scholarly journals 3D printing of composite reflectors for enhanced light collection in scintillation detectors

2021 ◽  
Author(s):  
Petr Sokolov ◽  
Dmitrii Komissarenko ◽  
Georgy Dosovitskiy ◽  
Mikhail Korzhik
Keyword(s):  
3D Printing ◽  
Low Cost ◽  
Formation Rate ◽  
Light Collection ◽  
Staircase Effect ◽  
Materials Used ◽  
Scintillator Detectors ◽  
Reflecting Surfaces ◽  
First Time ◽  
3D Printing Technique

<div>The present study deals with the fabrication of light-reflecting materials used in pixelated scintillator detectors. For the first time, the reflecting surfaces for pixels of different sizes (from 0.8 to 3.2 mm) were obtained via a low-cost DLP 3D printing technique. The material for the reflectors was the new composite of transparent ultraviolet light-cured resin and TiO<sub>2</sub> as a light-scattering filler. It was observed that TiO<sub>2</sub> showed better performance compare to other pigments such as BaSO<sub>4</sub>, hBN or cubic zirconia. The object formation rate was about 1 cm per hour with the possibility to produce several parts simultaneously that simplifies the wrapping procedure. It was found that the regular grooves pattern of the fabricated parts (staircase effect) could increase a light collection from a scintillator. The reflective properties of such surfaces were comparable to conventional reflection coating (e.g., Teflon wrapping).<br></div>Presented at the 2019 IEEE NSS & MIC conference, Manchester, UK. 14 pages, 12 figures, 1 table. Journal reference: Optical Materials V. 108, October 2020, p. 110393.

scholarly journals 3D printing of composite reflectors for enhanced light collection in scintillation detectors

2021 ◽  
Author(s):  
Petr Sokolov ◽  
Dmitrii Komissarenko ◽  
Georgy Dosovitskiy ◽  
Mikhail Korzhik
Keyword(s):  
3D Printing ◽  
Low Cost ◽  
Formation Rate ◽  
Light Collection ◽  
Staircase Effect ◽  
Materials Used ◽  
Scintillator Detectors ◽  
Reflecting Surfaces ◽  
First Time ◽  
3D Printing Technique

<div>The present study deals with the fabrication of light-reflecting materials used in pixelated scintillator detectors. For the first time, the reflecting surfaces for pixels of different sizes (from 0.8 to 3.2 mm) were obtained via a low-cost DLP 3D printing technique. The material for the reflectors was the new composite of transparent ultraviolet light-cured resin and TiO<sub>2</sub> as a light-scattering filler. It was observed that TiO<sub>2</sub> showed better performance compare to other pigments such as BaSO<sub>4</sub>, hBN or cubic zirconia. The object formation rate was about 1 cm per hour with the possibility to produce several parts simultaneously that simplifies the wrapping procedure. It was found that the regular grooves pattern of the fabricated parts (staircase effect) could increase a light collection from a scintillator. The reflective properties of such surfaces were comparable to conventional reflection coating (e.g., Teflon wrapping).<br></div>Presented at the 2019 IEEE NSS & MIC conference, Manchester, UK. 14 pages, 12 figures, 1 table. Journal reference: Optical Materials V. 108, October 2020, p. 110393.

scholarly journals Universal CubeSat Platform Design Technique

2018 ◽  
Vol 179 ◽  
pp. 01002
Author(s):  
Zhiyong Chen
Keyword(s):  
3D Printing ◽  
System Development ◽  
Low Cost ◽  
Fem Simulation ◽  
Frame Structure ◽  
Scientific Impact ◽  
Advantages And Disadvantages ◽  
Small Parts ◽  
3D Printing Technique ◽  
Printing Techniques

This article summarizes cubesat technology, provides examples of their scientific impact, and describes the design and the manufacturing of a Cubesat platform. As for the design of the overall frame structure of the CubeSat, we have searched a lot of literature and consulted many predecessors' designs, and collected many satellite structure images. After analyzing the data, we aimed at all kinds of different structures’ advantages and disadvantages, finally we got a best design. It is a satellite of cubic shape (10 cm per side), weighing approximately 1kg, based on the creation of a central body made of different material using the 3D-Printing techniques. The 3D-Printing technique has several advantages including fast implementation, accuracy in manufacturing small parts and low cost. Moreover, concerning the construction of a small satellite, this technique is very useful thanks to the accuracy achievable in details, which are sometimes difficult and expensive to realize with the use of tools machine. The structure must be able to withstand the launch loads. For this reason, several simulations using an FEM simulation and an intensive vibration test campaign will be performed in the system development and test phase.

Could the Old Poly(methylmethacrylate) Face Arrising Challanges of New Advanced Technologies for Dental Prosthesis Manufacturing?

2017 ◽  
Vol 68 (9) ◽  
pp. 2102-2107 ◽  
Author(s):  
Eugenia Eftimie Totu ◽  
Corina Marilena Cristache
Keyword(s):  
3D Printing ◽  
Low Cost ◽  
In Vivo Studies ◽  
Basic Material ◽  
Aesthetic Appearance ◽  
Printing Technique ◽  
Reliable Solution ◽  
Contamination Wear ◽  
3D Printing Technique

The biocompatibility, relatively low cost and excellent aesthetic appearance of polymer Poly(methyl methacrylate) (PMMA) makes it the material of choice for fabricating partially and complete dentures. Nowadays the emerging 3D printing technique imposed itself as reliable solution for obtaining dental devices. However, extensive usage of such technique is still limited due to the materials available. Despite PMMA�s drawbacks, mainly related to bacterial contamination, wear and mechanical failures, composite polymeric matrix has issued high interest lately. An important improvement in basic material properties have been achieved due to the inclusion of nanosystems, either nanoparticles or nanotubes. The newly shown versatility of reinforced PMMA sustains it as the best alternative for stereolithography (3D printing) technique. This paper highlights the improvements of PMMA by adding different type of nanofillers. Therefore, prospective randomized clinical in vivo studies with the use of biocompatible tested modified filled PMMA and modern technologies should be performed.

Application of Fused Deposition Modelling (FDM) Method of 3D Printing in Drug Delivery

2017 ◽  
Vol 23 (3) ◽  
pp. 433-439 ◽  
Author(s):  
Jingjunjiao Long ◽  
Hamideh Gholizadeh ◽  
Jun Lu ◽  
Craig Bunt ◽  
Ali Seyfoddin
Keyword(s):  
Drug Delivery ◽  
3D Printing ◽  
Low Cost ◽  
Three Dimensional ◽  
Fused Deposition Modelling ◽  
Layer By Layer ◽  
Fused Deposition ◽  
Accurate Dose ◽  
Drug Delivery Devices ◽  
3D Printing Technique

Three-dimensional (3D) printing is an emerging manufacturing technology for biomedical and pharmaceutical applications. Fused deposition modelling (FDM) is a low cost extrusion-based 3D printing technique that can deposit materials layer-by-layer to create solid geometries. This review article aims to provide an overview of FDM based 3D printing application in developing new drug delivery systems. The principle methodology, suitable polymers and important parameters in FDM technology and its applications in fabrication of personalised tablets and drug delivery devices are discussed in this review. FDM based 3D printing is a novel and versatile manufacturing technique for creating customised drug delivery devices that contain accurate dose of medicine( s) and provide controlled drug released profiles.

3D Printing of High Voltage Printed Wiring Boards

2016 ◽  
Vol 2016 (DPC) ◽  
pp. 000542-000565
Author(s):  
Eric MacDonald ◽  
Ryan Wicker ◽  
David Espalin ◽  
Andy Kwas ◽  
Peter Ruby Craig Kief
Keyword(s):  
3D Printing ◽  
Attitude Control ◽  
Conceptual Models ◽  
Low Cost ◽  
El Paso ◽  
Pulsed Plasma ◽  
University Of Texas ◽  
Supply Chain Logistics ◽  
End Use ◽  
Materials Used

In the last decade, research has focused on 3D printing for not only creating conceptual models but functional end-use products as well. As patents for 3D printing expire, new low cost desktop systems are being adopted more widely. This trend is leading to products being fabricated locally and improving supply chain logistics. However, currently low cost 3D printing is limited in the number of materials used simultaneously in fabrication and consequently is confined to fabricating enclosures and conceptual models. For additively manufactured end-use products to be useful, supplementary features and functionalities will need to be incorporated in to the final structures in terms of electronic, electromechanical, electromagnetic, thermodynamic, and optical content. The University of Texas at El Paso has recently been reporting on embedding electronic components and electrical interconnect into 3D printed structures either by interrupting the process or by inserting the additional content after the structure has been built. However, only until recently and with an investment from the presidential initiative on Additive Manufacturing “America Makes” has there been a concentrated research focus on developing technology that produces multi-functionality. This presentation will describe a project in which copper wires were used to supply a short burst of energy at high voltages in order to activate electro-propulsion. Pulsed Plasma Thursters provided by Busek were demonstrated where one joule of energy was supplied at 2000 volts in order to ablate the thruster in a vacuum and provide precise micro-newton-levels of force - as required for attitude control in small and nano satellites.

scholarly journals 3D Printing in Drug Delivery and Biomedical Applications: A State-of-the-Art Review

Compounds ◽  
2021 ◽  
Vol 1 (3) ◽  
pp. 94-115
Author(s):  
Muhammad Arif Mahmood
Keyword(s):  
3D Printing ◽  
Drug Transport ◽  
Fused Deposition Modeling ◽  
New Technology ◽  
Pharmaceutical Ingredients ◽  
Fused Deposition ◽  
Printing Technique ◽  
Life Threatening ◽  
Materials Used ◽  
3D Printing Technique

Personalized medicines are gaining popularity day by day as they empower patient genomics and assist in improved drug design with minimum side effects. Various dosages can be combined into one dose that fits the patient’s requirements. For this purpose, 3D printing is a new technology to produce medicine based on patient needs. It utilizes controlled devices to prepare active pharmaceutical ingredients (API) in a layer-wise fashion to develop an appropriate tailored drug transport structure. It contains numerous methods, including inkjet printing and fused deposition modeling. For this purpose, scientists have used various materials, including polyvinyl alcohol, polylactic acid and polycaprolactone. These materials have been applied to design and develop forms that are suitable for tuning the drug release. Different forms of dosages, including tablets (immediate and pulsatile release) and transdermic dosages, can be produced using the 3D printing technique. Furthermore, the 3D printing technique can also be used to prepare customized medicines to treat life-threatening diseases. In the case of patients needing various medicines, a 3D printer can be used to design and manufacture only one dosage incorporating different medicines. This article reviewed 3D printing utilization for customized medicines based on one’s needs. Various methods and materials used in medicine 3D printing were discussed with their applications.

A Novel Microscale 3D Printing Based on Electric-Field-Driven Jet Deposition

2018 ◽  
Author(s):  
Lei Qian ◽  
Hongbo Lan ◽  
Guangming Zhang ◽  
Jiawei Zhao ◽  
Shuting Zou
Keyword(s):  
3D Printing ◽  
Electric Field ◽  
Low Cost ◽  
Experimental Studies ◽  
Counter Electrodes ◽  
Micro Scale ◽  
Multi Scale ◽  
Printing Technique ◽  
Jet Printing ◽  
3D Printing Technique

This paper presents an electric-field-driven (EFD) jet deposition 3D printing technique, which is based on the induced electric field and electrohydrodynamic (EHD) cone-jetting behavior. Unlike the traditional EHD-jet printing with two counter electrodes, the EFD jet 3D printing only requires a nozzle electrode to induce an electric field between the nozzle and the target substrate. Taking into account both printing accuracy and printing efficiency, two novel working modes which involve pulsed cone-jet mode and continuous cone-jet mode, are proposed for implementing multi-scale 3D printing. In this work, significant relationships between the printing results and process parameters (voltage, air pressure, pulse duration time, and stage velocity) were investigated to guide the reliable printing in both working modes. Furthermore, the experimental studies were carried out to demonstrate the capabilities and advantages of the proposed approach, which included the suitability of various substrate, the capacity of conformal printing, and the diversity of the compatible materials. Finally, four typical printing results were provided to demonstrate the feasibility and effectiveness of the proposed technology for micro-scale 2D patterning and macro/microstructures multi-scale fabrication. As a result, this research provides a novel micro-scale 3D printing technique with low cost, high resolution and good generalizability. The breakthrough technique paves a way for implementing highresolution 3D printing, especially for multi-scale and multimaterial additive manufacturing.

Custom Designed Orthodontic Attachment Manufactured Using a Biocompatible 3D Printing Material

2017 ◽  
Vol 54 (4) ◽  
pp. 757-758
Author(s):  
Riham Nagib ◽  
Camelia Szuhanek ◽  
Bogdan Moldoveanu ◽  
Meda Lavinia Negrutiu ◽  
Cosmin Sinescu ◽  
...  
Keyword(s):  
3D Printing ◽  
Treatment Planning ◽  
Computer Tomography ◽  
Volumetric Data ◽  
Impacted Teeth ◽  
3D Printing Technology ◽  
Custom Design ◽  
Custom Made ◽  
Materials Used ◽  
Orthodontic Forces

Treatment of impacted teeth often implies placing a bonded attachment and using orthodontic forces to move the tooth into occlusion. The aim of the paper is to describe a novel methodology of manufacturing orthodontic attachments for impacted teeth using the latest CAD software and 3D printing technology. A biocompatible acrylic based resin was used to print a custom made attachment designed based on the volumetric data aquired through cone bean computer tomography. Custom design of the attachment simplified clinical insertion and treatment planning and 3D printing made its manufacturing easier. Being a first trial, more reasearch is needed to improve the methodology and materials used.

scholarly journals UV Inscription and Pressure Induced Long-Period Gratings through 3D Printed Amplitude Masks

Sensors ◽  
2021 ◽  
Vol 21 (6) ◽  
pp. 1977
Author(s):  
Ricardo Oliveira ◽  
Liliana M. Sousa ◽  
Ana M. Rocha ◽  
Rogério Nogueira ◽  
Lúcia Bilro
Keyword(s):  
State Of The Art ◽  
Low Cost ◽  
Resonance Wavelength ◽  
Complex Structures ◽  
Pressing Method ◽  
Long Period ◽  
Long Period Gratings ◽  
3D Printed ◽  
Mechanical Pressing ◽  
First Time

In this work, we demonstrate for the first time the capability to inscribe long-period gratings (LPGs) with UV radiation using simple and low cost amplitude masks fabricated with a consumer grade 3D printer. The spectrum obtained for a grating with 690 µm period and 38 mm length presented good quality, showing sharp resonances (i.e., 3 dB bandwidth < 3 nm), low out-of-band loss (~0.2 dB), and dip losses up to 18 dB. Furthermore, the capability to select the resonance wavelength has been demonstrated using different amplitude mask periods. The customization of the masks makes it possible to fabricate gratings with complex structures. Additionally, the simplicity in 3D printing an amplitude mask solves the problem of the lack of amplitude masks on the market and avoids the use of high resolution motorized stages, as is the case of the point-by-point technique. Finally, the 3D printed masks were also used to induce LPGs using the mechanical pressing method. Due to the better resolution of these masks compared to ones described on the state of the art, we were able to induce gratings with higher quality, such as low out-of-band loss (0.6 dB), reduced spectral ripples, and narrow bandwidths (~3 nm).

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