scholarly journals Stable Dropwise Condensation for Enhancing Heat Transfer via the Initiated Chemical Vapor Deposition (iCVD) of Grafted Polymer Films

2013 ◽  
Vol 26 (3) ◽  
pp. 418-423 ◽  
Author(s):  
Adam T. Paxson ◽  
Jose L. Yagüe ◽  
Karen K. Gleason ◽  
Kripa K. Varanasi
Keyword(s):  
Heat Transfer ◽  
Chemical Vapor Deposition ◽  
Polymer Films ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Dropwise Condensation ◽  
Grafted Polymer ◽  
Initiated Chemical Vapor Deposition ◽  
Enhancing Heat Transfer

A Basic Monte Carlo Model of Initiated Chemical Vapor Deposition Using Kinetic Theory

2014 ◽  
Vol 1704 ◽  
Author(s):  
Hayley R. Osman ◽  
Saibal Mitra
Keyword(s):  
Monte Carlo ◽  
Chemical Vapor Deposition ◽  
Polymer Films ◽  
Vapor Deposition ◽  
Monte Carlo Model ◽  
Chemical Vapor ◽  
Reaction Chamber ◽  
Initial Growth ◽  
Time Step ◽  
Initiated Chemical Vapor Deposition

ABSTRACTInitiated Chemical Vapor Deposition (iCVD) is a well-known method for depositing polymers that are used in chemical, biological, and electrical applications. It is a variation of hot filament deposition and can used to produce conformal coatings of polymer films at relatively low reaction temperatures. It is also a solventless technique in which thin polymeric films are deposited by introducing controlled ratios of monomer and initiator gasses into the reaction chamber. Low temperatures in the reaction chamber allow the deposition of polymer films on a wide variety of substrates that include biological substrates.We have simulated the growth of a monolayer of polymer films on two-dimensional surfaces using Monte Carlo simulation. We saw the formation of polymer chains over a time scale on the order of microseconds. We have assumed the substrate to be at room temperature while the reactor pressure close of 800 mTorr.The grid on which we have simulated this polymer growth is represented by a 100x100 matrix, on which a series of specialized functions are executed in each time-step, or iteration. These functions can be divided into three categories: population, translation, and polymerization.The goal of this simulation is to observe the initial growth of the iCVD surface reaction. We have obtained favorable results with the simulation and we are now looking to compare these results with experimental results for initiation growth.

scholarly journals Fundamental nanoscale surface strategies for robustly controlling heterogeneous nucleation of calcium carbonate

2019 ◽  
Vol 7 (29) ◽  
pp. 17242-17247 ◽  
Author(s):  
Junjie Zhao ◽  
Minghui Wang ◽  
Mofoluwaso S. Jebutu ◽  
Minghui Zhu ◽  
Karen K. Gleason
Keyword(s):  
Heat Transfer ◽  
Chemical Vapor Deposition ◽  
Calcium Carbonate ◽  
Robust Control ◽  
High Temperatures ◽  
Vapor Deposition ◽  
Heterogeneous Nucleation ◽  
Chemical Vapor ◽  
Initiated Chemical Vapor Deposition ◽  
Ultrathin Polymer Films

Stable ultrathin polymer films synthesized via initiated chemical vapor deposition enable robust control of heterogeneous nucleation of CaCO3 on metal heat transfer surfaces at high temperatures.

scholarly journals Initiated Chemical Vapor Deposition (iCVD) Functionalized Polylactic Acid–Marine Algae Composite Patch for Bone Tissue Engineering

Polymers ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 186
Author(s):  
Wiebke Reichstein ◽  
Levke Sommer ◽  
Salih Veziroglu ◽  
Selin Sayin ◽  
Stefan Schröder ◽  
...  
Keyword(s):  
Tissue Engineering ◽  
Chemical Vapor Deposition ◽  
Bone Tissue Engineering ◽  
Bone Tissue ◽  
Vapor Deposition ◽  
Marine Algae ◽  
Chemical Vapor ◽  
Human Osteoblasts ◽  
Composite Patch ◽  
Initiated Chemical Vapor Deposition

The current study aimed to describe the fabrication of a composite patch by incorporating marine algae powders (MAPs) into poly-lactic acid (PLA) for bone tissue engineering. The prepared composite patch was functionalized with the co-polymer, poly (2-hydroxyethyl methacrylate-co-ethylene glycol dimethacrylate) (p(HEMA-co-EGDMA)) via initiated chemical vapor deposition (iCVD) to improve its wettability and overall biocompatibility. The iCVD functionalized MAP–PLA composite patch showed superior cell interaction of human osteoblasts. Following the surface functionalization by p(HEMA-co-EGDMA) via the iCVD technique, a highly hydrophilic patch was achieved without tailoring any morphological and structural properties. Moreover, the iCVD modified composite patch exhibited ideal cell adhesion for human osteoblasts, thus making the proposed patch suitable for potential biomedical applications including bone tissue engineering, especially in the fields of dentistry and orthopedy.

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