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Electrospun Nanofibers

Electrospun Nanofibers
A Book

by Mehdi Afshari

  • Publisher : Woodhead Publishing
  • Release : 2016-09-13
  • Pages : 648
  • ISBN : 0081009119
  • Language : En, Es, Fr & De
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Electrospun Nanofibers covers advances in the electrospinning process including characterization, testing and modeling of electrospun nanofibers, and electrospinning for particular fiber types and applications. Electrospun Nanofibers offers systematic and comprehensive coverage for academic researchers, industry professionals, and postgraduate students working in the field of fiber science. Electrospinning is the most commercially successful process for the production of nanofibers and rising demand is driving research and development in this field. Rapid progress is being made both in terms of the electrospinning process and in the production of nanofibers with superior chemical and physical properties. Electrospinning is becoming more efficient and more specialized in order to produce particular fiber types such as bicomponent and composite fibers, patterned and 3D nanofibers, carbon nanofibers and nanotubes, and nanofibers derived from chitosan. Provides systematic and comprehensive coverage of the manufacture, properties, and applications of nanofibers Covers recent developments in nanofibers materials including electrospinning of bicomponent, chitosan, carbon, and conductive fibers Brings together expertise from academia and industry to provide comprehensive, up-to-date information on nanofiber research and development Offers systematic and comprehensive coverage for academic researchers, industry professionals, and postgraduate students working in the field of fiber science

Fundamentals of Electrospinning & Electrospun Nanofibers

Fundamentals of Electrospinning & Electrospun Nanofibers
A Book

by Anonim

  • Publisher : Unknown Publisher
  • Release : 2021
  • Pages : 329
  • ISBN : 9781605951607
  • Language : En, Es, Fr & De
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An Introduction to Electrospinning and Nanofibers

An Introduction to Electrospinning and Nanofibers
A Book

by Seeram Ramakrishna

  • Publisher : World Scientific
  • Release : 2005
  • Pages : 382
  • ISBN : 9812567615
  • Language : En, Es, Fr & De
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The research and development of nanofibers has gained much prominence in recent years due to the heightened awareness of its potential applications in the medical, engineering and defense fields. Among the most successful methods for producing nanofibers is the electrospinning process. In this timely book, the areas of electrospinning and nanofibers are covered for the first time in a single volume. The book can be broadly divided into two parts: the first comprises descriptions of the electrospinning process and modeling to obtain nanofibers while the second describes the characteristics and applications of nanofibers. The material is aimed at both newcomers and experienced researchers in the area.

Synthesis and Applications of Electrospun Nanofibers

Synthesis and Applications of Electrospun Nanofibers
A Book

by Ramazan Asmatulu,Waseem S. Khan

  • Publisher : Elsevier
  • Release : 2018-10-12
  • Pages : 306
  • ISBN : 0128139153
  • Language : En, Es, Fr & De
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Synthesis and Applications of Electrospun Nanofibers examines processing techniques for nanofibers and their applications in a variety of industry sectors, including energy, agriculture and biomedicine. The book gives readers a thorough understanding of both electrospinning and interfacial polymerization techniques for their production. In addition, the book explore the use of nanofibers in a variety of industry sectors, with particular attention given to nanofibers in medicine, such as in drug and gene delivery, artificial blood vessels, artificial organs and medical facemasks, and in energy and environmental applications. Specific topics of note include fuel cells, lithium ion batteries, solar cells, supercapacitors, energy storage materials, sensors, filtration materials, protective clothing, catalysis and electromagnetic shielding. This book will serve as an important reference resource for materials scientists, engineers and biomedical scientists who want to learn more on the uses of nanofibers. Describes a variety of techniques for producing nanofibers Shows how nanofibers are used in a range of industrial sectors, including illustrative case studies Discusses the pros and cons of using different fabrication techniques to produce nanofibers

Electrospun Nanofibers for Energy and Environmental Applications

Electrospun Nanofibers for Energy and Environmental Applications
A Book

by Bin Ding,Jianyong Yu

  • Publisher : Springer Science & Business Media
  • Release : 2014-04-10
  • Pages : 525
  • ISBN : 3642541607
  • Language : En, Es, Fr & De
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This book offers a comprehensive review of the latest advances in developing functional electrospun nanofibers for energy and environmental applications, which include fuel cells, lithium-ion batteries, solar cells, supercapacitors, energy storage materials, sensors, filtration materials, protective clothing, catalysis, structurally-colored fibers, oil spill cleanup, self-cleaning materials, adsorbents, and electromagnetic shielding. This book is aimed at both newcomers and experienced researchers in the field of nanomaterials, especially those who are interested in addressing energy-related and environmental problems with the help of electrospun nanofibers. Bin Ding, PhD, and Jianyong Yu, PhD, are both Professors at the College of Materials Science and Engineering, Donghua University, China.

Electrospun Nanofibers for Biomedical Applications

Electrospun Nanofibers for Biomedical Applications
A Book

by Albino Martins,Rui L. Reis,Nuno M. Neves

  • Publisher : MDPI
  • Release : 2020-05-29
  • Pages : 308
  • ISBN : 3039287745
  • Language : En, Es, Fr & De
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Electrospinning is a versatile and effective technique widely used to manufacture nanofibrous structures from a diversity of materials (synthetic, natural or inorganic). The electrospun nanofibrous meshes’ composition, morphology, porosity, and surface functionality support the development of advanced solutions for many biomedical applications. The Special Issue on “Electrospun Nanofibers for Biomedical Applications” assembles a set of original and highly-innovative contributions showcasing advanced devices and therapies based on or involving electrospun meshes. It comprises 13 original research papers covering topics that span from biomaterial scaffolds’ structure and functionalization, nanocomposites, antibacterial nanofibrous systems, wound dressings, monitoring devices, electrical stimulation, bone tissue engineering to first-in-human clinical trials. This publication also includes four review papers focused on drug delivery and tissue engineering applications.

Electrospun Nanofibers and Their Applications in Transparent Electrodes

Electrospun Nanofibers and Their Applications in Transparent Electrodes
A Book

by Tianda He

  • Publisher : Unknown Publisher
  • Release : 2014
  • Pages : 38
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Electrospinning is a versatile tool to fabricate polymer nanofibers. It is over other techniques due to the low cost, fast speed, simple procedures and ambient operation conditions. It is the most high-throughput technique to produce fibers with nanometer range diameters. The electrospun insulate polymer fibers can be converted to conductive materials by thermal annealing, doping or patterning, which provides alternative ways to fabricate transparent electrode. The commercial transparent electrodes, which have both good conductivity and considerable transparency, are made of indium-tin-oxide (ITO). It plays essential role in the many optoelectronic devices such as solar cells, displays and touch screens. However, ITO is expensive and brittle, limiting their usage in flexible electronics. In this research, conductive metal films are patterned into transparent metal nanowire networks by using electrospun fibers as a mask. Both the transmittance and sheet resistance of the metal nanowires based electrode out-perform commercial indium doped tin oxide (ITO) electrodes. The metal nanowire based transparent electrodes were fabricated on both rigid glass and flexible polyethylene terephthalate (PET) substrates. In addition to state of art performance, the transparent electrodes also exhibit outstanding toughness. This film is flexible, transparent and provides good conductivity. They can withstand repeated scotch tape peeling and various bending tests. The method for making the metal nanowire is scalable and a touch screen on flexible substrate is demonstrated. The further improvements of the transparent film are discussed.

Energy Harvesting Properties of Electrospun Nanofibers

Energy Harvesting Properties of Electrospun Nanofibers
A Book

by Jian Fang,Yong Lin

  • Publisher : Unknown Publisher
  • Release : 2019-12-27
  • Pages : 280
  • ISBN : 9780750320061
  • Language : En, Es, Fr & De
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This book provides a state-of-the-art review on the applications of electrospun nanofibers for piezoelectric and triboelectric energy harvesting. It comprises eight chapters, covering the basis of electrospinning, nanofibers, piezoelectricity, triboelectricity and the emerging research on the use of nanofibers in energy harvesting devices. The book is a key referencefor graduate students, researchers and scientists in the fields of energy harvesting, sensors or nanofibers, and would benefit industry specialistsinvolvedwithenergy materials and energy conversion technology.

International Journal of Electrospun Nanofibers and Applications

International Journal of Electrospun Nanofibers and Applications
A Book

by Anonim

  • Publisher : Serials Publications
  • Release : 2021
  • Pages : 329
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Introducing Carbonized Electrospun Pan Nanofibers as Flow Battery Electrodes

Introducing Carbonized Electrospun Pan Nanofibers as Flow Battery Electrodes
A Book

by Neda Seyedhassantehrani

  • Publisher : Unknown Publisher
  • Release : 2016
  • Pages : 80
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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The objective of this thesis was to develop an electrospun polyacrylonitrile (PAN)-based nanofiber that has unique properties as an electrode material. Stabilizing, carbonizing, and chemical activation of these nanofibers can help to improve meso-porous carbon for the application as carbon-based electrodes. The study includes two main parts. In part I, nanofibers were electrospun under different electrospinning conditions, such as applied voltage and the distance between the spinneret and the target, to determine the best process conditions. Then, the PAN nanofibrous mats were stabilized in air, carbonized in inert atmosphere (argon), and activated using a potassium hydroxide (KOH) chemical method. During the chemical activation, carbonized nanofibers were immersed in an aqueous KOH solution. In part II, the structure and morphology were studied using scanning electron microscopy (SEM). The diameter of the nanofibers was measured and monitored as a function of the applied voltage, distance between the spinneret and the target, and the chemical (KOH) treatment. Porosity of carbon-based nanofibers has been studied by weighing the nanofibrous mat after absorption of isopropanol. Porosity by chemical treatment improved from 60% to 90%, thus providing a higher contact area, which is an important factor for electrodes. As a result of the physical and chemical treatments, wettability of the electrospun nanofibers varied from hydrophobicity with a contact angle of 150° to superhydrophilicity with a contact angle of 20°. The electrochemical performance of the electrodes was tested by cyclic voltammetry (CV) in a hydrochloric acid (HCl) aqueous solution in the presence of an Fe(III)/(II) redox couple. Results showed that the prepared sample has a smaller ∆Ep unlike the carbon felt, which is an indicator of a more active PAN carbonized nanofiber in comparison to the felt. Carbon nanofiber (CNF) samples have a higher peak current, which indicates a higher surface area.

Electrospinning of Nanofibers in Textiles

Electrospinning of Nanofibers in Textiles
A Book

by A. K. Haghi

  • Publisher : CRC Press
  • Release : 2011-12-15
  • Pages : 132
  • ISBN : 1466558679
  • Language : En, Es, Fr & De
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Electrospinning of nanofibers has emerged as a specialized processing technique for the formation of sub-micron fibers, with high specific surface areas. Electrospinning of Nanofibers in Textiles presents important new research in the dynamic and emerging field of electrospinning and covers all aspects of the technology as used to produce nanofibers.

Electrospun Nanofibers for Water Filtration and Sensing Applications

Electrospun Nanofibers for Water Filtration and Sensing Applications
A Book

by Fadwa Hussein Anka,University of Texas at Dallas. Graduate Program in Chemistry

  • Publisher : Unknown Publisher
  • Release : 2013
  • Pages : 190
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Among the several techniques used to produce nanofibers, electrospinning stands out to be the most convenient in terms of simplicity, cost and versatility. It is a bench top technique that allows the production of fibers with diameters ranging from few micrometers to tens of nanometers. Porous, hollow, core-shell or composite nanofibers can be fabricated by adjusting the electrospinning parameters or by incorporating metal oxides, biological agents, and nanostructures into the fibers. Due to their high porosity, their high specific surface area and their countless ways to be functionalized, electrospun nanofibers have found wide applications in the industrial, biomedical and environmental fields. In the first part of this study, electrospun hollow fiber membranes and electrospun composite membranes were produced and their desalination and adsorption performance were tested, respectively. The work on fabricating electrospun composite gold fibers is presented in the last part of this study. These fibers were used in sensing the concentration of a DNA repair protein.

Orientation and Morphology Development in Electrospun Nanofibers

Orientation and Morphology Development in Electrospun Nanofibers
A Book

by David Yuh-Shyang Lin

  • Publisher : Unknown Publisher
  • Release : 2005
  • Pages : 329
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Electrospun Nanofibers Research

Electrospun Nanofibers Research
Recent Developments

by A. K. Haghi

  • Publisher : Nova Science Pub Incorporated
  • Release : 2009
  • Pages : 313
  • ISBN : 9781607418344
  • Language : En, Es, Fr & De
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The research and development of nanofibres has gained much prominence over the years due to the heightened awareness of its potential applications in the medical, engineering and defense fields. This book offers an overview of structure - property relationships, synthesis and purification, and potential applications of electrospun nanofibres.

Electrospun Polymer Nanofibers

Electrospun Polymer Nanofibers
A Book

by Arkadii Arinstein

  • Publisher : CRC Press
  • Release : 2017-10-03
  • Pages : 198
  • ISBN : 9814745286
  • Language : En, Es, Fr & De
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Discussing the electrospinning process, the book covers in great depth the current research interest in nanoscience and nanotechnology, especially electrospinning of polymer nanofibers. The main distinction of the proposed book from others devoted to the electrospinning process is in the consideration of the problem in question from the physical point of view. Focusing on physical aspects, the book contains physical basics regarding the unique features of electrospun polymer nanofibers and the electrospinning resulting in fabrication of these nanofibers.

Semiconducting Electrospun Nanofibers for Energy Conversion

Semiconducting Electrospun Nanofibers for Energy Conversion
A Book

by Giulia Massaglia

  • Publisher : Unknown Publisher
  • Release : 2018
  • Pages : 329
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Nowadays, semiconducting thin films, thanks to their unique and excellent properties, play a crucial role for the design of devices for energy conversion and storage, such as solar cells, perovskite solar cells, lithium-ion batteries (LIBs), and fuel cells. Since the nanostructured arrangements can improve the behavior of the materials in several application fields, in this chapter we propose the electrospinning process as electro-hydrodynamic deposition to obtain semiconducting materials, in the form of nanofiber mats. The nanostructured mats are able to provide high surface-area-to-volume ratio and a microporous structure, which are crucial aspects for energetic application. In this chapter, we deeply describe the electrospinning process and how nanofibers obtained can be used in energy devices, satisfying all the requirements to improve overall final performances.

Functionalized Electrospun Nanofibers for Sample Preparation and Analyte Detection in Microfluidic Bioanalytical Systems

Functionalized Electrospun Nanofibers for Sample Preparation and Analyte Detection in Microfluidic Bioanalytical Systems
A Book

by Lauren Elizabeth Matlock-Colangelo

  • Publisher : Unknown Publisher
  • Release : 2015
  • Pages : 135
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Microfluidic biosensors which incorporate both sample preparation and analyte detection, also referred to as lab-on-a-chip (LOC) devices, are a promising means of providing low cost, rapid, and portable analyte detection in point-of-care, rural, and developing world applications1- 3 . However, despite numerous reports of LOC devices capable of detecting a range of clinical analytes1-3, there are several key challenges that face the development of true LOC devices. First, due to the small size of these miniaturized systems, it is often necessary to significantly concentrate the sample volume to the nL-[MICRO SIGN]L range 4. Additionally, samples must be purified to remove particulates and impurities that may impede analyte detection. Finally, fluid flow in microfluidic devices is generally laminar, which limits the amount of fluid mixing that occurs within the channels5-7. Because rapid fluid mixing is typically required to facilitate chemical reactions and ensure access of analytes to functional surfaces within the microchannels, micromixers need to be incorporated into the design of a LOC device. This research aims to address the need for both better sample preparation and fluid mixing within microfluidic assays through the use of functionalized electrospun nanofibers. Electrospinning is a fiber formation process in which electrical forces are used to form ultrathin fibers from viscous polymer spinning solutions8. The nonwoven fiber mats produced during electrospinning are characterized by extremely large surface-area-to-volume ratios and high porosities. Additionally, electrospun nanofibers can easily be functionalized either through the inclusion of nanoscale materials into the polymer spinning dope, or through post-spinning modifications. In this work, positively and negatively charged poly(vinyl alcohol) (PVA) nanofibers were created through the addition of hexadimethrine bromide (polybrene) and poly(methyl vinyl ether-alt-maleic anhydride) (poly(MVE/MA), respectively, into a 10% w/v PVA spinning solution. Additionally, larger diameter polystyrene (PS) microfibers with a range of morphologies were spun using 12.5, 15, and 17% w/v PS spinning solutions. Previously, gold microelectrodes patterned onto poly(methyl methacrylate) (PMMA) were used to incorporate the nanofibers into microfluidic channels9,10. However, in this work, fibers were bonded into microchannels without the use of a gold electrode, resulting in simple, inexpensive device fabrication. Both PVA and PS fibers were spun onto metal collector plates and manually transferred to pieces of PMMA that had undergone UV-Ozone treatment. In order to produce nanofiber mats with uniform fiber distributions along their height, thin nanofiber mats were stacked together to create multilayered mats 11,12. Positively charged PVA mats were shown to successfully bind and concentrate E. coli cells, while negatively charged PVA mats repelled the cells and were used to minimize nonspecific retention within the channels. The 3D morphology of the PVA nanofiber mats was optimized to eliminate nonspecific mechanical retention of the E. coli while also providing sufficient surface area for E. coli capture. Finally, anti-E. coli antibodies were immobilized on negatively charged PVA fibers to allow for successful specific capture of the analyte. Fluid mixing within Y-shaped microchannels was enhanced through the incorporation of both PVA nanofibers and PS microfibers, though the PVA fibers produced the most significant mixing. We assume that mixing within the PVA nanofiber mats is caused by the inhomogeneity of pore size and pore distribution within the mats rather than by the individual nanofibers. Statistical analysis of mixing within the nanofiber mats indicates that mixing is dependent on the height of the nanofiber mat (i.e. the number of layers) but is independent of the length of the nanofiber mat. As expected, the amount of mixing observed increased with decreasing fluid flow rate. The results of this study can be used to provide both enhanced sample preparation and fluid mixing with microfluidic biosensors. In addition, further functionalization of the nanofiber surfaces can be used to allow for detection of a wide range of analytes.

One-Dimensional nanostructures

One-Dimensional nanostructures
Electrospinning Technique and Unique Nanofibers

by Zhenyu Li,Ce Wang

  • Publisher : Springer Science & Business Media
  • Release : 2013-03-21
  • Pages : 141
  • ISBN : 3642364276
  • Language : En, Es, Fr & De
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One-Dimensional Nanostructures: Electrospinning Technique and Unique Nanofibers is a comprehensive book depicting the electrospinning technique and related 1D unique electrospun nanofibers. The first part of the book focuses on electrospinning technique, with chapters describing Electrospinning setup, electrospinning theories, and related working parameter. The second part of the book describes in detail specific topics on how to control the electrospun fiber properties such as how to control the fiber direction, how to control the fiber surface morphology, how to control the fiber structure, and how to construct 3D structures by electrospun fibers. The final part of the book depicts the applications of the electrospun nanofibers, with sections describing in detail specific fields such as electrospun nanofiber reinforcement, filtration, electronic devices, lithium-ion batteries, fuel cells, biomedical field, and so on. One-Dimensional Nanostructures: Electrospinning Technique and Unique Nanofibers is designed to bring state-of-the-art on electrospinning together into a single book and will be valuable resource for scientists in the electrospinning field and other scientists involved in biomedical field, mechanical field, materials, and energy field. Dr. Zhenyu Li is an associate professor at the Dept. of Chemistry, Jilin University, Changchun, P. R. China. Currently, he also holds the position in Australian Future Fibres Research & Innovation Centre, Institute for Frontier Materials, Deakin University, Geelong, Victoria, Australia. Dr. Ce Wang is a professor at the Dept. of Chemistry, Jilin University, Changchun, P. R. China.

Tailoring of Architecture and Intrinsic Structure of Electrospun Nanofibers by Process Parameters for Tissue Engineering Applications

Tailoring of Architecture and Intrinsic Structure of Electrospun Nanofibers by Process Parameters for Tissue Engineering Applications
A Book

by Dorota Kołbuk

  • Publisher : Unknown Publisher
  • Release : 2016
  • Pages : 329
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Electrospinning process is commercially used to form nanofibers as scaffolds in tissue engineering. Similarities in morphology of electrospun nanofibers to the natural extracellular matrix, flexibility, and low cost of the process contribute to their use in regeneration of cartilage, ligaments/tendons, muscles, and bones. Required properties are tailored by the use of appropriate polymers: polyesters, their copolymers, blends with natural biopolymers such as gelatin, collagen, chitosan, or composites with nanoparticles.

Functionalized Electrospun Nanofibers in Microfluidic Bioanalytical Systems

Functionalized Electrospun Nanofibers in Microfluidic Bioanalytical Systems
A Book

by Lauren Elizabeth Matlock-Colangelo

  • Publisher : Unknown Publisher
  • Release : 2012
  • Pages : 148
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Biosensors detect target analytes through specific binding with biological recognition elements such as nucleic acids, enzymes, and antibodies. Many labs are working to create inexpensive and portable miniaturized sensors that allow for rapid sample analysis and low reagent consumption in order to increase biosensor accessibility in rural areas and third world countries. Lab-on-a-chip devices aim to incorporate sample preparation and analyte detection into one device in order to create self-contained sensors that can be used in rural areas and third world countries where laboratory equipment may not be available. Often, these devices incorporate microfluidics in order to shorten reaction times, reduce handling of hazardous samples, and take advantage of laminar flow [1]. However, while several successful lab-on-achip devices have been developed, incorporating sample preparation and analyte detection within one device is still a key challenge in the design of many biosensors. Sample preparation is extremely important for miniaturized sensors, which have a low tolerance for sample impurities and particulates [1]. In addition, significant sample concentration is often required to reduce sample volumes to the nL to mL range used in miniaturized sensors. This research aims to address the need for sample preparation within lab-on-a-chip systems through the use of functionalized electrospun nanofibers within polymer microfluidic devices. Electrospinning is a fiber formation process that uses electrical forces to form fibers with diameters on the order of 100 nm from polymer spinning dopes [2, 3]. The non-woven fiber mats formed during electrospinning have extremely high surface area to volume ratios, and can be used to increase the sensitivity and binding capacity of biosensors without increasing their size. Additionally, the fibers can be functionalized through the incorporation of nano and microscale materials within a polymer spinning dope. In this work, positively and negatively charged v nanofibers were created through the incorporation of hexadimethrine bromide (polybrene) and poly(maleic anhydride) (Poly(MA)) within a poly(vinyl alcohol) spinning dope. Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS) confirmed the successful incorporation of polybrene and poly(MA) into the nanofibers. Gold microelectrodes were patterned on poly(methyl methacrylate) (PMMA) to facilitate the incorporation of nanofibers within microfluidic devices. The gold microelectrodes served as grounded collector plates during electrospinning and produced well-aligned nanofiber mats. Microchannels 1 mm wide and 52 [MICRO SIGN]m deep were imprinted into PMMA through hot embossing with a copper template. PMMA pieces embossed with microchannels were bonded to PMMA pieces with gold microelectrodes and nanofibers using UV-assisted thermal bonding. Positively charged polybrene-modified nanofibers were shown to successfully filter negatively charged fluorescent liposomes out of a HEPES-sucrose-saline buffer, while negatively charged poly(MA)-modified nanofibers were shown to repel the liposomes. The effect of nanofiber mat thickness on liposome retention was studied using the z-scan function of a Leica confocal microscope. It was determined that positively charged nanofibers exhibited optimal liposome retention at thicknesses of 20 [MICRO SIGN]m and above. Negatively charged nanofiber mats over 40 [MICRO SIGN]m thick retained liposomes due to their small pore size despite their surface charge. Finally, it was demonstrated that a HEPES-sucrose-saline solution of pH 8.5 could be used to change the charge of the positively charged polybrene nanofibers and allow for the release of previously bound liposomes. The results of this study can be used to design lab-on-a-chip devices capable of performing all sample preparation and analyte detection in one miniaturized microfluidic sensor. vi In addition, other nanofiber surface chemistries can be studied to create more specific sample filtration and allow for immobilization of biological recognition element. vii.