Materials Literature
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Nanoprobes for MRI and optical imaging are demonstrated. Gd@C-dots possess strong fluorescence and can effectively enhance signals on T1 -weighted MR images. The nanoprobes have low toxicity, and, despite a relatively large size, can be efficiently excreted by renal clearance from the host after systemic injection.
Photoluminescence (PL) of Fe3O4 nanoparticle was observed from the visible to near-infrared (NIR) range by laser irradiation at 407 nm. PL spectra of ∼10 nm diameter Fe3O4 nanoparticles organized in different spatial configuration, showed characteristic emissions with a major peak near 560 nm, and two weak peaks near…
Two dimensional transition metal dichalcogenides (2D TMDs) offer promise as opto-electronic materials due to their direct band gap and reasonably good mobility values. However, most metals form high resistance contacts on semiconducting TMDs such as MoS2. The large contact resistance limits the performance of devices.…
Omniphobic coatings are designed to repel a wide range of liquids without leaving stains on the surface. A practical coating should exhibit stable repellency, show no interference with color or transparency of the underlying substrate and, ideally, be deposited in a simple process on arbitrarily shaped surfaces. We us…
Due to its manufacturing and size tailoring ease, porous anodic alumina (PAA) templates are an elegant physical-chemical nanopatterning approach and an emergent alternative to more sophisticated and expensive methods currently used in nanofabrication. In this review, we will describe the ground work on the fabrication…
Hyperbranched polymers (HBPs), an important subclass of dendritic macromolecules, are highly branched, three-dimensional globular nanopolymeric architectures. Attractive features like highly branched topological structures, adequate spatial cavities, numerous terminal functional groups and convenient synthetic procedu…
Three-dimensional (3D) electrodes have been demonstrated to be promising candidates for high-performance supercapacitors because of their unique architectures and outstanding electrochemical properties. However, the fabrication process for current 3D electrodes is not scalable. Herein, a novel and cost-effective activ…
A new, simple, and effective method to graft gallic acid (GA) onto chitosan (CS) in aqueous solution in the presence of carbodiimide and hydroxybenzotriazole was developed. The grafting amount of GA reached as much as 209.9 mg/g of copolymer, which appears as the highest one among the reported literature, and the graf…
Thermosensitive liposomes are a promising tool for external targeting of drugs to solid tumors when used in combination with local hyperthermia or high intensity focused ultrasound. In vivo results have demonstrated strong evidence that external targeting is superior over passive targeting achieved by highly stable lo…
Bacterial pollution is a great risk for human health. Nanotechnology offers a way to develop new inorganic antibacterial agents. Nano-inorganic metal oxide has a potential to reduce bacterial contamination. MgO is an important inorganic oxide and has been widely used in many fields. Many studies have shown that MgO na…
Graphene quantum dots (GQDs) with their edge-bound nanometer-size present distinctive properties owing to quantum confinement and edge effects. We report a facile ultrasonic approach with chemical activation using KOH to prepare activated GQDs or aGQDs enriched with both free and bound edges. Compared to GQDs, the aGQ…
Photon-upconverting nanoparticles (UCNPs) can be excited by near-infrared light and emit visible light (anti-Stokes emission) which prevents autofluorescence and light scattering of biological samples. The potential for background-free imaging has attracted wide interest in UCNPs in recent years. Small and homogeneous…
In 2000, the National Institute of Health launched the National Nanotechnology Initiative to support, coordinate, and advance research and development of nanoscale projects. The impact of this new program on health-science related research and development became quickly visible. Broad governmental financial support ad…
Lanthanide doped nanoparticles (Ln:NPs) hold promise as novel luminescent probes for numerous applications in nanobiophotonics. Despite excellent photostability, narrowband photoluminescence, efficient anti-Stokes emission and long luminescence lifetimes, which are needed to meet the requirements of multiplexed and ba…
Functional characterization of a protein sequence is one of the most frequent problems in biology. This task is usually facilitated by accurate three-dimensional (3-D) structure of the studied protein. In the absence of an experimentally determined structure, comparative or homology modeling can sometimes provide a us…
Attention has recently focussed on MgB2 superconductors (Tc~39K) which can be formed into wires with high material density and viable critical current densities (Jc)1. However, broader utilisation of this diboride and many others is likely to occur when facile synthesis for bulk applications is developed. To date, com…
The effect of the electrodes material on negative corona discharge has been studied in point/plane configuration in the air at atmospheric pressure. Three materials (copper, aluminum and steel) were tested in experiments. Current/voltage characteristics indicate that currents related with steel electrodes are larger t…
Migration of neurons is essential for proper nervous system development. Defects in neural development can lead to several neurological disorders. Hence it is important to understand the mechanism of neuronal migration along with the signaling pathways required. Caenorhabditis elegans is a useful system to study neuro…
現在の家庭洗濯はすすぎを１回にするなどで洗濯時間を短くし、また節水をするという時短節水の傾向にある。例えばすすぎ回数の減少を可能とした洗剤が販売されるといった消費者の時短傾向に対応した商品の開発が試みられるなど洗濯環境が変化している。そこで、市販されている洗濯用洗剤を使用した場合、洗濯時間が洗浄性にどのような影響を及ぼすかを検討した。その結果、洗浄率は洗浄初期から急激に上昇し、洗浄時間20分以上は緩やかな上昇となり、再汚染は洗浄時間が長くなるほど増大すること、また、長時間洗浄することで被洗物の損傷が進むことが確認できた。洗剤では粉末洗剤の洗浄率は洗浄開始直後から高い値を示すが、中性洗剤では洗浄率が高くなるには洗浄時間15分程度が必…
Modification of surfaces to improve the thrombo-resistance of a synthetic biomaterial is a vital aspect in the design of haemocompatible surfaces. Recent work suggests a non-haemocompatible surface may ubiquitously adsorb specific plasma proteins that form a proteinacious layer which mediates the adhesion and activati…