Plasma Polymerized Hydrogel Thin Films for Applications in Sensors and Actuators PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Plasma Polymerized Hydrogel Thin Films for Applications in Sensors and Actuators PDF full book. Access full book title Plasma Polymerized Hydrogel Thin Films for Applications in Sensors and Actuators by Prabhakar A. Tamirisa. Download full books in PDF and EPUB format.
Author: Prabhakar A. Tamirisa
Publisher:
ISBN:
Category : Colloids
Languages : en
Pages :
Get Book Here
Book Description
Plasma polymerization was used to produce thermoresponsive, hydrogel films of N-Isopropylacrylamide (NIPAAm) in a single step. Through variation of reactor conditions such as deposition pressure and substrate temperature, physicochemical properties of the hydrogel films such as crosslink density and thus swelling could be controlled. Chemical bonding structures in plasma polymerized NIPAAm were studied using Fourier transform infrared spectroscopy (FTIR). Contact angle goniometry and quartz crystal microbalance with dissipation monitoring were used to confirm the existence of a hydrophilic-hydrophobic transition in plasma polymerized NIPAAm thin films, analogous to the lower critical solution temperature (LCST) transition in linear, uncrosslinked chains. Hydrogen bonding in NIPAAm thin films was found to control the moisture uptake capacity; films prepared at higher substrate temperatures and lower reactor pressures, and hence believed to possess greater crosslink density, showed the highest moisture uptake capacity in ambient humidity. Free volume characteristics of NIPAAm thin films were studied using Doppler broadening energy spectroscopy (DBES). Furthermore, a novel, electrophoretic procedure was conceived to incorporate biomolecules such as antibodies in plasma polymerized NIPAAm films for use as sensing layers in vapor phase, surface acoustic wave sensors.
Author: Prabhakar A. Tamirisa
Publisher:
ISBN:
Category : Colloids
Languages : en
Pages :
Get Book Here
Book Description
Plasma polymerization was used to produce thermoresponsive, hydrogel films of N-Isopropylacrylamide (NIPAAm) in a single step. Through variation of reactor conditions such as deposition pressure and substrate temperature, physicochemical properties of the hydrogel films such as crosslink density and thus swelling could be controlled. Chemical bonding structures in plasma polymerized NIPAAm were studied using Fourier transform infrared spectroscopy (FTIR). Contact angle goniometry and quartz crystal microbalance with dissipation monitoring were used to confirm the existence of a hydrophilic-hydrophobic transition in plasma polymerized NIPAAm thin films, analogous to the lower critical solution temperature (LCST) transition in linear, uncrosslinked chains. Hydrogen bonding in NIPAAm thin films was found to control the moisture uptake capacity; films prepared at higher substrate temperatures and lower reactor pressures, and hence believed to possess greater crosslink density, showed the highest moisture uptake capacity in ambient humidity. Free volume characteristics of NIPAAm thin films were studied using Doppler broadening energy spectroscopy (DBES). Furthermore, a novel, electrophoretic procedure was conceived to incorporate biomolecules such as antibodies in plasma polymerized NIPAAm films for use as sensing layers in vapor phase, surface acoustic wave sensors.
Author: Gabor Harsanyi
Publisher: Routledge
ISBN: 1351423568
Category : Medical
Languages : en
Pages : 464
Get Book Here
Book Description
Polymer films now play an essential and growing role in sensors. Recent advances in polymer science and film preparation have made polymer films useful, practical and economical in a wide range of sensor designs and applications. Further, the continuing miniaturization of microelectronics favors the use of polymer thin films in sensors. This new book is the first comprehensive presentation of this technology. It covers both scientific fundamentals and practical engineering aspects. Included is an extensive survey of all types of sensors and applications. The very detailed table of contents in the next pages provides full information on content. More than 200 schematics illustrate a wide variety of sensor structures and their function.
Author: Hynek Biederman
Publisher: World Scientific
ISBN: 1860944671
Category : Technology & Engineering
Languages : en
Pages : 391
Get Book Here
Book Description
Plasma Polymer Films examines the current status of the deposition and characterization of fluorocarbon-, hydrocarbon- and silicon-containing plasma polymer films and nanocomposites, with plasma polymer matrix. It introduces plasma polymerization process diagnostics such as optical emission spectroscopy (OES, AOES), and describes special deposition techniques such as atmospheric pressure glow discharge. Important issues for applications such as degradation and stability are treated in detail, and structural characterization, basic electrical and optical properties and biomedical applications are discussed.
Author: Gerald Gerlach
Publisher: Springer Science & Business Media
ISBN: 3540756450
Category : Technology & Engineering
Languages : en
Pages : 278
Get Book Here
Book Description
Hydrogels are a fascinating class of polymers which show an immense ability of swelling under the influence of temperature, pH value or concentrations of different species in aqueous solutions. The volume change can amount up to several hundred percent. This unique behaviour is already used in such applications like disposable diapers, contact lenses or drug-delivery systems. The ability to perform mechanical work has been shifted the technical interest more and more towards sensors and actuators exploiting the thermo-chemo-mechano-electrical coupling within hydrogels. The accuracy requirements for such devices are much more demanding than for previous applications. Therefore, a deep knowledge of both the material and the functional properties of hydrogel sensors and actuators is needed. The monograph describes state of the art and recent developments for these materials in sensor and actuator technology.
Author: Gary W. Hunter
Publisher: The Electrochemical Society
ISBN: 1566776082
Category : Science
Languages : en
Pages : 73
Get Book Here
Book Description
The papers included in this issue of ECS Transactions were originally presented in the symposium ¿Sensors, Actuators, and Microsystems General Session¿, held during the 211th meeting of The Electrochemical Society, in Chicago, IL, from May 6 to 11, 2007.
Author: H. Michelle Grandin
Publisher: John Wiley & Sons
ISBN: 0470536500
Category : Technology & Engineering
Languages : en
Pages : 428
Get Book Here
Book Description
A comprehensive overview of smart and responsive surfaces in biotechnology and their applications A wave of recent advances in cell biology, biophysics, chemistry, and materials science has enabled the development of a new generation of smart biomaterials. Intelligent Surfaces in Biotechnology: Scientific and Engineering Concepts, Enabling Technologies, and Translation to Bio-Oriented Applications provides readers with a comprehensive overview of surface modifications and their applications, including coverage of the physico-chemical properties, characterization methods, smart coating technologies, and demonstration of performance in vitro and in vivo. The first part of the book covers applications in the fields of biosensing and biodiagnostics, while the second part focuses more on coatings for medical devices, drug delivery, and tailored cell-surface interactions. The book explores intelligent surface applications such as tissue engineering, drug targeting and delivery, wound healing and anti-infection strategies, biosensors, nanopatterning, and bioinspired design of novel responsive materials and multifunctional surfaces. Designed to aid scientists and engineers in understanding the rapidly developing field of biofunctional surfaces, Intelligent Surfaces in Biotechnology is an edited volume with each chapter written by a respected expert and featuring examples taken from the most state-of-the-art developments in the discipline. Cover Image: Design concept for a diagnostic microfluidic system based on responsive polymer- and antibody-conjugated nanobeads (see Chapter 2 of this book, Figure 2.5; reproduced by permission from the Royal Society of Chemistry).
Author: Li-Qiang Chu
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
Get Book Here
Book Description
Plasma polymerization technique is widely accepted as an effective and simple method for the preparation of functional thin films. By careful choice of precursors and deposition parameters, plasma polymers bearing various functional groups could be easily obtained. In this work, I explored the deposition of four kinds of plasma polymerised functional thin films, including the protein-resistant coatings, the thermosensitive coatings, as well as, the coatings bearing amine or epoxide groups. The deposited plasma polymers were characterized by various techniques, such as X-ray photoelectron spectroscopy, atom force microscopy, Fourier transform infrared spectroscopy, surface plasmon resonance spectroscopy, optical waveguide spectroscopy, and so on. As expected, high retention of various functional groups could be achieved either at low plasma input power or at low duty cycle (duty cycle = Ton/(Ton+Toff)). The deposited functional thin films were found to contain some soluble materials, which could be removed simply by extraction treatment. Besides the thermosentive plasma polymer (see Chapter 9), other plasma polymers were used for developing DNA sensors. DNA sensing in this study was achieved using surface plasmon enhanced fluorescence spectroscopy. The nonfouling thin films (i.e., ppEO2, plasma polymerization of di(ethylene glycol) monovinyl ether) were used to make a multilayer protein-resistant DNA sensor (see Chapter 5). The resulted DNA sensors show good anti-fouling properties towards either BSA or fibrinogen. This sensor was successfully employed to discriminate different DNA sequences from protein-containing sample solutions. In Chapter 6, I investigated the immobilization of DNA probes onto the plasma polymerized epoxide surfaces (i.e., ppGMA, plasma polymerization of glycidyl methacrylate). The ppGMA prepared at a low duty cycle showed good reactivity with amine-modified DNA probes in a mild basic environment. A DNA sensor based on the ppGMA was successfully.
Author:
Publisher:
ISBN:
Category : Plasma polymerization
Languages : en
Pages :
Get Book Here
Book Description
Author: Rajendra Kumar
Publisher: LAP Lambert Academic Publishing
ISBN: 9783848400140
Category :
Languages : en
Pages : 64
Get Book Here
Book Description
The objective of the book is to prepare polyaniline thin films through plasma polymerization technique and their electrical & optical characterization.It is also aimed to investigate their technological applications for detection of hazardous gas analyte such as NO2.To achieve this, we investigated the preparation of aniline thin film via plasma polymerization technique involving such as a brush-shape atmospheric pressure plasma source, low-pressure direct current(DC)plasma polymerization, and low-pressure radio frequency (RF)plasma deposition.Atmospheric pressure plasma brush was used to examine its sterilization and modification efficiencies of low-temperature plasma process without vacuum limitation required in traditional low-pressure plasma systems.The RF plasma deposition was produced on glass substrate for improving their scratch-resistance in optical applications. The conductivity of PANI thin films was also studied by their response characteristics after exposure to nitrogen dioxide.The results obtained has showed that the PANI thin film has tremendous sensitivity towards nitrogen dioxide vapors and shows a maximum response for a voltage of 3.5 volts applied to the sensor.
