Sol-gel processing, designing porosity, pore size and polarity, and shaping processes

Ishizaki, Kōzō; Komarneni, Sridhar; Nanko, Makoto

doi:10.1007/978-1-4615-5811-8_4

Cited by 4 publications

(1 citation statement)

References 137 publications

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“…The use of polysilsesquioxanes for the detection of VOC has also been tested, through LSPR in coated substrates [ 38 ]. Moreover, the use of hybrid sol-gel materials allows for fine-tuning of the porosity of the final films [ 39 ].…”

Section: Introductionmentioning

confidence: 99%

Hybrid Sol-Gel Surface-Enhanced Raman Sensor for Xylene Detection in Solution

Weber

Brigo

Brusatin

et al. 2021

Sensors

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This paper reports on the fabrication and characterization of a plasmonic/sol-gel sensor for the detection of aromatic molecules. The sol-gel film was engineered using polysilsesquioxanes groups to capture the analyte, through π-π interaction, and to concentrate it close to the plasmonic surface, where Raman amplification occurs. Xylene was chosen as an analyte to test the sensor. It belongs to the general class of volatile organic compounds and can be found in water or in the atmosphere as pollutants released from a variety of processes; its detection with SERS is typically challenging, due to its low affinity toward metallic surfaces. The identification of xylene was verified in comparison with that of other aromatic molecules, such as benzene and toluene. Investigations were carried out on solutions of xylene in cyclohexane, using concentrations in the range from 0 to 800 mM, to evaluate the limit of detection (LOD) of about 40 mM.

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Section: Introductionmentioning

confidence: 99%

Hybrid Sol-Gel Surface-Enhanced Raman Sensor for Xylene Detection in Solution

Weber

Brigo

Brusatin

et al. 2021

Sensors

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Biomaterials: Bioceramics

Jones

Hench

2006

Encyclopedia of Medical Devices and Instrumentation

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Bioceramics are ceramics that can be used for the reconstruction or regeneration of diseased or damaged tissues, they can be bioinert (e.g., alumina and zirconia), resorbable in the body (e.g., tricalcium phosphate), or bioactive (e.g., bioactive glass, hydroxyapatite), which bond to certain tissues and are used in regenerative medicine. In orthopedics, diseased joints are traditionally replaced by prostheses made of bioinert materials that may last up to 15 years. Advanced metal alloys, special polymers, and bioinert ceramics are the basis of this success. However, as life expectancy of our population increases, patients require >30 years from their devices. For large bone defects and severely diseased or damaged soft tissue such as the lung and the liver, transplantation is used, but donors are never enough. To satisfy this growing need for very long term tissue repair a shift of emphasis on replacement of tissues to regeneration of tissues is needed. An understanding and use of biological approaches is essential. This article describes current applications of bioceramics as medical devices and discusses development of porous bioceramic and composite scaffolds for tissue engineering. It suggests that bioactive ceramics will be used for future biomedical devices for regenerative medicine due to their potential for guiding tissue regeneration by stimulating cells at the genetic level.

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Fabrication and characterization of shape memory polyurethane porous scaffold for bone tissue engineering

Xia

Teramoto

et al. 2017

J Biomedical Materials Res

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Tissue engineering is a promising alternative for treating bone defects. However, improvements in scaffold design are needed to precisely match the irregular boundaries of bone defects as well as facilitate clinical application. In this study, a shape memory polyurethane scaffold was fabricated using a salt-leaching-phase inverse technique. Different sizes of salts were used to obtain scaffolds with different pore sizes. Scanning electron microscope, X-ray photoelectron spectroscopy, and X-ray micro-computed tomography analysis confirmed that three-dimensional porous polyurethane scaffolds were obtained. The mechanical properties and biocompatibility of the scaffolds were analyzed by compression testing, thermal mechanical analysis, and cell experiments with osteosarcoma MG-63 cells. The results revealed that the scaffolds had good mechanical properties and shape memory properties for bone repair, and also had the ability to promote cell proliferation. Thus, this scaffold design has good prospects for application to bone tissue engineering. © 2017 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 105A: 1132-1137, 2017.

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Sol-gel processing, designing porosity, pore size and polarity, and shaping processes

Cited by 4 publications

References 137 publications

Hybrid Sol-Gel Surface-Enhanced Raman Sensor for Xylene Detection in Solution

Hybrid Sol-Gel Surface-Enhanced Raman Sensor for Xylene Detection in Solution

Biomaterials: Bioceramics

Fabrication and characterization of shape memory polyurethane porous scaffold for bone tissue engineering

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