymer Films ◽  
Surface Relief ◽  
Incident Light ◽  
Glassy State ◽  
Polarized Light ◽  
Half Period ◽  
Polarization Distribution ◽  
Linearly Polarized ◽  
Set Up

Abstract We study the peculiar response of photo-sensitive polymer films irradiated with a certain type of interference pattern where one interfering beam is S-polarized, while the second one is P-polarized. The polymer film, although in a glassy state, deforms following the local polarization distribution of the incident light, and a surface relief grating (SRG) appears whose period is half the optical one. All other types of interference patterns result in the matching of both periods. The topographical response is triggered by the alignment of photo-responsive azobenzene containing polymer side chains orthogonal to the local electrical field, resulting in a bulk birefringence grating (BBG). We investigate the process of dual grating formation (SRG and BBG) in a polymer film utilizing a dedicated set-up that combines probe beam diffraction and atomic force microscopy (AFM) measurements, and permits acquiring in situ and in real-time information about changes in local topography and birefringence. We find that the SRG maxima appear at the positions of linearly polarized light (tilted by 45° relative to the grating vector), causing the formation of the half-period topography. This permits to inscribe symmetric and asymmetric topography gratings with sub-wavelength period, while changing only slightly the polarization of one of the interfering beams. We demonstrate an easy generation of sawtooth profiles (blazed gratings) with adjustable shape. With these results, we have taken a significant step in understanding the photo-induced deformation of azo-polymer films.

Oxidation of Activated Carbon Fibers:  Effect on Pore Size, Surface Chemistry, and Adsorption Properties

1999 ◽  
Vol 11 (12) ◽  
pp. 3476-3483 ◽  
Author(s):  
Christian L. Mangun ◽  
Kelly R. Benak ◽  
Michael A. Daley ◽  
James Economy
Keyword(s):  
Activated Carbon ◽  
Surface Chemistry ◽  
Pore Size ◽  
Carbon Fibers ◽  
Adsorption Properties ◽  
Activated Carbon Fibers

Diverting the phase transition behaviour of adipic acid via mesoporous silica confinement

RSC Advances ◽  
2016 ◽  
Vol 6 (113) ◽  
pp. 111787-111796 ◽  
Author(s):  
Shang Liu ◽  
Guixiang Ma ◽  
Shaolei Xie ◽  
Yongzhong Jia ◽  
Jinhe Sun ◽  
...  
Keyword(s):  
Phase Transition ◽  
Mesoporous Silica ◽  
Pore Size ◽  
Thermal Behaviour ◽  
Adipic Acid ◽  
Size Dependent ◽  
Transition Behaviour

Phase transition regulation was achieved by imbibing adipic acid into mesoporous silica chambers, on the basis of pore size-dependent thermal behaviour.

Effect of Pore Size of Self-Organized Honeycomb-Patterned Polymer Films on Spreading, Focal Adhesion, Proliferation, and Function of Endothelial Cells

2007 ◽  
Vol 7 (3) ◽  
pp. 763-772 ◽  
Author(s):  
Masaru Tanaka ◽  
Aiko Takayama ◽  
Emiko Ito ◽  
Hiroshi Sunami ◽  
Sadaaki Yamamoto ◽  
...  
Keyword(s):  
Endothelial Cells ◽  
Pore Size ◽  
Focal Adhesion ◽  
Polymer Films ◽  
Self Organized ◽  
And Function
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