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Perspectives of 3D Printing Technology on Polymer Composites for Biomedical Applications
Published in Savaş Kaya, Sasikumar Yesudass, Srinivasan Arthanari, Sivakumar Bose, Goncagül Serdaroğlu, Materials Development and Processing for Biomedical Applications, 2022
It has also been projected that 3D printing in the field of medicine will be valued at $3.5 billion by 2025, much more than the worth of $713.3 million in 2016 [70]. The industry’s compound annual growth rate is supposed to reach 17.7% between 2017 and 2025. The major progress in the production of 3D polymeric components is focused effectively in the (a) powder bed fusion processes, (b) extrusion-based technologies, and (c) photopolymer-based printing methods. However, the supreme prospect for 3D bio-printing lies in its possibility on fabricating a fully functioning organ that could be transplanted into a human body. The choice of a suitable fabrication technique is also a challenging position. Polymers have high geometric complexity, but the requirements of better mechanical strength are often limiting the applications in AM. For low cost and processing flexibility, the polymers in a liquid state having a low melting point and low molecular weight are highly preferable to use in AM. At present, the key raw material for 3D printing is polymers, compounds that are largely synthetic and which use inks to create three-dimensional objects in accordance with the models computers use to execute the three-dimensional printing. In future research, various functional materials will be combined to achieve preferred mechanical strength and biocompatibility, which is a promising way to solve the present challenges in AM with polymer products.
Low Loss Dielectric Materials and Their Applications
Published in Song Sun, Wei Tan, Su-Huai Wei, Emergent Micro- and Nanomaterials for Optical, Infrared, and Terahertz Applications, 2023
3D printing. Besides the four main stream fabrication methods mentioned earlier, we would like to briefly discuss another potential method—3D printing. Also known as addictive manufacturing or rapid prototyping, the key advantage of 3D printing is the ability to produce very complex three-dimensional shapes or geometries from a CAD model that would be otherwise impossible to construct by other fabrication techniques, which is very attractive for metamaterials and metasurface applications. So far, 3D printing has made a great commercial success in various industry sectors including aerospace, automotive, and medical industries, and continues to undergo a rapid expansion. However, there are two limitations for this method. First, the current 3D printing technology only works for a few particular types of materials (e.g., polymers, metals, ceramics), and is not applicable for high refractive index semiconductor materials (e.g., Si, Ge, GaAs). Second, the resolution of 3D printing is generally around a few micrometers scale, which might be capable of constructing meta-structures in the far infrared or terahertz regime since the size of the unit meta-atom is at a few hundred micrometers scale. However, for optical or near infrared regime, the size of the unit cell is typically at nanometer scale, therefore requiring a much higher resolution of just a few nanometers and is beyond the capability of the current 3D printing technology, even with the sophisticate two-photon lithography (~ 100 nm resolution) [19,20]. Future research should focus on overcoming these two obstacles to enable a full functionality of 3D printing in dielectric materials for optical, infrared, and terahertz applications.
Interview Preparedness
Published in G.K. Awari, C.S. Thorat, Vishwjeet Ambade, D.P. Kothari, Additive Manufacturing and 3D Printing Technology, 2021
G.K. Awari, C.S. Thorat, Vishwjeet Ambade, D.P. Kothari
Response: 3D printing is the process of constructing a three-dimensional model by adding material automatically rather than removing material as in case of drilling or machining operatsons. This technique is also known as additive manufacturing, which was first implemented at the end of the 1980s and its first use for commercial operation was started as a quick prototyping tool in the automotive and aerospace industries. 3D Systems were developed by Charles Hull, who later co-founded, and invented a stereo lithography (SLA) method.3D Systems were launched in1988 as the first commercial 3D printer using SLA technology.
Aspects of 3D printed drugs
Published in Journal of Medical Engineering & Technology, 2020
Debojit Bhattacharjee, Vivek Srivastava
Three-dimensional (3D) printing is a method in which materials including plastics, metals, composites, polymers, liquids and even tissue cells, are created by melting or depositing into layers for the development of 3D models under computer control, it is also referred as additive manufacturing. Such structures may be of almost any shape or configuration and are constructed from a 3D model as represented in the CAD [1]. The 3D printing process was first developed in the 1980s, and ever since 3D printing has been used in many areas, such as engineering, medical centre, the food industry and recently in drug research and development [2]. Despite the pharmaceutical industry shifting from industrial manufacturing into customised medication, 3D printing has now become a part of the development process for medications, as the potential output promises of on-demand printed drugs, to customised doses, with increased productivity and cost-effectiveness, and for the first time in 2015 USFDA had already approved 3D printed drugs [3]. Throughout the healthcare industry, 3D printing is anticipated to be extremely revolutionary. Main advantages of 3D printing are the development of tiny quantities of medicines each with a personalised dose, form, scale and delivery characteristics. In addition, the manufacture of drugs in this way would render the notion of personalised medicines a possibility. In the shorter term, 3D printing may be applied in the product discovery cycle, from pre-clinical research and clinical trials to front-line patient treatment.
New concept of 3D printed bone clip (polylactic acid/hydroxyapatite/silk composite) for internal fixation of bone fractures
Published in Journal of Biomaterials Science, Polymer Edition, 2018
Yeung Kyu Yeon, Hae Sang Park, Jung Min Lee, Ji Seung Lee, Young Jin Lee, Md. Tipu Sultan, Ye Bin Seo, Ok Joo Lee, Soon Hee Kim, Chan Hum Park
Three-dimensional (3D) printing is an additive manufacturing process to construct 3D objects from a digital model. Lately, this technique is a rapidly growing trend in tissue engineering owing to its capability to create patient-specific scaffolds with well-controlled porous architecture and the capacity of printing cells in 3D configurations [5]. In orthopedic surgery, 3D printing was mainly applied in the areas of anatomical models for diagnosis and surgical planning, and customized implants and cast [6,7]. With the 3D printed model, the preoperative situation of complex fractures is easier to understand. It also provides surgeons with effective preoperative planning and preoperative realistic simulation. Furthermore, 3D printing technique enables the production of patient-specific implants and cast that precisely matches the patient’s contours, such as the reconstruction of a range of bone fractures; pelvic bone resection, femoral and tibial hemiarthroplasty [6–10].
Effects of drying method on the stability and quality of post-processing of 3D-printed processed cheese
Published in Drying Technology, 2023
Yiqiu Deng, Kewei Cheng, Xusheng Shao, Xinlin Dong, He Jiang, Gongnian Xiao
Three-dimensional (3D) printing is an additive manufacturing technology that creates a 3D physical structure, layer by layer, from a predesigned digital model.[1,2] In recent years, 3D printing technology has attracted considerable attention in food-related fields, such as food design and personalized nutritional formulas because of its advantage of personalized customization.[3] 3D food printing can achieve complex and delicate shapes while also producing foods based on individual nutritional needs.[4] Therefore, 3D printing is a promising food processing method.