Article
Nanoscience & Nanotechnology
Futianchun Zhu, Yu He, Zefan Lu, Hongliang Fan, Tao Zhang
Summary: This paper introduces a novel concept of composite elastomers to provide flexible support for photocured thin films, allowing most photocurable resins to be used in microfluidic device fabrication. The rapid and simple fabrication process is expected to bridge the gap between academic research and industrial practice, greatly enriching material choices for diverse applications.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Biochemistry & Molecular Biology
A. S. Silva-Barroso, Catia S. D. Cabral, Paula Ferreira, Andre F. Moreira, Ilidio J. Correiaa
Summary: Bone is a vital tissue in the human body that serves various functions including protection of organs, support and locomotion, maintenance of homeostasis, and hematopoiesis. However, bone defects caused by traumas, diseases, and aging can hinder its self-regeneration capacity. To address this issue, researchers have developed 3D scaffolds using rapid prototyping techniques and composite materials with osteoinductive and osteoconductive properties. In this study, a new 3D scaffold was created by layer-by-layer deposition of a mixture of tricalcium phosphate (TCP), sodium alginate (SA), and lignin (LG). The incorporation of LG enhanced the mechanical strength of the scaffold and maintained its ability to support osteoblast adhesion, proliferation, and bioactivity. These findings highlight the potential of LG in the development of 3D scaffolds for bone regeneration.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Engineering, Mechanical
Chethan Savandaiah, Julia Maurer, Bernhard Plank, Georg Steinbichler, Janak Sapkota
Summary: This study investigates the effect of compression moulding on 3D printed composites to reduce voids and improve quality assurance. The findings show that post consolidation significantly reduces voids and improves mechanical properties.
RAPID PROTOTYPING JOURNAL
(2022)
Article
Polymer Science
Slawomir Blasiak, Pawel Andrzej Laski, Jakub Emanuel Takosoglu
Summary: The study aimed to design and produce a pneumatic directional control valve for controlling pneumatic drives, focusing on determining flow parameters and optimizing flow to achieve high performance and efficiency.
Review
Pharmacology & Pharmacy
Ana Garcia, Maria Victoria Cabanas, Juan Pena, Sandra Sanchez-Salcedo
Summary: This review explores the application of advanced bioceramics for bone regeneration, covering different types of materials, fabrication techniques, and the influence of biomolecules, drugs, or cells within scaffolds.
Review
Engineering, Mechanical
Fangfang Sun, Tianze Wang, Yong Yang
Summary: This review paper provides a comprehensive study of various types of HAp composite scaffold fabricated with RP technologies, introducing their potential applications in bone tissue engineering and discussing future research directions.
RAPID PROTOTYPING JOURNAL
(2022)
Article
Pharmacology & Pharmacy
Li Zhu, Shukun Zhang, Hui Zhang, Lei Dong, Yue Cong, Shanshan Sun, Xianghong Sun
Summary: This review highlights the importance of natural polysaccharides in hemostatic materials and the latest progress in new hemostatic composite materials, providing a reference for further research in this field.
JOURNAL OF DRUG DELIVERY SCIENCE AND TECHNOLOGY
(2021)
Review
Pharmacology & Pharmacy
Anuradha Biswal, Shuvendu S. Purohit, Sarat K. Swain
Summary: The review discusses the suitability and advantages of nanostructured chitosan-based composites for wound healing. It analyzes the wound healing properties of modified chitosan and its combination with nano-dimensional fillers. The use of chitosan as a bio-ink in 3D printing of wound dressing material is also examined.
JOURNAL OF DRUG DELIVERY SCIENCE AND TECHNOLOGY
(2023)
Article
Multidisciplinary Sciences
Carlie Rein, Mehmet Toner, Derin Sevenler
Summary: Soft lithography allows rapid prototyping of precise microfluidic features using a deformable elastomer like polydimethylsiloxane (PDMS). However, for applications where flexibility of PDMS is a drawback, more rigid materials like epoxy and glass have been proposed. Devices fabricated from epoxy and glass offer superior mechanical performance, feature resolution, and solvent compatibility compared to alternatives. This article presents a detailed step-by-step method for fabricating rigid microfluidic devices from soft lithography patterned epoxy and glass, demonstrating their use in high throughput cell focusing with rigid high aspect ratio spiral microchannels.
SCIENTIFIC REPORTS
(2023)
Article
Biochemistry & Molecular Biology
Xiaofeng Cao, Wufei Ge, Yihu Wang, Ming Ma, Ying Wang, Bing Zhang, Jianing Wang, Yanchuan Guo
Summary: In this study, 3D porous composite scaffolds made of MgNH4PO4·H2O and SrHPO4 were fabricated using 3D printing technique to improve radiopacity. The results showed that higher SrHPO4 contents led to higher radiopacity, with a content of 9.34% achieving radiopacity equivalent to a 6.8 mm Al ladder. The composite scaffolds exhibited sustainable degradation and released Mg, Sr, and P elements over a 28-day experiment period, showing potential for bone repair applications.
Article
Chemistry, Multidisciplinary
Timothe Maujean, Prakash Kannaboina, Adam I. Green, George M. Burslem
Summary: We developed a simple and rational method to rank lead-likeness of molecules using continuous evaluation functions, which has proven to be competitive against known methods and has helped in selecting promising candidate molecules for epigenetic applications.
CHEMICAL COMMUNICATIONS
(2023)
Article
Nanoscience & Nanotechnology
Lintao Zhang, Will Harrison, Mazher A. Yar, Shahin Mehraban, Stephen G. R. Brown, Nicholas P. Lavery
Summary: This study investigates the feasibility of using non-standard miniaturized tensile specimens (MTS) to characterize the total elongation and formability behavior of dual phase steels. The study establishes scaling rules for MTS to predict mechanical properties of steels obtained through rapid alloy prototyping (RAP) in the laboratory. The results provide confidence in using miniature tensile specimens to predict the formability of heterogeneous alloys such as DP steels.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Engineering, Mechanical
Mohamad Attar, Seher Selen Aydin, Aliye Arabaci, Ilven Mutlu
Summary: This study focuses on the production of mechanical meta-material samples for patient-specific skin grafts or cranial implants using rapid prototyping and replica techniques. The research found that non-destructive ultrasonic testing is a fast and reliable method, and the meta-material composites show important surface properties for skin grafts and cranial implants. The addition of reinforcement agents affects the hardness and elastic modulus of the materials, and auxetic surfaces exhibit a perfect fit with the curved surface of the skull.
RAPID PROTOTYPING JOURNAL
(2021)
Article
Engineering, Manufacturing
Saja Aabith, Richard Caulfield, Omid Akhlaghi, Anastasia Papadopoulou, Shervanthi Homer-Vanniasinkam, Manish K. Tiwari
Summary: Direct-write printing has been instrumental in additive manufacturing, especially in extrusion-based printing, expanding the range of materials and applications. However, the synthesis and preparation of printing inks for direct-write printing can be complex. This study develops a precise 3D printable polymer that allows for the easy prototyping of micrometre-scale silicone structures without the need for cleanroom facilities.
ADDITIVE MANUFACTURING
(2022)
Article
Materials Science, Ceramics
Claudia Paredes, Francisco J. Martinez-Vazquez, Antonia Pajares, Pedro Miranda
Summary: Innovative scaffolds were developed using a cartesian mesh of interpenetrated composite struts of PCL and beta-TCP, with ceramic preforms fabricated through Digital Light Processing and then sintered to create co-continuous composite scaffolds infused with molten PCL. The mechanical performance of the scaffolds was notably improved after incorporating the polymeric core, with the co-continuous architecture facilitating impregnation and enhancing the isotropy of the reinforcement provided by the core, despite increasing stresses in the ceramic.
CERAMICS INTERNATIONAL
(2021)
Article
Engineering, Manufacturing
Xin-Lin Wang, Bora Ha, Frank Andrew Manongi, Woo-Kyun Jung, Yusufu Abeid Chande Jande, Sung-Hoon Ahn
Summary: The proposed system combines the advantages of LoRa communication method and mesh network structure, reducing data loss in far-field wireless energy monitoring. It automatically controls node functions and adjusts system structure in real-time, improving energy monitoring quality and sustainability with standby equipment.
ADVANCES IN MANUFACTURING
(2021)
Article
Computer Science, Artificial Intelligence
Yunhan Kim, Taekyum Kim, Byeng D. Youn, Sung-Hoon Ahn
Summary: This research introduces an image-based deep transfer learning method for monitoring machining quality in laser-assisted micro-milling of glass. Experimental validation shows that this method has the best classification accuracy and is able to predict and improve machining quality.
JOURNAL OF INTELLIGENT MANUFACTURING
(2022)
Review
Green & Sustainable Science & Technology
Ji-Hyeon Song, Soo-Hong Min, Seung-Gi Kim, Younggyun Cho, Sung-Hoon Ahn
Summary: Significant advancements in nanomaterials and nanotechnology have driven research in various fields, leading to unexpected macroscopic phenomena and applications. However, the potential limitations of multi-functionalization call for research to explore different directions. Through enhancing performance, adding new properties, and considering multiple physics interactions, studies focus on sensors, actuators, energy harvesters, and solar cells. Efforts are directed towards increasing sensitivity, flexibility, and enabling wireless communication. Analysis of material trends, manufacturing processes, and useful fabrication methods aims to predict future research directions in sensing and multi-functional applications.
INTERNATIONAL JOURNAL OF PRECISION ENGINEERING AND MANUFACTURING-GREEN TECHNOLOGY
(2022)
Article
Computer Science, Artificial Intelligence
Hyungjung Kim, Woo-Kyun Jung, Young-Chul Park, Jae-Won Lee, Sung-Hoon Ahn
Summary: This paper proposes a method for sewing defect detection using deep learning and a pre-trained VGG-16 model. Experimental results show that the proposed method achieves 92.3% accuracy in detecting real defects, and further investigation on reducing computation time for real-time performance is conducted.
EXPERT SYSTEMS WITH APPLICATIONS
(2022)
Article
Materials Science, Textiles
Woo-Kyun Jung, Soo-Min Lee, Sung-Hoon Ahn, Juyeon Park
Summary: This study developed a multifunctional elbow brace using knitted shape memory alloy fabric, which provided both heat and pressure and increased the range of motion and blood flow in the elbow joint. The subjective evaluation and measurements of the brace demonstrated its applicability and positive effects, confirming the potential of smart textiles in wearable device development.
JOURNAL OF INDUSTRIAL TEXTILES
(2022)
Article
Materials Science, Multidisciplinary
Min-Soo Kim, Hye-Sung Lee, Younggyun Cho, Jae Kyung Heo, Ying-Jun Quan, Seung Woo Lee, Heui Jae Pahk, Sung-Hoon Ahn
Summary: This study proposes an IR light-driven SMA actuator that enhances light absorptance through the plasmonic effect, creating an optical meta-surface with sub-micrometer patterns. The absorptance tuning effect is evaluated through optics simulations, showing increased narrow-band IR light absorption by up to 55%. These actuators enable decoupled microscale actuation using UV and IR light, with a response similar to that of the iris muscle, expanding the applications of SMAs in clinical devices and soft robotics.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Engineering, Industrial
Kui-Kam Kwon, Dae-Seob Song, Ying-Jun Quan, Ji Ho Jeon, Sung-Hoon Ahn
Summary: In this study, a novel process for fabricating crackless high aspect ratio glass through-structures is proposed using laser-induced backside wet etching (LIBWE) and a detachably bonded glass cover. The process allows for the fabrication of high aspect ratio crackless structures with inexpensive machining devices, while inhibiting crack generation.
CIRP ANNALS-MANUFACTURING TECHNOLOGY
(2022)
Article
Materials Science, Textiles
Soo-Min Lee, Woo-Kyun Jung, Juyeon Park, Sung-Hoon Ahn
Summary: With the global population aging, there is a growing demand for physical assistive devices for the elderly. This study developed a wearable gripping aid using a novel 4D material and ergonomic design, aiming to improve handgrip ability for elderly women.
FASHION AND TEXTILES
(2022)
Article
Materials Science, Multidisciplinary
Ying-Jun Quan, Soo-Hong Min, Sungjin Hong, Ji Ho Jeon, Won-Jin Kim, Sung-Hoon Ahn
Summary: This article introduces a camera-based sensing method for structural color sensors, which involves simple image processing to convert RGB data into hue data. Through experimental verification, this method has been proven effective and cost-efficient in application, potentially accelerating the adoption of the Internet of Things in various engineering fields.
ADVANCED MATERIALS TECHNOLOGIES
(2022)
Article
Green & Sustainable Science & Technology
Ji-Hyeon Song, Woo-Kyun Jung, Sung-Hoon Ahn
Summary: Among microscale printing processes, dry nanoparticle printing is an environment friendly process that does not require toxic chemicals. A laser process is often integrated as a hybrid system to improve the printing quality and overcome the poor adhesion problem. This study assesses the energy efficiency of the nanoparticle deposition system (NPDS) and the laser-enhanced nanoparticle deposition system (L-NPDS) using real-time power monitoring and theoretical modeling. Introducing laser energy increases the total energy efficiency by 3.78 times and confirms the recyclability of the nanoparticles through X-ray diffraction.
INTERNATIONAL JOURNAL OF PRECISION ENGINEERING AND MANUFACTURING-GREEN TECHNOLOGY
(2023)
Review
Green & Sustainable Science & Technology
Jun Young Choi, Ji Ho Jeon, Jang Hyeon Lyu, Jungwoo Park, Geun Young Kim, Suk Young Chey, Ying-Jun Quan, Binayak Bhandari, B. Gangadhara Prusty, Sung-Hoon Ahn
Summary: The acceleration of environmental pollution and global warming has led to increased environmental awareness and regulations to reduce carbon emissions. The automotive industry is shifting towards electric vehicles and urban air mobility, where composites are gaining attention for their increased driving range and green mobility. However, the tradeoff between performance and cost has hindered the mass adoption of composites. The latest developments focus on the application of biodegradable composites and robotic automation in composite manufacturing for eco-friendly and cost-effective production.
INTERNATIONAL JOURNAL OF PRECISION ENGINEERING AND MANUFACTURING-GREEN TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Ji-Hyeon Song, Young-Gyun Kim, Younggyun Cho, Seongheon Hong, Jun Young Choi, Min-Soo Kim, Sung-Hoon Ahn
Summary: Wearable strain sensors with stretchability and biocompatibility were designed and fabricated using a kirigami-cut PVDF film. The developed sensor can measure strain and strain rate simultaneously, and the piezoelectric performance depends on both strain and strain rate. The relationship between voltage and voltage change rate can be analyzed to detect strain and strain rate. The sensor's performance was evaluated using different kirigami patterns, and it was successfully used for athlete rehabilitation and posture monitoring.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Nanoscience & Nanotechnology
Dae-Seob Song, Ji-Hyeon Song, Sung-Hoon Ahn
Summary: In this study, a facile process was developed to print a 3D microstructure of silver nanoparticles (Ag NPs) for antibacterial applications. The printed Ag NP mesh retained the properties of Ag NPs, and various mesh sizes and porosities were evaluated as antibacterial filters. A prototype water filter with three mesh layers effectively filtered out all active bacteria, demonstrating the viability of the proposed Ag NP 3D printing process for manufacturing antibacterial microstructures.
ACS APPLIED NANO MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Young-Gyun Kim, Ji-Hyeon Song, Seongheon Hong, Sung-Hoon Ahn
Summary: In this study, a high-performance kirigami piezoelectric strain sensor was developed and successfully applied in a haptic glove for playing musical instruments. The sensor exhibits high sensitivity, stretchability, and tunability.
NPJ FLEXIBLE ELECTRONICS
(2022)
Article
Engineering, Manufacturing
Daenyoung Kim, Yoo-Seok Kim, Ki Young Song, Sung Hoon Ahn, Chong Nam Chu
Summary: This study proposes two methods to promote the flow of dielectric fluid in order to overcome the challenges in machining aluminum nitride. The experimental results show different effects on material removal rate and tool wear.
INTERNATIONAL JOURNAL OF PRECISION ENGINEERING AND MANUFACTURING
(2022)
