Nanoparticles and Composites

Kickelbick, Guido

doi:10.1002/9783527670819.ch07

Cited by 9 publications

(6 citation statements)

References 89 publications

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“…These particles present a surface charge due to the ions in the synthesis system. With proper control of pH, temperature, and concentration of components, very monodisperse SiO 2 spheres can be obtained from a few nanometers to a few micrometers [20]. The kinetics and mechanism of the drug have been investigated since its discovery.…”

Section: Oxide Spheresmentioning

confidence: 99%

From Self-Assembly of Colloidal Crystals toward Ordered Porous Layer Interferometry

Wan

Qian

2023

Biosensors

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Interferometry-based, reflectometric, label-free biosensors have made significant progress in the analysis of molecular interactions after years of development. The design of interference substrates is a key research topic for these biosensors, and many studies have focused on porous films prepared by top-down methods such as porous silicon and anodic aluminum oxide. Lately, more research has been conducted on ordered porous layer interferometry (OPLI), which uses ordered porous colloidal crystal films as interference substrates. These films are made using self-assembly techniques, which is the bottom-up approach. They also offer several advantages for biosensing applications, such as budget cost, adjustable porosity, and high structural consistency. This review will briefly explain the fundamental components of self-assembled materials and thoroughly discuss various self-assembly techniques in depth. We will also summarize the latest studies that used the OPLI technique for label-free biosensing applications and divide them into several aspects for further discussion. Then, we will comprehensively evaluate the strengths and weaknesses of self-assembly techniques and discuss possible future research directions. Finally, we will outlook the upcoming challenges and opportunities for label-free biosensing using the OPLI technique.

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Section: Oxide Spheresmentioning

confidence: 99%

From Self-Assembly of Colloidal Crystals toward Ordered Porous Layer Interferometry

Wan

Qian

2023

Biosensors

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“…Sol merupakan partikel padat yang terlarut dalam zat cair yang termasuk dalam sistem koloid [10]. Penambahan TEOS dan air kedalam mikroemulsi w/o dengan perbandingan mol 1:8, jika penambahan TEOS semakin banyak maka konsentrasi TEOS semakin besar jadi ukuran partikel semakin kecil sehingga dapat mempercepat proses pembentukan gel, adapun faktor yang dapat mempengaruhi pembentukan gel ialah konsentrasi dan suhu [11].…”

Section: Pembuatan Bubuk Kulit Buah Nagaunclassified

Kelarutan Zat Warna Organik Dalam Gelasi Mikroemulsi Water In Oil Sistem Air, Surfaktan Kationik (Hexadecyl Trimethyl Ammonium Bromide) dan Pentanol

Jurdilla

Putra²

2022

Periodic

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Research on the solubility of organic dyes in gelation of water in oil (w/o) microemulsion of the system of water, cationic surfactant hexadecyl trimethyl ammonium bromide (HTAB) and pentanol the purpose was to prepare gels from microemulsions (w/o) using the sol-gel method and determine the solubility of organic dyes in microemulsion gelation (w/o), determine density values and refractive index in microemulsion gelation (w/o). Gel preparation was carried out using the sol-gel method by adding TEOS and ethanol in a ratio of 1:8 mol which is hydrolyzed with water to form a gel, the percentage of solubility of organic dyes in turmeric powder at pH 4.5 and 9.5, namely 3.92% and 3.95%, then for dragon fruit peel powder namely 1.96% and 1.93% at pH 4,5 and 9.5, Respectively. Density testing can be done to see the concentration of the greatest value namely turmeric 0.9243 gram/cm 3 and 0.9244 gram/cm 3 for pH 4.5 and 9.5, Furthermore. the measurement of the refractive index to see the homogeneity of the largest solution, namely turmeric at pH 4.5 and 9.5 namely 1.4204 and 1,4219.

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“…In 1968, Werner Stöber et al developed a chemical process (later named as the Stöber process) for synthesizing monodisperse colloidal silica spheres that have controllable and uniform sizes [75]. The Stöber process has opened up a broad avenue for fabricating silica-based materials through self-assembly of synthesized silica or silicabased hybrid colloids [76,77]. Beyond the Stöber process, other inorganic synthesis routes can also be used to make highly uniform nanoparticle dispersions of other materials.…”

Section: Bottom-up Syntheses Of Dispersionsmentioning

confidence: 99%

Assembly of colloidal particles in solution

Zhao

Mason

2018

Rep. Prog. Phys.

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Advances in both top-down and bottom-up syntheses of a wide variety of complex colloidal building blocks and also in methods of controlling their assembly in solution have led to new and interesting forms of highly controlled soft matter. In particular, top-down lithographic methods of producing monodisperse colloids now provide precise human-designed control over their sub-particle features, opening up a wide range of new possibilities for assembly structures that had been previously limited by the range of shapes available through bottom-up methods. Moreover, an increasing level of control over anisotropic interactions between these colloidal building blocks, which can be tailored through local geometries of sub-particle features as well as site-specific surface modifications, is giving rise to new demonstrations of massively parallel off-chip self-assembly of specific target structures with low defect rates. In particular, new experimental realizations of hierarchical self-assembly and control over the chiral purity of resulting assembly structures have been achieved. Increasingly, shapedependent, shape-complementary, and roughness-controlled depletion attractions between non-spherical colloids are being used in novel ways to create assemblies that go far beyond early examples, such as fractal clusters formed by diffusion-limited and reaction-limited aggregation of spheres. As self-assembly methods have progressed, a wide variety of advanced directed assembly methods have also been developed; approaches based on microfluidic control and applying structured electromagnetic fields are particularly promising.

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Nanoparticles and Composites

Cited by 9 publications

References 89 publications

From Self-Assembly of Colloidal Crystals toward Ordered Porous Layer Interferometry

From Self-Assembly of Colloidal Crystals toward Ordered Porous Layer Interferometry

Kelarutan Zat Warna Organik Dalam Gelasi Mikroemulsi Water In Oil Sistem Air, Surfaktan Kationik (Hexadecyl Trimethyl Ammonium Bromide) dan Pentanol

Assembly of colloidal particles in solution

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