The Behaviour Of Nanoclay Modified Asphalt Binders And Mixtures

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The Behaviour of Nanoclay Modified Asphalt Binders and Mixtures

Author : Liniker Lettiere Ferreira Monteiro
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (134 download)

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Book Synopsis The Behaviour of Nanoclay Modified Asphalt Binders and Mixtures by : Liniker Lettiere Ferreira Monteiro

Download or read book The Behaviour of Nanoclay Modified Asphalt Binders and Mixtures written by Liniker Lettiere Ferreira Monteiro and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Asphalt pavement is subject to stresses induced by heavy traffic loading and thermal variations during its service life. Nowadays, increasing the permissible axle loads along with the impact of climate change have caused premature failure in the flexible pavement. Enhancing the properties of asphalt binders can reduce these distresses. Among the available options, finding a cost-effective alternative for improving the used binders is a challenge to overcome. Asphalt binder modification using nano-size materials has attracted attentions in recent years. Based on this study, nanoclays can improve the properties of asphalt binders, increase the resistance of asphalt to ageing, cracking and rutting, and extend the pavement's service life cycle. The objectives of this work were to investigate the rheological and mechanical properties of nanoclay modified asphalt binders and mixtures. The behaviour of a PG 64-28 asphalt binder modified with 2% and 4% concentration of two organo-montmorillonites was studied. Furthermore, the impact of using nanoclays was investigated in asphalt mixtures' performance. The nanoclays were mixed with the asphalt using a high shear mixer, and their dispersions were analyzed by employing a Scanning Electron Microscope (SEM) device. A SARA test was conducted on the modified and unmodified binders to examine the fraction composition of saturates, asphaltenes, resins and aromatics before and after the addition of nanoclays. Also, the neat binder and the nanoclay modified binders were subjected to short-term ageing using a rolling thin-film oven (RTFO) and long-term aged using a pressure ageing vessel (PAV). The following rheological properties of the asphalt binders were investigated: (1) High-temperature performance grading of unaged samples using a dynamic shear rheometer (DSR), (2) High-temperature performance grading of RTFO-aged samples using a DSR, (3) Intermediate temperature grading of PAV-aged samples using a DSR, (5) Low-temperature performance grading using a bending beam rheometer (BBR), (4) Two-piece healing test using a DSR, (6) Frequency-Sweep tests using a DSR, (7) Mixing and Compaction temperatures using a rotational viscometer, and (8) Mixing and compaction temperatures of modified asphalt binders using a DSR. Additionally, the mechanical properties of the asphalt mixtures that were analyzed are as follows: (1) Flow and Stability and stability test, (2) Bulk specific gravity test, (3) Theoretical maximum specific gravity on loose mixtures, (4) Fatigue and healing behaviour using a four-point bending test and (5) Dynamic Modulus test on Superpave samples. The results obtained from the high-temperature grading showed that the addition of 4% organo-montmorillonites increases the high-temperature grade from 64 to 70. Also, no change was observed in the low-temperature performance of the modified samples. The two-piece healing test showed promising results for nano-modified samples, with significant improvements in the initial healing proportional to the concentration of nanoclays in the binder. The Frequency-sweep analysis, utilizing a master curve, showed an improvement in ageing resistance by adding Montmorillonites. Furthermore, the SARA test results indicated that the nanoclay modified mixtures were storage stable. The asphalt mixture samples demonstrated, by repeated flexural bending using a four-point bending apparatus, increased stiffness and life cycles of the organo-montmorillonite modified asphalt mixtures.

Mechanical Behavior of Nanoclay Modified Asphalt Mixtures

Author : Saeed Ghaffarpour Jahromi
Publisher :
ISBN 13 :
Total Pages : 9 pages
Book Rating : 4.:/5 (125 download)

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Book Synopsis Mechanical Behavior of Nanoclay Modified Asphalt Mixtures by : Saeed Ghaffarpour Jahromi

Download or read book Mechanical Behavior of Nanoclay Modified Asphalt Mixtures written by Saeed Ghaffarpour Jahromi and published by . This book was released on 2010 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polymeric nanocomposites are among the most exciting and promising classes of materials discovered recently. A number of physical properties are successfully enhanced when a polymer is modified with small amount of nanoclay on condition that the clay is dispersed at nanoscopic level. In this research, comparative rheological tests on binders and mechanical tests on asphalt mixtures containing unmodified and nanoclay modified bitumen, were carried out. Two types of nanoclay were used: Nanofill-15 and Cloisite-15A. Rheological tests on binder were penetration, softening point, ductility, and aging effect. Mechanical tests on asphalt mixture were Marshall stability, indirect tensile strength, resilient modulus, diametric fatigue, and dynamic creep tests. Test results show that nanoclay can improve properties such as stability, resilient modulus, and indirect tensile strength and result in superior performance compared to that of unmodified bitumen under dynamic creep. Nanoclays do not seem to have beneficial effect on fatigue behavior in low temperature. Optimum binder content and void in total mixture increase by adding nanoclay to bitumen.

Nano-Modified Asphalt Binders and Mixtures to Enhance Pavement Performance

Author : Luís Picado Santos
Publisher :
ISBN 13 : 9783039367108
Total Pages : 198 pages
Book Rating : 4.3/5 (671 download)

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Book Synopsis Nano-Modified Asphalt Binders and Mixtures to Enhance Pavement Performance by : Luís Picado Santos

Download or read book Nano-Modified Asphalt Binders and Mixtures to Enhance Pavement Performance written by Luís Picado Santos and published by . This book was released on 2020-09-18 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is dedicated to the use of nanomaterials for the modification of asphalt binders, and to investigate whether or not the use of nanomaterials for asphalt mixtures fabrication achieves more effective asphalt pavement layers. A total of 10 contributions are included. Four are related to "Binder's modification" and five to "Asphalt mixtures' modification". The remaining contribution is a review of the effects of the modifications on nanomaterials, particularly nanosilica, nanoclays and nanoiron, on the performance of asphalt mixtures. The published group of papers fosters awareness about the use of nanomaterials to modify asphalt mixtures to obtain more performant and durable flexible road pavements.

Superpave Mix Design

Author : Asphalt Institute
Publisher :
ISBN 13 : 9781934154175
Total Pages : 102 pages
Book Rating : 4.1/5 (541 download)

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Book Synopsis Superpave Mix Design by : Asphalt Institute

Download or read book Superpave Mix Design written by Asphalt Institute and published by . This book was released on 2001-01-01 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Characteristics of Asphalt Binders

Author :
Publisher :
ISBN 13 :
Total Pages : 144 pages
Book Rating : 4.3/5 ( download)

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Book Synopsis Characteristics of Asphalt Binders by :

Download or read book Characteristics of Asphalt Binders written by and published by . This book was released on 1996 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Modified Asphalt

Author : Jose Luis Rivera Armenta
Publisher : BoD – Books on Demand
ISBN 13 : 1789237262
Total Pages : 142 pages
Book Rating : 4.7/5 (892 download)

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Book Synopsis Modified Asphalt by : Jose Luis Rivera Armenta

Download or read book Modified Asphalt written by Jose Luis Rivera Armenta and published by BoD – Books on Demand. This book was released on 2018-09-19 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt: Asphalt modification is an important area in the development of new road and pavement materials. There is an urgent demand for road materials that can minimize fracture at low temperatures and increase resistance to deformation at high temperatures. The function of asphalt is to bind aggregate to protect it from water and other harmful agents. In the beginning asphalt was ideal for this purpose, but recently traffic loads have increased and environmental factors have deteriorated more rapidly than before. Asphalt is a byproduct of crude oil in the refining process, and it is considered a complex heterogeneous mixture of hydrocarbons. Asphalt modification has become an important research area, using several methods and new materials as modifiers.

Laboratory Evaluation of Nanoclay Asphalt Binders

Author : M M Tariq Morshed
Publisher :
ISBN 13 :
Total Pages : 171 pages
Book Rating : 4.:/5 (123 download)

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Book Synopsis Laboratory Evaluation of Nanoclay Asphalt Binders by : M M Tariq Morshed

Download or read book Laboratory Evaluation of Nanoclay Asphalt Binders written by M M Tariq Morshed and published by . This book was released on 2019 with total page 171 pages. Available in PDF, EPUB and Kindle. Book excerpt: The main goal of this study is to assess the feasibility of the use of nanoclay as an alternative to commonly used polymers such as styrene-butadiene-styrene (SBS), which are used to modify the performance grade (PG) of asphalt binders. Three types of nanoclay and two types of neat binders were selected for laboratory investigation. Different amounts (1, 2, and 3%) of nanoclays were used. A blending protocol was developed to mix the nanoclay with the asphalt binder. Penetration, Rotational Viscosity (RV), Dynamic Shear Rheometer (DSR), Multiple Stress Creep and Recovery (MSCR), Frequency Sweep (FS), Linear Amplitude Sweep (LAS), Optical Contact Analyzer (OCA), Texas Boiling Test, and Atomic Force Microscope (AFM) were conducted to evaluate the properties of modified asphalt binders. Significant increases of viscosity and complex shear modulus were observed for nanoclay-modified binders because of its nanoscale phenomena such as structural features, quantum effects, spacial confinement, and high surface energy.

Polymer-Clay Nanocomposites

Author : T. J. Pinnavaia
Publisher : Wiley
ISBN 13 : 9780471637004
Total Pages : 0 pages
Book Rating : 4.6/5 (37 download)

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Book Synopsis Polymer-Clay Nanocomposites by : T. J. Pinnavaia

Download or read book Polymer-Clay Nanocomposites written by T. J. Pinnavaia and published by Wiley. This book was released on 2001-01-19 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polymer-clay nanocomposites are formed through the union of two very different materials with organic and mineral pedigrees. The hybrid compositions, however, exhibit large increases in tensile strength, modulus, and heat distortion temperature as compared with the pristine polymer. The composites also have lower water sensitivity, reduced permeability to gases, and a similar thermal coefficient of expansion. All of these property improvements can be realized without a loss of clarity in the polymer. Further, it has been found that nanocomposites impart a level of flame retardance and UV resistance not present in the pure polymer. These improvements in performance properties at relatively low clay loading (typically 2 -10wt %) have stimulated intensive research in both industry and academia over the past decade. Polymer-Clay Nanocomposites presents the first comprehensive overview of the state of the art of these materials since they were first reported a decade ago. Covering both the theory and practical applications, this volume in the 'Wiley Series in Polymer Science' covers the key aspects of these important materials including: * Polymer-clay intercalates * The preparation and general properties of special practical and commercial significance (including strength, stiffness, toughness, permeability, fire retardation and chemical stability) * The elucidation of the structural and rheological factors influencing performance and processing properties Polymer-Clay Nanocomposites is an indispensable text for polymer scientists, composites formulators, materials engineers, resin producers, filters and additive producers as well as university lecturers, and organic and inorganic chemists working in this important and fascinating area.

Proceedings of the RILEM International Symposium on Bituminous Materials

Author : Hervé Di Benedetto
Publisher : Springer Nature
ISBN 13 : 3030464555
Total Pages : 1806 pages
Book Rating : 4.0/5 (34 download)

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Book Synopsis Proceedings of the RILEM International Symposium on Bituminous Materials by : Hervé Di Benedetto

Download or read book Proceedings of the RILEM International Symposium on Bituminous Materials written by Hervé Di Benedetto and published by Springer Nature. This book was released on 2021-09-25 with total page 1806 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume highlights the latest advances, innovations, and applications in bituminous materials and structures and asphalt pavement technology, as presented by leading international researchers and engineers at the RILEM International Symposium on Bituminous Materials (ISBM), held in Lyon, France on December 14-16, 2020. The symposium represents a joint effort of three RILEM Technical Committees from Cluster F: 264-RAP “Asphalt Pavement Recycling”, 272-PIM “Phase and Interphase Behaviour of Bituminous Materials”, and 278-CHA “Crack-Healing of Asphalt Pavement Materials”. It covers a diverse range of topics concerning bituminous materials (bitumen, mastics, mixtures) and road, railway and airport pavement structures, including: recycling, phase and interphase behaviour, cracking and healing, modification and innovative materials, durability and environmental aspects, testing and modelling, multi-scale properties, surface characteristics, structure performance, modelling and design, non-destructive testing, back-analysis, and Life Cycle Assessment. The contributions, which were selected by means of a rigorous international peer-review process, present a wealth of exciting ideas that will open novel research directions and foster new multidisciplinary collaborations.

Nanotechnology in Civil Infrastructure

Author : Kasthurirangan Gopalakrishnan
Publisher : Springer Science & Business Media
ISBN 13 : 3642166571
Total Pages : 276 pages
Book Rating : 4.6/5 (421 download)

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Book Synopsis Nanotechnology in Civil Infrastructure by : Kasthurirangan Gopalakrishnan

Download or read book Nanotechnology in Civil Infrastructure written by Kasthurirangan Gopalakrishnan and published by Springer Science & Business Media. This book was released on 2011-03-31 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanotechnology in Civil Infrastructure is a state-of-the art reference source describing the latest developments in nano-engineering and nano-modification of construction materials to improve the bulk properties, development of sustainable, intelligent, and smart concrete materials through the integration of nanotechnology based self-sensing and self-powered materials and cyber infrastructure technologies, review of nanotechnology applications in pavement engineering, development of novel, cost-effective, high-performance and long-lasting concrete products and processes through nanotechnology-based innovative processing of cement and cement paste, and advanced nanoscience modeling, visualization, and measurement systems for characterizing and testing civil infrastructure materials at the nano-scale. Researchers, practitioners, undergraduate and graduate students engaged in nanotechnology related research will find this book very useful.

Hot-mix Asphalt Mixtures

Author :
Publisher :
ISBN 13 :
Total Pages : 192 pages
Book Rating : 4.:/5 (932 download)

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Book Synopsis Hot-mix Asphalt Mixtures by :

Download or read book Hot-mix Asphalt Mixtures written by and published by . This book was released on 1999 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Evaluation of Asphalt Blended With Low Percentage of Carbon Micro-Fiber and Nanoclay

Author : Hui Yao
Publisher :
ISBN 13 :
Total Pages : 11 pages
Book Rating : 4.:/5 (125 download)

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Book Synopsis Evaluation of Asphalt Blended With Low Percentage of Carbon Micro-Fiber and Nanoclay by : Hui Yao

Download or read book Evaluation of Asphalt Blended With Low Percentage of Carbon Micro-Fiber and Nanoclay written by Hui Yao and published by . This book was released on 2013 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objectives of this study are to investigate the applicability of carbon micro-fiber and nanoclay in asphalt binders and to evaluate the performance of micro- and nano-modified asphalt (NMA) binders in terms of rheological properties. Due to their unique characteristics, micro- and nanomaterials were hypothesized to play a critical role in enhancing the performance behavior of asphalt binders. In light of existing research, carbon micro-fiber (MCF) and Nanomer I.44P (NI.44P) were selected as the micro- and nanomaterials for this research. Then, these materials were added into the PG 58-34 control asphalt binder at the concentrations of 2 % and 4 % by weight. SuperpaveTM binder tests{97}rotational viscosity (RV), dynamic shear rheometer (DSR), and bending beam rheometer (BBR){97}were then conducted for evaluating the performance of each modified asphalt binder. Also, the characterization tests were run on the aged samples prepared using the rolling thin film oven (RTFO) and pressure aging vessel (PAV) to simulate the short-term and long-term aging. Subsequently, the viscosity, dynamic shear modulus (|G*|) and phase angle (?) of asphalt binders were analyzed, and the dissipated energy per load cycle was introduced to estimate the asphalt binders' rutting and fatigue cracking resistance. It was found that the dynamic shear modulus of asphalt binders can be improved by the selected micro- and nanomaterials. Furthermore, the NI.44P modified asphalt showed better properties relative to the other modified asphalt binders or the control (PG 58-34) binder.

Influence of Polymer Modified Binders on the Fatigue Behavior of Asphalt Mixtures

Author : Elie Nassif Abi-Jaoude
Publisher :
ISBN 13 :
Total Pages : 212 pages
Book Rating : 4.:/5 (33 download)

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Book Synopsis Influence of Polymer Modified Binders on the Fatigue Behavior of Asphalt Mixtures by : Elie Nassif Abi-Jaoude

Download or read book Influence of Polymer Modified Binders on the Fatigue Behavior of Asphalt Mixtures written by Elie Nassif Abi-Jaoude and published by . This book was released on 1991 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Influence of Rheological Properties of Modified Asphalt Binders on the Load-deformation Characteristics of the Binder-aggregate Mixtures

Download Influence of Rheological Properties of Modified Asphalt Binders on the Load-deformation Characteristics of the Binder-aggregate Mixtures PDF Online Free

Author : Akhtarhusein Asgarali Tayebali
Publisher :
ISBN 13 :
Total Pages : 460 pages
Book Rating : 4.:/5 (33 download)

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Book Synopsis Influence of Rheological Properties of Modified Asphalt Binders on the Load-deformation Characteristics of the Binder-aggregate Mixtures by : Akhtarhusein Asgarali Tayebali

Download or read book Influence of Rheological Properties of Modified Asphalt Binders on the Load-deformation Characteristics of the Binder-aggregate Mixtures written by Akhtarhusein Asgarali Tayebali and published by . This book was released on 1990 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Understanding the Performance of Modified Asphalt Binders in Mixtures

Author : Kevin D. Stuart
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (14 download)

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Book Synopsis Understanding the Performance of Modified Asphalt Binders in Mixtures by : Kevin D. Stuart

Download or read book Understanding the Performance of Modified Asphalt Binders in Mixtures written by Kevin D. Stuart and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The overall objective of this study was to determine if the Superpave high-temperature rheological properties of polymer-modified asphalt binders correlate to asphalt mixture rutting resistance. An emphasis was placed on evaluating polymer-modified asphalt binders with identical (or close) high-temperature performance grades (PG's), but varied polymer chemistries. Eleven asphalt binders were obtained for this study: two unmodified asphalt binders, an air-blown asphalt binder, and eight polymer-modified asphalt binders. High-temperature asphalt binder properties were measured by a dynamic shear rheometer (DSR). Mixture rutting resistance was measured by repeated shear at constant height (RSCH), and the French Pavement Rutting Tester (French PRT). The first objective was to verify the findings of a previous study using a different aggregate. In the previous study, it was found that the Superpave high-temperature asphalt binder properties correlated to mixture rutting resistance with few outliers, and a change in high-temperature PG from 70 to 76 increased rutting resistance. However, the correlation between RSCH and asphalt binder G*/sind (delta) depended on DSR frequency. The data suggested that a low DSR frequency, such as 0.1 rad/s, might provide a better grading system than the standard DSR frequency of 10.0 rad/s. This would require a change in the current asphalt binder specification. A diabase aggregate was used in a previous study. The data using a second aggregate, a limestone aggregate, in combination with four of the asphalt binders, agreed with the findings from the diabase mixtures. The second objective was to retest the diabase mixtures at 70 degrees Celsius using RSCH. The test temperatures used in the previous study were 50 degrees Celsius for RSCH and 70 degrees Celsius for the French PRT. The polymer-modified asphalt binders had continuous high-temperature PG's ranging from 71 to 77. Therefore, it was recommended that the test temperature for RSCH be increased to 70 degrees Celsius. Again, the correlation between RSCH and G*/sind was dependent on DSR frequency. The data suggested that a low DSR frequency, such as 0.1 rad/s, might provide a better grading system. However, it is not known whether this finding applies to pavements, or is related to the accelerated nature of the RSCH test. Furthermore, G*/sind (delta) at 0.1 rad/s did not clearly provide a better correlation to RSCH than the high-temperature PG's of the asphalt binders. The degree of correlation between the French PRT and G*/sind at 70 degrees Celsius did not depend on DSR frequency, and there was only one outlier. A correlation between the French PRT and high-temperature PG provided no obvious outliers. No changes to the specification are recommended based on the French PRT results.

Nanotechnology in Eco-Efficient Construction

Author : Fernando Pacheco-Torgal
Publisher : Elsevier
ISBN 13 : 0857098837
Total Pages : 459 pages
Book Rating : 4.8/5 (57 download)

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Book Synopsis Nanotechnology in Eco-Efficient Construction by : Fernando Pacheco-Torgal

Download or read book Nanotechnology in Eco-Efficient Construction written by Fernando Pacheco-Torgal and published by Elsevier. This book was released on 2013-04-04 with total page 459 pages. Available in PDF, EPUB and Kindle. Book excerpt: As the environmental impact of existing construction and building materials comes under increasing scrutiny, the search for more eco-efficient solutions has intensified. Nanotechnology offers great potential in this area and is already being widely used to great success. Nanotechnology in eco-efficient construction is an authoritative guide to the role of nanotechnology in the development of eco-efficient construction materials and sustainable construction. Following an introduction to the use of nanotechnology in eco-efficient construction materials, part one considers such infrastructural applications as nanoengineered cement-based materials, nanoparticles for high-performance and self-sensing concrete, and the use of nanotechnology to improve the bulk and surface properties of steel for structural applications. Nanoclay-modified asphalt mixtures and safety issues relating to nanomaterials for construction applications are also reviewed before part two goes on to discuss applications for building energy efficiency. Topics explored include thin films and nanostructured coatings, switchable glazing technology and third generation photovoltaic (PV) cells, high-performance thermal insulation materials, and silica nanogel for energy-efficient windows. Finally, photocatalytic applications are the focus of part three, which investigates nanoparticles for pollution control, self-cleaning and photosterilisation, and the role of nanotechnology in manufacturing paints and purifying water for eco-efficient buildings. Nanotechnology in eco-efficient construction is a technical guide for all those involved in the design, production and application of eco-efficient construction materials, including civil engineers, materials scientists, researchers and architects within any field of nanotechnology, eco-efficient materials or the construction industry. Provides an authoritative guide to the role of nanotechnology in the development of eco-efficient construction materials and sustainable construction Examines the use of nanotechnology in eco-efficient construction materials Considers a range of important infrastructural applications, before discussing applications for building energy efficiency

Nanoscale Science and Technology

Author : Robert Kelsall
Publisher : John Wiley & Sons
ISBN 13 : 0470020865
Total Pages : 472 pages
Book Rating : 4.4/5 (7 download)

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Book Synopsis Nanoscale Science and Technology by : Robert Kelsall

Download or read book Nanoscale Science and Technology written by Robert Kelsall and published by John Wiley & Sons. This book was released on 2005-11-01 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanotechnology is a vital new area of research and development addressing the control, modification and fabrication of materials, structures and devices with nanometre precision and the synthesis of such structures into systems of micro- and macroscopic dimensions. Future applications of nanoscale science and technology include motors smaller than the diameter of a human hair and single-celled organisms programmed to fabricate materials with nanometer precision. Miniaturisation has revolutionised the semiconductor industry by making possible inexpensive integrated electronic circuits comprised of devices and wires with sub-micrometer dimensions. These integrated circuits are now ubiquitous, controlling everything from cars to toasters. The next level of miniaturisation, beyond sub-micrometer dimensions into nanoscale dimensions (invisible to the unaided human eye) is a booming area of research and development. This is a very hot area of research with large amounts of venture capital and government funding being invested worldwide, as such Nanoscale Science and Technology has a broad appeal based upon an interdisciplinary approach, covering aspects of physics, chemistry, biology, materials science and electronic engineering. Kelsall et al present a coherent approach to nanoscale sciences, which will be invaluable to graduate level students and researchers and practising engineers and product designers.