Optical properties of in-vitro biomineralised silica
Optical properties of in-vitro biomineralised silica
复制标题
体外生物矿化二氧化硅的光学特性
作者：
A. Polini;S. Pagliara;A. Camposeo;R. Cingolani;Xiaohong Wang;H. Schröder;W. Müller;D. Pisignano
硅是地壳中第二常见的元素，其氧化物（SiO2）是最丰富的矿物。二氧化硅和硅酸盐广泛用于医学和工业以及微纳米光学和电子学。然而，玻璃纤维和部件的制造需要高温和非生理条件，与动物和植物中的生物二氧化硅结构相反。在这里，我们首次展示了使用重组silicatein-α，海绵蛋白催化生物硅化反应的最丰富的亚基，通过软微光刻在体外直接形成光波导。人造生物硅纤维模仿天然海绵针状体，表现出适合于将光限制在波导内的折射率值，光学损耗在5-10 cm−1的范围内，适合于在芯片实验室系统中的应用。 这种方法将生物硅化扩展到通过生理加工条件来控制光学元件的制造，这是传统技术难以解决的问题。
Silicon is the second most common element on the Earth's crust and its oxide (SiO2) the most abundant mineral. Silica and silicates are widely used in medicine and industry as well as in micro- and nano-optics and electronics. However, the fabrication of glass fibres and components requires high temperature and non-physiological conditions, in contrast to biosilica structures in animals and plants. Here, we show for the first time the use of recombinant silicatein-α, the most abundant subunit of sponge proteins catalyzing biosilicification reactions, to direct the formation of optical waveguides in-vitro through soft microlithography. The artificial biosilica fibres mimic the natural sponge spicules, exhibiting refractive index values suitable for confinement of light within waveguides, with optical losses in the range of 5–10 cm−1, suitable for application in lab-on-chips systems. This method extends biosilicification to the controlled fabrication of optical components by physiological processing conditions, hardly addressed by conventional technologies.
Suberites domunula 中轴丝的分形相关组装：与生物矿化和生物二氧化硅形成的相关性
影响因子：
14
作者：
Müller WEG;Boreiko A;Schloßmacher U;Wang X;Tahir MN;Tremel W;Brandt D;Kaandorp JA;Schröder HC
通讯作者：
Schröder HC
影响因子：
3.6
作者：
Müller, WEG;Rothenberger, M;Schröder, H
通讯作者：
Schröder, H
影响因子：
21.8
作者：
Ehrlich, Hermann;Deutzmann, Rainer;Collins, Matthew J.
通讯作者：
Collins, Matthew J.