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Mastering 3D printing in the classroom, library, and lab
Learn how to manage and integrate the technology of 3D printers in the classroom, library, and lab. With this book, the authors give practical, lessons-learned advice about the nuts and bolts of what happens when you mix 3D printers, teachers, students, and the general public in environments ranging from K-12 and university classrooms to libraries, museums, and after-school community programs. Take your existing programs to the next level with Mastering 3D Printing in the Classroom, Library, and Lab. Organized in a way that is readable and easy to understand, this book is your guide to the many technology options available now in both software and hardware, as well as a compendium of practical use cases and a discussion of how to create experiences that will align with curriculum standards. You'll examine the whole range of working with a 3D printer, from purchase decision to curriculum design. Finally this book points you forward to the digital-fabrication future current students will face, discussing how key skills can be taught as cost-effectively as possible.--Back cover.
Book
Study of Single and Multipass If/I–rGO Inkjet-Printed Structures with Various Concentrations: Electrical and Thermal Evaluation
Reduced graphene oxide (rGO) is a derivative of graphene, which has been widely used as the conductive pigment of many water-based inks and is recognized as one of the most promising graphene-based materials for large-scale and low-cost production processes. In this work, we evaluate a custom functionalised reduced graphene oxide ink (f–rGO) via inkjet-printing technology. Test line structures were designed and fabricated by the inkjet printing process using the f–rGO ink on a pretreated polyimide substrate. For the electrical characterisation of these devices, two-point (2P) and four-point (4P) probe measurements were implemented. The results showed a major effect of the number of printed passes on the resulting resistance for all ink concentrations in both 2P and 4P cases. Interesting results can be extracted by comparing the obtained multipass resistance values that results to similar effective concentration with less passes. These measurements can provide the ground to grasp the variation in resistance values due to the different ink concentrations, and printing passes and can provide a useful guide in achieving specific resistance values with adequate precision. Accompanying topography measurements have been conducted with white-light interferometry. Furthermore, thermal characterisation was carried out to evaluate the operation of the devices as temperature sensors and heaters. It has been found that ink concentration and printing passes directly influence the performance of both the temperature sensors and heaters.
Journal Article
William Caxton and Tim Berners-Lee
\"Discover how these two men changed the world in very different times. Follow Caxton's life as he introduced the world to the printing press, and compare with Berners Lee and his invention of the internet.Discover the differences and similarities between their amazing discoveries! Addressing the needs of the new history National Curriculum, this book will engage readers and encourage them to ask questions about history and how times change.\"--Provided by publisher.
BOOK
The Art and Technique of Digital Color Correction
How to\" books are a dime a dozen. What makes this book special is that it is also a \"Why\" book. Hullfish sits down with world-class colorists and records not only what they do but why they do it. That's where the magic lies.
\"How\" is the question to ask if you want to become a craftsman. \"Why\" is the question that creates artists. I bought the first edition for \"How\" and came away with a lot of \"Why.\" This edition has lots more of both, with material from several additional world class colorists.
If you want an inside look into the art and craft of the professional colorist there's no better way to do it in book form. Whether you're learning to be a colorist or just want to understand what really happens when you decide something can be \"fixed in post,\" you need to read this book. -Art Adams, cinematographer/educator, ProVideoCoalition.com. This book just keeps getting better with each new edition. Steve Hullfish's approach is designed to teach techniques that transfer to a wide range of popular and accessible color correction tools. The intent is to demystify the process, so readers can learn the concepts and apply them, regardless of whether the software has sliders, wheels or curves. Best of all, Hullfish features extensive tips and tricks from some of the premier colorists in the country, so you can learn from the masters. If you only purchase one book on color correction, this is the essential guide to include in your library. -Oliver Peters, Oliver Peters Peters Post Production Services, LLC A terrific and much-needed book for anybody serious about digital color correction. Starting with the basics, it helps the reader work through a series of specific, well-illustrated examples, covering all the major software applications, and supports the text with insightful comments from prominent working colorists. All in all, it's essential reading for anyone who wants to improve their skills in this rapidly changing field. -Steve Cohen, editor, Emmy and ACE Eddie winner, author of Avid Agility.
eBook
CUPS administrative guide
This book takes a tutorial approach and each chapter contains step-wise instructions to perform specific tasks. This book is for Linux/Unix System Administrators interested in designing and setting up a CUPS network and provides enough knowledge to understand how the technology works, make decisions about deployment, and then implement a stable work environment. No knowledge in CUPS is required but readers need to be comfortable with working in the Linux/Unix environment. On the whole, readers should have basic knowledge of the Linux environment.
eBook
Characterization and Modeling of a Pt-Insub.2Osub.3 Resistive Sensor for Hydrogen Detection at Room Temperature
Sensitive H[sub.2] sensors at low concentrations and room temperature are desired for the early warning and control of hydrogen leakage. In this paper, a resistive sensor based on Pt-doped In[sub.2]O[sub.3] nanoparticles was fabricated using inkjet printing process. The H[sub.2] sensing performance of the sensor was evaluated at low concentrations below 1% at room temperature. It exhibited a relative high response of 42.34% to 0.6% H[sub.2]. As the relative humidity of 0.5% H[sub.2] decreased from 34% to 23%, the response decreased slightly from 34% to 23%. The sensing principle and the humidity effect were discussed. A dynamic current sensing model for dry H[sub.2] detection was proposed based on Wolkenstein theory and experimentally verified to be able to predict the sensing behavior of the sensor. The H[sub.2] concentration can be calculated within a short measurement time using the model without waiting for the saturation of the response, which significantly reduces the sensing and recovery time of the sensor. The sensor is expected to be a promising candidate for room-temperature H[sub.2] detection, and the proposed model could be very helpful in promoting the application of the sensor for real-time H[sub.2] leakage monitoring.
Journal Article
Fabricated
Fabricated tells the story of 3D printers, humble manufacturing machines that are bursting out of the factory and into schools, kitchens, hospitals, even onto the fashion catwalk. Fabricated describes our emerging world of printable products, where people design and 3D print their own creations as easily as they edit an online document. A 3D printer transforms digital information into a physical object by carrying out instructions from an electronic design file, or 'blueprint.' Guided by a design file, a 3D printer lays down layer after layer of a raw material to 'print' out an object. That's not the whole story, however. The magic happens when you plug a 3D printer into today’s mind-boggling digital technologies. Add to that the Internet, tiny, low cost electronic circuitry, radical advances in materials science and biotech and voila! The result is an explosion of technological and social innovation. Fabricated takes the reader onto a rich and fulfilling journey that explores how 3D printing is poised to impact nearly every part of our lives. Aimed at people who enjoy books on business strategy, popular science and novel technology, Fabricated will provide readers with practical and imaginative insights to the question 'how will this technology change my life?' Based on hundreds of hours of research and dozens of interviews with experts from a broad range of industries, Fabricated offers readers an informative, engaging and fast-paced introduction to 3D printing now and in the future.
eBook
Inkjet printing of single-crystal films
Thin-film transistors in print
Printing electronic devices using semiconducting 'ink' is seen as a promising route to cheap, large-area and flexible electronics, but the performance of such devices suffers from the relatively poor crystallinity of the printed material. Hiromi Minemawari and colleagues have developed an inkjet-based printing technique involving controlled mixing on a surface of two solutions — the semiconductor (C8-BTBT) in its solvent and a liquid in which the semiconductor is insoluble. The products of this antisolvent crystallization technique are thin semiconductor films with exceptionally high and uniform crystallinity.
The use of single crystals has been fundamental to the development of semiconductor microelectronics and solid-state science
1
. Whether based on inorganic
2
,
3
,
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,
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or organic
6
,
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,
8
materials, the devices that show the highest performance rely on single-crystal interfaces, with their nearly perfect translational symmetry and exceptionally high chemical purity. Attention has recently been focused on developing simple ways of producing electronic devices by means of printing technologies. ‘Printed electronics’ is being explored for the manufacture of large-area and flexible electronic devices by the patterned application of functional inks containing soluble or dispersed semiconducting materials
9
,
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,
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. However, because of the strong self-organizing tendency of the deposited materials
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,
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, the production of semiconducting thin films of high crystallinity (indispensable for realizing high carrier mobility) may be incompatible with conventional printing processes. Here we develop a method that combines the technique of antisolvent crystallization
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with inkjet printing to produce organic semiconducting thin films of high crystallinity. Specifically, we show that mixing fine droplets of an antisolvent and a solution of an active semiconducting component within a confined area on an amorphous substrate can trigger the controlled formation of exceptionally uniform single-crystal or polycrystalline thin films that grow at the liquid–air interfaces. Using this approach, we have printed single crystals of the organic semiconductor 2,7-dioctyl[1]benzothieno[3,2-
b
][1]benzothiophene (C
8
-BTBT) (ref.
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), yielding thin-film transistors with average carrier mobilities as high as 16.4 cm
2
V
−1
s
−1
. This printing technique constitutes a major step towards the use of high-performance single-crystal semiconductor devices for large-area and flexible electronics applications.
Journal Article
CUPS Administrative Guide
In Detail The Common UNIX Printing System (CUPS) is software that allows a computer to act as a print server, receiving print jobs from client computers, managing them, and sending them to the appropriate printer. It consists of a print spooler and scheduler, filters to convert print jobs to the format required by each printer, and a backend system to send the data to the chosen printer from client applications. Since every printer manufacturer does things differently, printing can be very complicated, and has always been a hard issue in the UNIX world for this reason. By providing a portable, modular printing layer, CUPS brings printing for UNIX into the modern age. It applies open standards for network printing through the Internet Printing Protocol (IPP) and uses platform-independent drivers (Postscript Printer Definition, PPD) to print. Today, CUPS is the default printing system for a large number of Linux distributions (Ubuntu, Fedora, etc.) and UNIX-based operating systems. This book assumes that you have no knowledge of CUPS. It starts by telling you the story of how CUPS came to be and why there is such excitement about it. We then move on to installing, compiling, and managing your print network. Haven't you struggled to find the right directives for your printer? Enough of that search, this book will tell you where to find what. Not only that, but widely used directives and their uses are explained here along with directions to use them. There is more: you can learn how to manage the ever increasing print job load, set up your clients, and manage users. All this done, you will learn how to monitor, filter, and secure your CUPS server. A practical tutorial to installing, managing, and securing this powerful printing system Approach This book takes a tutorial approach and each chapter contains step-wise instructions to perform specific tasks. Who this book is for This book is for Linux/Unix System Administrators interested in designing and setting up a CUPS network and provides enough knowledge to understand how the technology works, make decisions about deployment, and then implement a stable work environment. No knowledge in CUPS is required but readers need to be comfortable with working in the Linux/Unix environment. On the whole, readers should have basic knowledge of the Linux environment.
eBook
High-Throughput Screening of Multimetal Sulfides-Modified g-C.sub.3N.sub.4 for Degradation of Organic Contaminations Based on Ink-Jet Printing Technology
In this study, a novel method combining microplate fluorescence imaging (FI) and high-throughput screening (HTS) technology was applied to screen and evaluate the multicomponent metal (Zn, Cd, Ni) sulfides-modified g-C.sub.3N.sub.4 with high-activity photocatalytic performance. Glass screen printing was creatively used in preparing a photocatalytic reaction microplate containing 225 independent micro-reaction chambers ([mu]RCs) as experiment carriers. A photocatalyst chip comprising 225 Zn.sub.xCd.sub.yNi.sub.1-x-yS/g-C.sub.3N.sub.4 multicomponent photocatalysts was made via chemical ink-jet printing (IJP) technology, at last 23 high-efficiency M.sub.3S/g-C.sub.3N.sub.4were screened out from the photocatalyst chip by the optical density (OD) method. Graphic
Journal Article