The Mesopores of Raphid Pennate Diatoms: Toward Natural Controllable Anisotropic Mesoporous Silica Microparticles

Tuning SERS Signal via Substrate Structuring: Valves of Different Diatom Species with Ultrathin Gold Coating

“…The pore size and pore spacing in diatoms are usually addressed to be the key parameters in considering the valves' photonic crystal features. In many diatom valves, the pore diameter spans four orders of magnitude, from 3 -2000 nm [12,14,17,33], and the pore spacing is in the same range, in many cases overlapping with the wavelength of visible light. The pore size and spacing of our three structurally distinct valves are comparable with λexc.…”

“…MDPI and/or the editor(s) disclaim responsibility for any injury to people or property resulting from any ideas, methods, instructions, or products referred to in the content. cultivated under a wide range of conditions if nutrients and light are provided, and their biosilica can be retrieved [16], modified [15,17], and utilized as building blocks in photonic applications [14,18]. Each of the thousands of species discovered so far has a unique morphology, valve geometry, and pore pattern [12].…”

Novel Drug and Gene Delivery System and Imaging Agent Based on Marine Diatom Biosilica Nanoparticles

“…Hence, the importance of biosilica in medical fields such as in orthopedics [ 51 ]. In fact, the compositional control of shape, size, pore pattern, surface area, and pore size of the synthetic MSNs, can be achieved in diatoms by altering the physicochemical parameters, post-harvest modifications, or genetic engineering [ 50 ]. Diatoms are considered to be the main biofactories for global silica biogenesis.…”

“…Nature has provided promising alternative porous materials from the biosynthesis of the MSNs. During biomineralization, marine organisms make remarkable, well-designed inorganic frameworks and patterns down to the nanometer scale [ 50 ]. Silica has important biological functions in higher plants, animals, and humans.…”

“…Diatoms are considered to be the main biofactories for global silica biogenesis. The application of frustules has led to the creation of a new, rapidly developing field called “Diatom nanotechnology” [ 50 ]. The solid surfaces of frustules consist of particles with a size of approximately 40 nm or 100–200 nm and display a patterned network of highly ordered pores mostly of uniform shape (nano to micrometer in size) with a homogeneous distribution within the surface.…”