scholarly journals Characterizing the Distribution of Nonylphenol Ethoxylate Surfactants in Water-Based Pressure-Sensitive Adhesive Films using Atomic-Force and Confocal Raman Microscopy

2008 ◽  
Vol 112 (38) ◽  
pp. 11907-11914 ◽  
Author(s):  
Guizhen H. Xu ◽  
Jinping Dong ◽  
Jiguang Zhang ◽  
Steven J. Severtson ◽  
Carl J. Houtman ◽  
...  
Keyword(s):  
Raman Microscopy ◽  
Confocal Raman Microscopy ◽  
Pressure Sensitive Adhesive ◽  
Nonylphenol Ethoxylate ◽  
Pressure Sensitive ◽  
Atomic Force ◽  
Water Based ◽  
Confocal Raman

Surface Enrichment by Conventional and Polymerizable Sulfated Nonylphenol Ethoxylate Emulsifiers in Water-Based Pressure-Sensitive Adhesive

2013 ◽  
Vol 52 (25) ◽  
pp. 8616-8621 ◽  
Author(s):  
Jilin Zhang ◽  
Yuxi Zhao ◽  
Matthew R. Dubay ◽  
Steven J. Severtson ◽  
Larry E. Gwin ◽  
...  
Keyword(s):  
Surface Enrichment ◽  
Pressure Sensitive Adhesive ◽  
Nonylphenol Ethoxylate ◽  
Pressure Sensitive ◽  
Water Based

scholarly journals Imaging of surface acoustic waves on GaAs using 2D confocal Raman microscopy and atomic force microscopy

2021 ◽  
Vol 118 (3) ◽  
pp. 031602
Author(s):  
Brian Douglas Rummel ◽  
Leonid Miroshnik ◽  
Marios Patriotis ◽  
Andrew Li ◽  
Talid R. Sinno ◽  
...  
Keyword(s):  
Atomic Force Microscopy ◽  
Acoustic Waves ◽  
Surface Acoustic Waves ◽  
Raman Microscopy ◽  
Confocal Raman Microscopy ◽  
Force Microscopy ◽  
Atomic Force ◽  
Confocal Raman

Single Layer Graphene for Estimation of Axial Spatial Resolution in Confocal Raman Microscopy Depth Profiling

2018 ◽  
Vol 91 (1) ◽  
pp. 1049-1055 ◽  
Author(s):  
Carol Korzeniewski ◽  
Jay P. Kitt ◽  
Saheed Bukola ◽  
Stephen E. Creager ◽  
Shelley D. Minteer ◽  
...  
Keyword(s):  
Spatial Resolution ◽  
Depth Profiling ◽  
Single Layer ◽  
Raman Microscopy ◽  
Single Layer Graphene ◽  
Confocal Raman Microscopy ◽  
Layer Graphene ◽  
Confocal Raman

scholarly journals Real-Time Drug Release Imaging From Nanocomposite Drug and Polymer Coatings

2008 ◽  
Vol 2 (2) ◽  
Author(s):  
Jinping Dong ◽  
Greg Haugstad ◽  
Chris Frethem ◽  
John Foley ◽  
Bob Hoerr ◽  
...  
Keyword(s):  
Drug Release ◽  
Real Time ◽  
Polymer Coatings ◽  
Raman Microscopy ◽  
Prolonged Release ◽  
Confocal Raman Microscopy ◽  
Release Process ◽  
Force Microscopy ◽  
Confocal Raman ◽  
Model Drug

The ElectroNanospray process (Nanocopoeia, Inc) transforms drugs and polymers into many nanoscale material states including powders, liquids, encapsulated particles, and coatings. This allows application of polymers and drugs to the surface of medical devices such as coronary stents in a single-stage process. A model drug delivery system consisting of a polymer matrix (arborescent polyisobutylene-polystyrene, or arbIBS) and either dexamethasone or sirolimus was studied by various characterization techniques. Modification of ElectroNanospray process parameters resulted in surface coatings with rich morphologies that are revealed by SEM, Atomic Force Microscopy (AFM) and Confocal Raman Microscopy were employed to monitor the drug release process in situ, through which the mechanism of the drug-eluting process may be proposed. A Confocal Raman microscope fitted with underwater objective was used to image arbIBS∕drug films incubated in phosphate-buffered saline over 12h and at various film depths. Drug migrated from more concentrated areas into the surrounding polymer and toward the surface, beginning as early as 5min after placing the sample in buffer and continuing throughout the 12h period. High drug levels remained in the more concentrated areas at the end of incubation, suggesting the potential for prolonged release. SEM and AFM images taken from samples post incubation showed the appearance of nanoscale pores ∼100nm in diameter in areas corresponding in size and distribution to the Confocal Raman planar image areas of increased drug concentration. Confocal Raman microscopy offers a powerful new technique for demonstrating real-time drug release from therapeutic medical device coatings.

scholarly journals Label-Free Live-Cell Imaging with Confocal Raman Microscopy

2012 ◽  
Vol 102 (2) ◽  
pp. 360-368 ◽  
Author(s):  
Katharina Klein ◽  
Alexander M. Gigler ◽  
Thomas Aschenbrenner ◽  
Roberto Monetti ◽  
Wolfram Bunk ◽  
...  
Keyword(s):  
Live Cell Imaging ◽  
Cell Imaging ◽  
Raman Microscopy ◽  
Live Cell ◽  
Confocal Raman Microscopy ◽  
Label Free ◽  
Confocal Raman
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