scholarly journals Three-Dimensional Visualization and Quantification of Structural Fibres for Biomedical Applications

10.5772/55891 ◽  
2013 ◽  
Author(s):  
Magnus B. ◽  
Gary Chinga-Carrasco ◽  
Catharina de Lange Davies
Keyword(s):  
Biomedical Applications ◽  
Three Dimensional

Applications of Scanning Microscopy in Biomedical Research

1968 ◽  
Vol 26 ◽  
pp. 354-355
Author(s):  
T. L. Hayes
Keyword(s):  
Information Content ◽  
Biomedical Research ◽  
Biomedical Applications ◽  
Three Dimensional ◽  
Dental Enamel ◽  
Resolving Power ◽  
Whole Mount ◽  
Two Parameters ◽  
Content Information ◽  
Sectioned Tissue

Biomedical applications of the scanning electron microscope (SEM) have increased in number quite rapidly over the last several years. Studies have been made of cells, whole mount tissue, sectioned tissue, particles, human chromosomes, microorganisms, dental enamel and skeletal material. Many of the advantages of using this instrument for such investigations come from its ability to produce images that are high in information content. Information about the chemical make-up of the specimen, its electrical properties and its three dimensional architecture all may be represented in such images. Since the biological system is distinctive in its chemistry and often spatially scaled to the resolving power of the SEM, these images are particularly useful in biomedical research.In any form of microscopy there are two parameters that together determine the usefulness of the image. One parameter is the size of the volume being studied or resolving power of the instrument and the other is the amount of information about this volume that is displayed in the image. Both parameters are important in describing the performance of a microscope. The light microscope image, for example, is rich in information content (chemical, spatial, living specimen, etc.) but is very limited in resolving power.

scholarly journals Comparative Study of Silk Fibroin-Based Hydrogels and Their Potential as Material for 3-Dimensional (3D) Printing

Molecules ◽  
2021 ◽  
Vol 26 (13) ◽  
pp. 3887
Author(s):  
Watcharapong Pudkon ◽  
Chavee Laomeephol ◽  
Siriporn Damrongsakkul ◽  
Sorada Kanokpanont ◽  
Juthamas Ratanavaraporn
Keyword(s):  
3D Printing ◽  
Silk Fibroin ◽  
Biomedical Applications ◽  
Mechanical Stability ◽  
Three Dimensional ◽  
Structure Stability ◽  
3 Dimensional ◽  
Critical Technology ◽  
Box Structure ◽  
High Degree

Three-dimensional (3D) printing is regarded as a critical technology in material engineering for biomedical applications. From a previous report, silk fibroin (SF) has been used as a biomaterial for tissue engineering due to its biocompatibility, biodegradability, non-toxicity and robust mechanical properties which provide a potential as material for 3D-printing. In this study, SF-based hydrogels with different formulations and SF concentrations (1–3%wt) were prepared by natural gelation (SF/self-gelled), sodium tetradecyl sulfate-induced (SF/STS) and dimyristoyl glycerophosphorylglycerol-induced (SF/DMPG). From the results, 2%wt SF-based (2SF) hydrogels showed suitable properties for extrusion, such as storage modulus, shear-thinning behavior and degree of structure recovery. The 4-layer box structure of all 2SF-based hydrogel formulations could be printed without structural collapse. In addition, the mechanical stability of printed structures after three-step post-treatment was investigated. The printed structure of 2SF/STS and 2SF/DMPG hydrogels exhibited high stability with high degree of structure recovery as 70.4% and 53.7%, respectively, compared to 2SF/self-gelled construct as 38.9%. The 2SF/STS and 2SF/DMPG hydrogels showed a great potential to use as material for 3D-printing due to its rheological properties, printability and structure stability.

Three-Dimensional Printing Using a Maize Protein: Zein-Based Inks in Biomedical Applications

2021 ◽  
Author(s):  
Jorge Alfonso Tavares-Negrete ◽  
Alberto Emanuel Aceves-Colin ◽  
Delia Cristal Rivera-Flores ◽  
Gladys Guadalupe Díaz-Armas ◽  
Anne-Sophie Mertgen ◽  
...  
Keyword(s):  
Biomedical Applications ◽  
Three Dimensional ◽  
Three Dimensional Printing ◽  
Maize Protein ◽  
Dimensional Printing

scholarly journals Two-photon polymerization nanolithography technology for fabrication of stimulus-responsive micro/nano-structures for biomedical applications

2020 ◽  
Vol 9 (1) ◽  
pp. 1118-1136
Author(s):  
Zhenjia Huang ◽  
Gary Chi-Pong Tsui ◽  
Yu Deng ◽  
Chak-Yin Tang
Keyword(s):  
Biomedical Applications ◽  
Three Dimensional ◽  
Water Soluble ◽  
Fabrication Technology ◽  
Nano Fabrication ◽  
Two Photon ◽  
Nano Structures ◽  
Wide Range ◽  
Stimulus Responsive ◽  
Two Photon Polymerization

AbstractMicro/nano-fabrication technology via two-photon polymerization (TPP) nanolithography is a powerful and useful manufacturing tool that is capable of generating two dimensional (2D) to three dimensional (3D) arbitrary micro/nano-structures of various materials with a high spatial resolution. This technology has received tremendous interest in cell and tissue engineering and medical microdevices because of its remarkable fabrication capability for sophisticated structures from macro- to nano-scale, which are difficult to be achieved by traditional methods with limited microarchitecture controllability. To fabricate precisely designed 3D micro/nano-structures for biomedical applications via TPP nanolithography, the use of photoinitiators (PIs) and photoresists needs to be considered comprehensively and systematically. In this review, widely used commercially available PIs are first discussed, followed by elucidating synthesis strategies of water-soluble initiators for biomedical applications. In addition to the conventional photoresists, the distinctive properties of customized stimulus-responsive photoresists are discussed. Finally, current limitations and challenges in the material and fabrication aspects and an outlook for future prospects of TPP for biomedical applications based on different biocompatible photosensitive composites are discussed comprehensively. In all, this review provides a basic understanding of TPP technology and important roles of PIs and photoresists for fabricating high-precision stimulus-responsive micro/nano-structures for a wide range of biomedical applications.

Three-Dimensional Printing of High-Content Graphene Scaffolds for Electronic and Biomedical Applications

ACS Nano ◽  
2015 ◽  
Vol 9 (4) ◽  
pp. 4636-4648 ◽  
Author(s):  
Adam E. Jakus ◽  
Ethan B. Secor ◽  
Alexandra L. Rutz ◽  
Sumanas W. Jordan ◽  
Mark C. Hersam ◽  
...  
Keyword(s):  
Biomedical Applications ◽  
Three Dimensional ◽  
Three Dimensional Printing ◽  
Dimensional Printing

Rapid fabrication of versatile omni-directional and long-distance three-dimensional flow paper-fluidic analytical devices using a cut-and-insert method for biomedical applications

2018 ◽  
Vol 10 (38) ◽  
pp. 4648-4654 ◽  
Author(s):  
Tae Joon Kwak ◽  
Wookkun Kwon ◽  
Jiang Yang ◽  
Sang Woo Lee ◽  
Woo-Jin Chang
Keyword(s):  
Liquid Flow ◽  
Biomedical Applications ◽  
Low Cost ◽  
Three Dimensional ◽  
Long Distance ◽  
Three Dimensional Flow ◽  
Dimensional Flow ◽  
Rapid Fabrication ◽  
Paper Fluidics ◽  
Cost Regime

Paper fluidics has recently offered an approach to precisely guide liquid flow in analytical devices with a low-cost regime.

Engineering of microscale three-dimensional pancreatic islet models in vitro and their biomedical applications

2015 ◽  
Vol 36 (4) ◽  
pp. 619-629 ◽  
Author(s):  
Bin Gao ◽  
Lin Wang ◽  
Shuang Han ◽  
Belinda Pingguan-Murphy ◽  
Xiaohui Zhang ◽  
...  
Keyword(s):  
Pancreatic Islet ◽  
Biomedical Applications ◽  
Three Dimensional
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