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3D Printing Policy To create an object for printing, you may use the 3D modeling software available on the public computers or visit sites with objects from the public domain, such as Thingiverse.com. Please review the library policy. 1. This service is available to Harborfields Public Library Teen and Adult card holders in good standing. 2. All files will be reviewed by library staff to ensure compliance with this agreement and all other library policies prior to printing. 3. All files will be printed by library staff. 4. Only one job may be submitted at a time. 5. All files submitted must be in the “.stl” format. 6. Items are limited in size to 9 x 6 inches and 7 inches in height. 7. Colors are subject to availability. (See Teen’Scape staff for current choices). 8. Your item must be able to print in 7 hours or less. 9. We will contact you when your item is ready to be picked up. Any items that have not been picked up become property of the library after two weeks. 10. There is a charge of 25 cents for each 30 minutes of printing, payable upon pickup. 11. As this is a new technology and service, 3D Printing rules may change at any time. The 3D printer may be used only for lawful purposes. Library users may not create material that is: 1. Prohibited by local, state or federal law. 2. Unsafe, harmful, dangerous or poses an immediate threat to the well-being of others. 3. An object that may function as a weapon or part of a weapon. 4. Obscene or otherwise inappropriate for the library environment. 5. In violation of another’s intellectual property rights. 6. Copyrighted, patented, trademarked, registered..

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Real-Time Kinematics Coordinated Swarm Robotics for Construction 3D Printing
1 Real-time Kinematics Coordinated Swarm Robotics for Construction 3D Printing Darren Wang and Robert Zhu, John Jay High School Abstract Architectural advancements in housing are limited by traditional construction techniques. Construction 3D printing introduces freedom in design that can lead to drastic improvements in building quality, resource efficiency, and cost. Designs for current construction 3D printers have limited build volume and at the scale needed for printing houses, transportation and setup become issues. We propose a swarm robotics-based construction 3D printing system that bypasses all these issues. A central computer will coordinate the movement and actions of a swarm of robots which are each capable of extruding concrete in a programmable path and navigating on both the ground and the structure. The central computer will create paths for each robot to follow by processing the G-code obtained from slicing a CAD model of the intended structure. The robots will use readings from real-time kinematics (RTK) modules to keep themselves on their designated paths. Our goal for this semester is to create a single functioning unit of the swarm and to develop a system for coordinating its movement and actions. Problem Traditional concrete construction is costly, has substantial environmental impact, and limits freedom in design. In traditional concrete construction, workers use special molds called forms to shape concrete. Over a third of the construction cost of a concrete house stems from the formwork alone. Concrete manufacturing and construction are responsible for 6% – 8% of CO2 emissions as well as 10% of energy usage in the world. Many buildings use more concrete than necessary, and this stems from the fact that formwork construction requires walls, floors, and beams to be solid.
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Carbon Nanotubes and Graphene As Additives in 3D Printing Lara A
University of Massachusetts Amherst ScholarWorks@UMass Amherst Chemistry Department Faculty Publication Series Chemistry 2016 Carbon Nanotubes and Graphene as Additives in 3D Printing Lara A. Al-Hariri University of Massachusetts Amherst Branden Leonhardt Florida State University Mesopotamia Nowotarski Florida State University James Magi Florida State University Kaelynn Chambliss Florida State University See next page for additional authors Follow this and additional works at: https://scholarworks.umass.edu/chem_faculty_pubs Part of the Chemistry Commons, and the Education Commons Recommended Citation Al-Hariri, Lara A.; Leonhardt, Branden; Nowotarski, Mesopotamia; Magi, James; Chambliss, Kaelynn; Venzel, Thaís; Delekar, Sagar; and Acquah, Steve, "Carbon Nanotubes and Graphene as Additives in 3D Printing" (2016). Carbon Nanotubes - Current Progress of their Polymer Composites. 1448. https://doi.org/10.5772/63419 This Article is brought to you for free and open access by the Chemistry at ScholarWorks@UMass Amherst. It has been accepted for inclusion in Chemistry Department Faculty Publication Series by an authorized administrator of ScholarWorks@UMass Amherst. For more information, please contact [email protected]. Authors Lara A. Al-Hariri, Branden Leonhardt, Mesopotamia Nowotarski, James Magi, Kaelynn Chambliss, Thaís Venzel, Sagar Delekar, and Steve Acquah This article is available at ScholarWorks@UMass Amherst: https://scholarworks.umass.edu/chem_faculty_pubs/1448 PUBLISHED BY World's largest Science, Technology & Medicine
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3D Printing Technology Applications in Occupational Therapy
Open Access Physical Medicine and Rehabilitation - International Special Article – Occupational Therapy 3D Printing Technology Applications in Occupational Therapy Ganesan B1,2, Al-Jumaily A1 and Luximon A2* 1Faculty of Engineering and IT, University of Technology Abstract Sydney, Australia With the rapid development of three dimensional technologies in last three 2The Hong Kong Polytechnic University, Hong Kong decades, it is widely spread worldwide and made dramatic impact into various *Corresponding author: Luximon Ameersing, The fields such as medicine, dentistry, other health care and engineering area. The Hong Kong Polytechnic University, Hung Hom, Hong promising future of this 3D printing technology made new future in the medicine Kong to design the various hard tissues, models of body parts, implants, orthosis and prosthesis with high accuracy. This paper focuses on the possibilities Received: May 26, 2016; Accepted: June 06, 2016; and benefits of 3D printing technology in the occupational therapy research Published: June 09, 2016 or clinical practice and presents the different procedures for creating different types of three dimensional physical models. Keywords: 3D printing; Occupational Therapy; Three dimensional Printing; Assistive devices Introduction 3D three-dimensional printing (3DP), Ink Jet printing techniques, vacuum casting and milling (VCM), two-photon polymerization Three dimensional (3D) printing is a novel emerging technology (TPP), direct laser metal sintering (DLMS) [6, 14]. In medicine, there widely used for various fields such as medical, engineering, are different types of materials are used to create rapid prototype educations, and other industrial areas. It is the process of making model of medical devices and implants such as stainless steel, Cobalt three dimensional physical models by using 3D software, computer, Chromium alloys (Co Cr), titanium (Ti) alloys, Polycaprolactone and printer.
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Challenges in the Optimization of 3D Printing of Zirconia Based Pastes By
Challenges in the optimization of 3D printing and robocasting processes using zirconia based pastes 2018 NanoMatLab/Biomat Meeting Robocasting - Introduction • Layer-by-layer deposition of ceramic slurries (paste) through a nozzle (extrusion). • Computer numerical control over nozzle position coordinates and piston movement. • Nozzle diameter ranging from 0.03mm to 2mm. Freeforming 24h. Ceramic parts with bespoke, intricate geometries can be produced quickly and inexpensively. Picture source: [1] Substrate bed heated to 30 [1], [2], [3] Robocasting – Products [4] [1] Robocasting - Slurries • Slurries must be pseudoplastic to flow through the nozzle. • Slurry compositions are kept close to the dilatant ratio. Dilatant Capillarity Adapted from [4] [2] Adapted from [2] • Dilatant mass maintains structural integrity after minimal drying time. • Heated bed speeds up the pseudoplastic to dilatant transition. [2], [4] Robocasting - Slurries • Slurries of high solid fraction, usually 50-65 vol.% ceramic powder. • 35-50 vol.% volatile solvent (usually water). • Higher ceramic loadings decrease sintering shrinkage and cracking. • Highly loaded slurries are prone to agglomeration, that can cause nozzle clogging during extrusion. • Tested slurries: Slurry designation Zirconia powder Powder/dispersant loading weight ratio X High High Y Medium Low Z Low Low [2], [3] 3D Printer Commercial open source 3D printer “Lulzbot MINI” Syringe Hypodermic (extruder) + needle (nozzle) Printing parameters Optimization - Example Movement Extruded slurry Increase flow
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Building 3D-Structures with an Intelligent Robot Swarm
BUILDING 3D-STRUCTURES WITH AN INTELLIGENT ROBOT SWARM A Dissertation Presented to the Faculty of the Graduate School of Cornell University in Partial Fulﬁllment of the Requirements for the Degree of Master of Science by Yiwen Hua May 2018 c 2018 Yiwen Hua ALL RIGHTS RESERVED BUILDING 3D-STRUCTURES WITH AN INTELLIGENT ROBOT SWARM Yiwen Hua, M.S. Cornell University 2018 This research is an extension to the TERMES system, a decentralized au- tonomous construction team composed of swarm robots building 2.5D struc- tures1, with custom-designed bricks. The work in this thesis concerns 1) im- proved mechanical design of the robots, 2) addition of heterogeneous building material, and 3) an extended algorithmic framework to use this material. In or- der to lower system cost and maintenance, the TERMES robot is redesigned for manufacturing in low-end 3D printers and the new drive train, including motor adapters and pulleys, is based on 3D printed components instead of machined aluminum. The work further extends the original system by enabling construc- tion of 3D structures without added hardware complexity in the robots. To do this, we introduce a reusable, spring-loaded expandable brick which can be eas- ily manufactured through one-step casting and which complies with the origi- nal robots and bricks. This thesis also introduces a decentralized construction algorithm that permits an arbitrary number of robots to build overhangs over convex cavities. To enable timely completion of large-scale structures, we also introduce a method by which to optimize the transition probabilities used by the robots to traverse the structure.
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A Study on 3D Printing and Its Effects on the Future of Transportation
CAIT-UTC-NC19 A Study on 3D Printing and its Effects on the Future of Transportation September 2018 Submitted by: Omar Jumaah, Doctoral Candidate Department of Mechanical and Aerospace Engineering Rutgers, The State University of New Jersey 98 Brett Road Piscataway, NJ 08854-8058 [email protected] External Project Manager Patrick Szary, PhD Associate Director, CAIT Central Administration Rutgers, The State University of New Jersey 100 Brett Road Piscataway, NJ 08854-8058 [email protected] In cooperation with Rutgers, The State University of New Jersey & State of Department of Transportation & U.S. Department of Transportation Federal Highway Administration i Disclaimer Statement The contents of this report reflect the views of the authors, who are responsible for the facts and the accuracy of the information presented herein. This document is disseminated under the sponsorship of the Department of Transportation, University Transportation Centers Program, in the interest of information exchange. The U.S. Government assumes no liability for the contents or use thereof. The Center for Advanced Infrastructure and Transportation (CAIT) is a National UTC Consortium led by Rutgers, The State University. Members of the consortium are the University of Delaware, Utah State University, Columbia University, New Jersey Institute of Technology, Princeton University, University of Texas at El Paso, Virginia Polytechnic Institute, and University of South Florida. The Center is funded by the U.S. Department of Transportation. ii CAIT-UTC-NC19 1. Report No. 2. Government Accession No. 3. Recipient’s Catalog No. CAIT-UTC-NC19 4. Title and Subtitle 5. Report Date A Study on 3D Printing and its Effects on the Future of Transportation September 2018 6.
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3D-Printed Photoactive Semiconducting Nanowire
Forum Article Cite This: ACS Appl. Nano Mater. 2020, 3, 969−976 www.acsanm.org 3D-Printed Photoactive Semiconducting Nanowire−Polymer Composites for Light Sensors † † † ‡ § ∥ Xin Shan, Pengsu Mao, Haoran Li, Thomas Geske, Divya Bahadur, Yan Xin, § † ‡ Subramanian Ramakrishnan, and Zhibin Yu*, , † Department of Industrial and Manufacturing Engineering, High-Performance Materials Institute, FAMU-FSU College of ‡ § Engineering, Materials Science and Engineering, Department of Chemical and Biomedical Engineering, FAMU-FSU College of ∥ Engineering, and National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32310, United States *S Supporting Information ABSTRACT: We demonstrated 3D-printed photoactive composites for light sensors. The composites consist of semiconducting polymer nanowires dispersed in an insulating polymer matrix through a thermo- or photocuring process. The nanowires formed percolated networks for charge-carrier collection at a very low nanowire volume concentration. Photodetectors had been fabricated with such composites and obtained a low leakage current density of 25 nA cm−2, a large conductivity change of 18025 times upon light irradiation (1 sun), and a high specific detectivity of 4.5 × 1010 Jones. The composite precursors before curing had been used as paints on different surfaces including wood, cardboard, and glass fiber cloth to create photoactive coatings on these surfaces. The precursors had also been used for 3D printing to create photoactive structures with a mechanical modulus of 4 GPa and an ultimate strength of 36 MPa. KEYWORDS: 3D printing, composite, semiconductor, photodetector, P3HT, nanowire ■ INTRODUCTION certain desired spectra of electromagnetic radiation, which is difficult to achieve if metallic or insulating composites are Polymer-based composites have been widely used as structural 14 components in the automotive, construction, and aerospace used.
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Nano Inks for Additive Manufacturing – a Safe-By-Design-Approach
ACHI 2017 : The Tenth International Conference on Advances in Computer-Human Interactions Nano Inks for Additive Manufacturing – A Safe-by-Design-Approach Katja Nau1, Tobias Müller1, Daniel J.B.S. Sampaio2, Steffen G. Scholz1 1Institute for Applied Computer Science 2School of Engineering – Guaratinguetá Karlsruhe Institute of Technology São Paulo State University (Unesp) Karlsruhe, Germany Guaratinguetá, Brazil e-mail: [email protected] e-mail: [email protected] Abstract—Additive manufacturing (AM) enables a new nanostructures such as carbon nanotubes, metal manufacturing paradigm, such as the rapid, distributive nanoparticles, and ceramics can meaningfully affect manufacture of complex 3D objects. Nanoparticles are in sintering features and final mechanical properties of the particular suitable for ink formulation of novel PolyJet inks to produced parts [6]. obtain functionalities embedded in the AM process. However, The addition of metal nanoparticles generally decreases the impact and interaction of nanomaterials on environment and human health is widely discussed today. This paper deals sintering temperatures, improves part density, and decreases with a safe-by-design-approach that is developed in this shrinkage and distortion of printed parts in comparison to context. micro-scale fillers [7]. Metal nanoparticles embedded into polymer materials can also provide improved electrical Keywords-additive manufacturing; nano safety; safe-by- conductivity in fabricated objects [8]. Incorporation of design; human-centred industrial technologie. carbon nanotubes in printing media offers a potential route to improving mechanical properties of the final parts and to I. INTRODUCTION increasing electrical and thermal conductivities [9]. The Additive manufacturing (AM) is a technique for creating addition of carbon nanotubes in bio-scaffolds can yield 3D objects by building up material, layer by layer, with the excellent enhancement of cell proliferation.
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Comprehensive Review on Modular Self-Reconfigurable Robot Architecture
International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 06 Issue: 04 | Apr 2019 www.irjet.net p-ISSN: 2395-0072 Comprehensive Review on Modular Self-Reconfigurable Robot Architecture Muhammad Haziq Hasbulah1, Fairul Azni Jafar2, Mohd. Hisham Nordin2 1Centre for Graduate Studies, Universiti Teknikal Malaysia Melaka, Hang Tuah Jaya, 76100 Durian Tunggal, Melaka, Malaysia 2Faculty of Manufacturing Engineering, Universiti Teknikal Malaysia Melaka, Hang Tuah Jaya, 76100 Durian Tunggal, Melaka, Malaysia ---------------------------------------------------------------------***--------------------------------------------------------------------- Abstract - Self-reconfigurable modular robot is a new film directed by William Don Hall. In this movie, a character approach of robotic system which involves a group of identical named Hiro create a lot of Microbots that able to be robotic modules that are connecting together and forming controlled by neurotransmitter. They are designed by Hiro to structure that able to perform specific tasks. Such robotic connect together to form various shapes and perform tasks system will allows for reconfiguration of the robot and its cooperatively Hall and Williams [3]. The idea of that movie structure in order to adapting continuously to the current concept is multiple robots that able to change shape in group needs or specific tasks, without the use of additional tools. being controlled by human thought. Nowadays, the use of this type of robot is very limited because The MSR robot is build based on the electronics components, it is at the early stage of technology development. This type of computer processors, and memory and power supplies, and robots will probably be widely used in industry, search and also they might have a feature for the robot to have an ability rescue purpose or even on leisure activities in the future.
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An Overview of 3D Printing Technologies for Soft Materials and Potential Opportunities for Lipid-Based Drug Delivery Systems
An Overview of 3D Printing Technologies for Soft Materials and Potential Opportunities for Lipid-based Drug Delivery Systems Kapilkumar Vithani1, Alvaro Goyanes2, Vincent Jannin3, Abdul W. Basit2,4 , Simon Gaisford2,4, Ben J. Boyd1,5* 1Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University (Parkville Campus), Parkville, Victoria 3052, Australia 2FabRx Ltd., 3 Romney Road, Ashford, Kent TN24 0RW, UK 3Gattefossé SAS, 36 Chemin de Genas, 69804 Saint-Priest, France 4UCL School of Pharmacy, University College London, 29-39 Brunswick Square, London, WC1N 1AX, UK 5ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Monash University (Parkville Campus), Parkville, Victoria 3052, Australia *Corresponding author: Ben J. Boyd Email: [email protected]; Phone: +61399039912 1 Abstract Purpose: Three-dimensional printing (3DP) is a rapidly growing additive manufacturing process and it is predicted that the technology will transform the production of goods across numerous fields. In the pharmaceutical sector, 3DP has been used to develop complex dosage forms of different sizes and structures, dose variations, dose combinations and release characteristics, not possible to produce using traditional manufacturing methods. However, the technology has mainly been focused on polymer-based systems and currently, limited information is available about the potential opportunities for the 3DP of soft materials such as lipids. Methods: This review paper emphasises the most commonly used 3DP technologies for soft materials such as inkjet printing, binder jetting, selective laser sintering (SLS), stereolithography (SLA), fused deposition modeling (FDM) and semi-solid extrusion, with the current status of these technologies for soft materials in biological, food and pharmaceutical applications.
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Graphene Oxide: an All-In-One Processing Additive for 3D Printing
Graphene oxide: an all-in-one processing additive for 3D printing Esther García-Tuñóna,b,*, Ezra Feildena, Han Zhenga, Eleonora D’Eliaa, Alan Leonga and Eduardo Saiza aCentre for Advanced Structural Ceramics, Department of Materials, Imperial College London, Royal School of Mines, Prince Consort Road, South Kensington, SW7 2BP, London, UK bMaterials Innovation Factory & School of Engineering, Harrison Hughes Building, Brownlow Hill, L69 3GH, University of Liverpool, Liverpool, UK *[email protected] ORCID Esther García-Tuñón: 0000-0001-9507-4501 Keywords: 2D colloids, processing, 3D printing, complex fluids, and oscillatory rheology Abstract Many 3D printing technologies are based on the development of inks and pastes to build objects through droplet or filament deposition (the latter also known as continuous extrusion, robocasting or direct ink writing). Controlling and tuning rheological behaviour is key for successful manufacturing using these techniques. Different formulations have been proposed but the search continues for approaches that are clean, flexible and robust and can be adapted to a wide range of materials. Here we show how graphene oxide (GO) enables the formulation of water-based pastes to print a wide variety of materials (polymers, ceramics and steel) using robocasting. This work combines flow and oscillatory rheology, to provide further insights into the rheological behaviour of suspensions combining GO with other materials. Graphene oxide can be used to manipulate the viscoelastic response enabling the formulation of pastes with excellent printing behaviour that combine shear thinning flow and a fast recovery of their elastic properties. These inks do not contain other additives just GO and the material of interest.
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1D Printing of Recyclable Robots
This article has been accepted for publication in a future issue of this journal, but has not been fully edited. Content may change prior to final publication. Citation information: DOI 10.1109/LRA.2017.2716418, IEEE Robotics and Automation Letters IEEE ROBOTICS AND AUTOMATION LETTERS. PREPRINT VERSION. ACCEPTED MAY, 2017 1 1D Printing of Recyclable Robots 1 2 3 4, Daniel Cellucci , Robert MacCurdy , Hod Lipson , and Sebastian Risi ∗ Abstract—Recent advances in 3D printing are revolutionizing manufacturing, enabling the fabrication of structures with un- precedented complexity and functionality. Yet biological systems are able to fabricate systems with far greater complexity using a process that involves assembling and folding a linear string. Here, we demonstrate a 1D printing system that uses an approach in- spired by the ribosome to fabricate a variety of specialized robotic automata from a single string of source material. This proof-of- concept system involves both a novel manufacturing platform that conﬁgures the source material using folding and a computational optimization tool that allows designs to be produced from the speciﬁcation of high-level goals. We show that our 1D printing system is able to produce three distinct robots from the same source material, each of which is capable of accomplishing a specialized locomotion task. Moreover, we demonstrate the ability of the printer to use recycled material to produce new designs, enabling an autonomous manufacturing ecosystem capable of repurposing previous iterations to accomplish new tasks. Fig. 1: 1D Robot Manufacturing System. Our 1D printer is Index Terms—Assembly, Mechanism Design, AI-Based Meth- able to fold specialized robots for different tasks on-demand, ods, Neural and Fuzzy Control all derived from a single generic strip of deformable source material (shown in gray) with pre-embedded actuators and I.
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