Surface morphological properties of sol-gel derived SiO<sub>2</sub>fiber

Hwang, Kyu–Seog; Kwon, Jeong-Tae; Oh, Jeong-Sun; An, Jun-Hyung; Kim, Byung–Hoon

doi:10.1023/b:jmsc.0000016170.37373.52

Cited by 4 publications

(2 citation statements)

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“…Gelation occurs when the colloids are so linked that the viscosity increases abruptly. At this point, there are still no bonded particles remaining and the gel shows a high viscosity and low elasticity, which is known as the gel point: at this moment, the optical fiber is typically dipped into the solution [66,67].…”

Section: Chemical Reaction and Morphologymentioning

confidence: 99%

Fiber Optic Sensors Based on Nanostructured Materials

Elosúa

Hernáez

Matı́as

et al. 2014

Springer Series in Surface Sciences

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Fiber optic sensors have been developed taking advantage on the synergy between the properties of nanostructured materials and the ones that characterize an optical fiber. The mechanical properties of optical fiber introduce some restrictions to the techniques used for the deposition of materials. As an alternative to the classical deposition procedures, wet coating techniques have been successfully applied in these cases. The current chapter put emphasis on materials that can be incorporated using wet coating techniques. The first one presented is the multilayer based nanostructures: among the different alternatives, we have focused on materials prepared with the Layer-by-Layer technique. Another type of products used for the fabrication of optical fiber sensors is sol-gel matrices, which are made of silica, so that its optical properties are similar to the ones of an optical fiber. The other two described type of products have focused the attention of many researchers in the recent years. Firstly, materials with an enhanced selectivity are presented: the molecularly imprinted polymers (MIPs). Finally, sensors based on metallic nanolayers and particles are presented. All these materials and techniques have acquired a great importance in the field of optical fiber sensors due to their versatility and the good features that offer.

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Section: Chemical Reaction and Morphologymentioning

confidence: 99%

Fiber Optic Sensors Based on Nanostructured Materials

Elosúa

Hernáez

Matı́as

et al. 2014

Springer Series in Surface Sciences

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“…Moreover, numerous in-vitro experiments suggest that silica promotes bone growth [53,55,56]. The surface properties of SiO 2 -fibers, which are stabilized against dissolution by thermal treatment, can induce the mineralization of calcium phosphates from simulated body fluids (SBFs) [57,58].…”

Section: Fibersmentioning

confidence: 99%

From Sol-Gel Processing to Bio-Inspired Materials Synthesis

Löbmann

2007

CNANO

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The improvement of materials performance and their respective processing routes ever has been the driving force for material science and engineering. For the preparation of non-metallic inorganic materials the synthesis from chemical precursors is a field of steadily increasing scientific and industrial importance: Products in a broad variety of compositions can be obtained by sol-gel techniques. The shaping of intermediates allows the specific preparation of many microarchitectural configurations such as powders, fibers, thin films and aerogels. For purely inorganic products the sintering temperatures are low compared to conventional mixed-oxide ceramic processing which enables e.g. the coating of glasses and metals. Hybrid inorganic-organic compositions combine some advantages of polymers and ceramics.Nature has found amazing alternative ways to produce high-performance inorganic-organic composites at ambient temperatures under physiological conditions: Teeth, bone and nacre are self-evident examples for the capability of biomineralization processes.Even though many aspects of the related mechanisms in vivo are not yet fully understood, the utilization of the basic strategies of natural biomineralization has become a challenge to material scientist in an interdisciplinary approach.In this paper the strong points of sol-gel processing are highlighted, its limitations are discussed and related to the unique characteristics of natural biomineralization. Subsequently biomimetic and biologically-inspired material syntheses routes are reviewed which try to compensate the shortcomings of sol-gel techniques.

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