نتایج جستجو برای: inorganic nanoparticles
تعداد نتایج: 179608 فیلتر نتایج به سال:
One of the key challenges in materials science is to control the size and shape of inorganic nanoparticles with a high degree of precision, as these parameters have a significant influence on the nanoparticles' properties and potential applications. Here, we describe the preparation of highly monodisperse silica nanoparticles smaller than 5 nm in diameter by using self-assembled, hollow, spheri...
The quality of life of patients with head and neck squamous cell carcinoma (HNSCC) has been improved because of advances in surgical and radiotherapeutic techniques as well as organ-preservation methods. Despite such progresses, survival rates are dismal because of frequent recurrences, distant metastases and the development of secondary primary tumors. Nanoparticles have distinct characteristi...
Nanoparticles of transition metal dichalcogenides (TMDC) have been known to reduce friction and wear when added to oil-type liquid lubricants. Aggregation limits the ability of the nanoparticles to penetrate into the interface between the two rubbing surfaces—an important factor in friction reduction mechanisms. Doping has been successfully used to reduce agglomeration, but it must be done in t...
Ligand molecules tethered on the surface of inorganic nanoparticles play an important role in the synthesis and application of nanoparticles due to their dramatic influence over surface properties. Tailoring of nanoparticle surfaces with ligands is therefore a key factor for stabilizing nanoparticles in various solvents as well as for controlling hierarchical assembly of nanoparticles to give f...
BACKGROUND Inorganic nanoparticles provide promising tools for biomedical applications including detection, diagnosis and therapy. While surface properties such as charge are expected to play an important role in their in vivo behavior, very little is known how the surface chemistry of nanoparticles influences their pharmacokinetics, tumor uptake, and biodistribution. METHOD/PRINCIPAL FINDING...
Though much research has been conducted for nanoparticles, naturally occurring nanoparticles have not yet been well explored for their diverse properties and potential applications. This paper reports the optical absorption and scattering properties of nanoparticles secreted by English ivy. Both experimental and theoretical studies have been conducted. Strong ultraviolet extinction and excellen...
The preparation of size-controlled CdS nanoparticles in block copolymer micelles and formation of composite particles of CdS nanoparticles and polymers are described in this paper. Uniformly sized CdS nanoparticles with different emission wavelengths were successfully synthesized. In addition, composite Janus particles, unidirectionally stacked lamellae particles and onion particles were formed...
Nanoparticles represent an alternative to viral vectors for genetic material transfer to the nervous system. However, to increase transfection efficiency in the central nervous system and to decrease toxicity, the design of nanoparticles needs to be improved to enhance blood-brain barrier crossing and endosomal escape. This paper reviews the strategies used to solve these difficulties and cover...
Nanotechnology refers to research and technology development at the atomic, molecular, and macromolecular scale, leading to the controlled manipulation and study of structures and devices with length scales in the 1-100 nanometers range. Objects at this scale, such as “nanoparticles,” take on novel properties and functions that differ markedly from those seen in the bulk scale. The small size, ...
Virus-based nanoparticles (VNPs) can serve as containers for inorganic nanomaterials with excellent physical and chemical properties. Incorporation of nanomaterials inside the inner cavity of VNPs has opened up lots of possibilities for imaging applications in the field of biology and medicine. Encapsulation of inorganic nanoparticles (NPs) in VNPs can achieve the labeling of VNPs with nanoprob...
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