Search Within
Applied Filters:
关键词:'636347'
显示 1-30 共 127 条结果 关于 "

636347

" within 论文
Phillip Ahn et al.
Ultrasonics, 54(3), 795-800 (2014-02-14)
A resonance based laser ultrasonics technique is explored for the characterization of low density nanoporous gold foams. Laser generated zero group velocity (ZGV) lamb waves are measured in the foams using a Michelson interferometer. The amplitude spectra obtained from the
Evelyn Auyeung et al.
Nature, 505(7481), 73-77 (2013-11-29)
Crystallization is a fundamental and ubiquitous process much studied over the centuries. But although the crystallization of atoms is fairly well understood, it remains challenging to predict reliably the outcome of molecular crystallization processes that are complicated by various molecular
Huang Gao et al.
Science (New York, N.Y.), 346(6215), 1352-1356 (2014-12-17)
We report a low-cost, high-throughput benchtop method that enables thin layers of metal to be shaped with nanoscale precision by generating ultrahigh-strain-rate deformations. Laser shock imprinting can create three-dimensional crystalline metallic structures as small as 10 nanometers with ultrasmooth surfaces
Guojun Weng et al.
Journal of nanoscience and nanotechnology, 14(6), 4072-4077 (2014-04-18)
Gold nanorods of different aspect ratios had been synthesized using seed mediated growth method. The formed gold nanorods had been characterized by the absorption and transmission electron microscopy (TEM) measurements. The obtained gold nanorods were used to study the quenched
Jun Hyuk Heo et al.
Journal of nanoscience and nanotechnology, 13(11), 7254-7258 (2013-11-20)
We investigated the stability of gold nanoparticles (AuNPs) in seawater. The large amount of Na+, Mg2+, K+, and Ca2+ in seawater makes AuNPs unstable resulting in immediate aggregation. We found that AuNPs become much more stable when they were treated
Bum-Young Noh et al.
Journal of nanoscience and nanotechnology, 13(5), 3335-3340 (2013-07-19)
Surface plasmon (SP)-enhanced light emission mechanism has been investigated for the Ag-coated ZnO/Al2O3 core/shell nanorods (NRs). Structural characterizations showed that the ZnO NRs were covered by conformal Al2O3 layer and coated by Ag nanoparticles (NPs). The optical studies by photoluminescence
Cathleen M Crudden et al.
Nature chemistry, 6(5), 409-414 (2014-04-24)
Since the first report of thiol-based self-assembled monolayers (SAMs) 30 years ago, these structures have been examined in a huge variety of applications. The oxidative and thermal instabilities of these systems are widely known, however, and are an impediment to
Seyed Mohammad Amini et al.
IET nanobiotechnology, 7(4), 151-156 (2013-11-12)
In the recent years, enhanced functionality of treatment systems based on nanostructures has attracted a lot of interest. Photodynamic therapy (PDT) is one such treatment method. Here, the authors report the results of the investigations on synthesis and characterisation of
Astrid van der Horst et al.
International journal of radiation oncology, biology, physics, 89(3), 641-648 (2014-05-08)
Because of low soft-tissue contrast of cone beam computed tomography (CBCT), fiducial markers are often used for radiation therapy patient setup verification. For pancreatic cancer patients, biliary stents have been suggested as surrogate fiducials. Using intratumoral fiducials as standard for
Yuyun Zhao et al.
Nanoscale, 5(18), 8340-8350 (2013-07-31)
Widespread antibiotic resistance calls for new strategies. Nanotechnology provides a chance to overcome antibiotic resistance by multiple antibiotic mechanisms. This paper reviews the progress in activating gold nanoparticles with nonantibiotic or antibiotic molecules to combat bacterial resistance, analyzes the gap
Hong C Shen et al.
Drug discovery today. Technologies, 10(1), e3-14 (2013-09-21)
Gold-catalyzed transformations allow efficient access to a wide scope of heterocyclic structures that serve as building blocks and pharmacophores in medicinal chemistry. Compared with other transition metal and Lewis acid catalysis, gold catalysis presents mechanistic divergence, excellent functional group tolerance
Yun Zhang et al.
Natural product reports, 31(4), 489-503 (2014-01-31)
Novel organic reactions drive the advance of chemical synthesis in the same way that enabling technologies drive new scientific discoveries. One area of organic methodology that has undergone significant growth during the last decade is that of homogeneous gold-catalyzed transformations.
Bibek Jyoti Borah et al.
Journal of nanoscience and nanotechnology, 13(7), 5080-5087 (2013-08-02)
Multifunctional phosphine based ligands, 1,1,1-tris(diphenylphosphinomethyl)ethane [CH3C(CH2 PPh2)3][P3] and 1,1,1-tris(diphenylphosphinomethyl)ethane trisulphide [CH3C(CH2P(S)Ph2)3][P3S3] have been introduced to stabilize Au(o)-nanoparticles having small core diameter and narrow size distribution. The Au(o)-nanoparticles were synthesized by the reduction of HAuCl4 precursor with NaBH4 in the presence
Lin Luo et al.
Journal of nanoscience and nanotechnology, 14(6), 4036-4042 (2014-04-18)
A novel immunosensor of human immune globulin (IgG) was fabricated based on the fluorescence transfer between luminescent semiconductor quantum dots (QDs) and gold nanoparticles (AuNPs). AuNPs and CdSe/ZnS QDs were respectively labeled with immune reaction pair:IgG and goat anti-human immunoglobulin
Ping Huang et al.
Journal of nanoscience and nanotechnology, 13(7), 5088-5092 (2013-08-02)
Atomically precise Au(n) nanoclusters (n = number of gold atom in cluster) ideally composed of an exact number of gold atoms have unique core-shell structure and non-metallic electronic properties. The extremely small size of Au25 and Au38 nanoclusters induces a
Maria Jose Santos-Martinez et al.
Journal of biomedical nanotechnology, 10(6), 1004-1015 (2014-04-23)
The increasing use of gold nanoparticles in medical diagnosis and treatment has raised the concern over their blood compatibility. The interactions of nanoparticles with blood components may lead to platelet aggregation and endothelial dysfunction. Therefore, medical applications of gold nanoparticles
Roya Najafi et al.
International journal of food microbiology, 189, 89-97 (2014-08-19)
A combined capture and detection method comprising of nano-immunomagnetic separation (NIMS) and surface enhanced Raman spectroscopy (SERS) was developed to detect Escherichia coli O157 from liquid media including apple juice. The capture antibodies (cAbs) were immobilized on magnetite-gold (Fe3O4/Au) magnetic
James L Mallows
The Medical journal of Australia, 199(11), 813-814 (2013-12-18)
To examine the effect of an education campaign based around a gold coin fine on ordering of C-reactive protein (CRP) tests. A retrospective analysis of CRP test ordering before and after the intervention in the emergency department (ED) of a
Samudra Sengupta et al.
Nature chemistry, 6(5), 415-422 (2014-04-24)
Non-mechanical nano- and microscale pumps that function without the aid of an external power source and provide precise control over the flow rate in response to specific signals are needed for the development of new autonomous nano- and microscale systems.
Hwa Jung Noh et al.
Journal of nanoscience and nanotechnology, 13(12), 8229-8238 (2013-11-26)
Gold nanoparticles were green-synthesized using a glycosaminoglycan, chondroitin sulfate, as the reducing agent by mixing Au3+ and chondroitin sulfate under heating. Chondroitin sulfate-reduced gold nanoparticles were characterized by UV-Vis spectrophotometry, high resolution transmission electron microscopy and atomic force microscopy. The
Jiajing Zhang et al.
Journal of nanoscience and nanotechnology, 14(6), 4124-4138 (2014-04-18)
Gold nanostructures with promising applications in biomedical field have attracted great attention. However, some fundamental questions other than the development of novel applications should be elucidated before they can actually serve as biomedicines in the clinic. Bio-safety is one of
Changwon Lee et al.
Journal of nanoscience and nanotechnology, 14(6), 4325-4330 (2014-04-18)
Amine and carboxylic groups rich gelatin was used as reducing and stabilizing agent to form highly stable gold nanoparticles for surface-enhanced Raman scattering (SERS) applications. The size of the particle was determined to be 13 nm by TEM with mono-dispersity.
Bernhard F Gibbs et al.
Journal of biomedical nanotechnology, 10(7), 1259-1266 (2014-05-09)
In this study we demonstrate for the first time a new approach for highly specific targeting of viable human leukocytes by functionalised gold nanoconjugates made on the basis of citrate-stabilised gold nanoparticles. This immobilisation involves highly specific recognition of the
Yong Ju Yun et al.
Journal of nanoscience and nanotechnology, 13(11), 7376-7380 (2013-11-20)
We present a simple approach for the fabrication of graphene oxide-encapsulated gold nanoparticles using graphene oxide sheet-wrapping via electrostatic self-assembly. By mixing bovine serum albumin molecule-functionalized gold nanoparticles with graphene oxide dispersion, positively charged bovine serum albumin/gold nanoparticles easily assembled
Yang-Wei Lin et al.
Journal of nanoscience and nanotechnology, 13(10), 6566-6574 (2013-11-20)
A simply approach for the synthesis of Au nanostructures in tea infusions at room temperature is developed. By controlling the concentrations of tea infusions, Au nanostructures in various shapes and sizes have been prepared. From 1 x (original concentration) and
Monic Shah et al.
Journal of nanoscience and nanotechnology, 14(1), 344-362 (2014-04-16)
This article reviews some of the recent biological applications of gold nanoparticles (GNPs) which have been discovered lately by individual studies all around the world. GNPs have emerged as a promising candidates for various biological applications due to their unique
Amelie Heuer-Jungemann et al.
Nanoscale, 5(20), 9503-9510 (2013-08-29)
In the past decade gold nanoparticle-nucleic acid conjugates became progressively important for biomedical applications. Fluorophores attached to nucleic acid-gold nanoparticle conjugates have opened up a new era of biological sensing. The most promising advancement in this field was the invention
Priyatha Premnath et al.
Journal of biomedical nanotechnology, 10(6), 1061-1067 (2014-04-23)
Hybrid biomaterials are a combination of two or more different materials that work synergistically to produce superior properties. Nano structuring of such hybrid materials has also posed complications. In this study, we present, for the first time a nanofibrous hybrid
Fengxian Zheng et al.
Journal of nanoscience and nanotechnology, 13(6), 3990-3998 (2013-07-19)
Gold nanoparticles (AuNPs) are of biomedical importance, such as delivery vectors. Therefore, we used all-atom molecular dynamic simulations to study the interaction of AuNPs with cell membrane (DMPC bilayer). We observed that the AuNPs adhered spontaneously on the surface of
Nidhi Gupta et al.
Journal of nanoscience and nanotechnology, 13(7), 5069-5079 (2013-08-02)
Core-shell morphology of silica (SiO2) coated CdS nanocomposites (SiO2@CdS) of different shapes have been made for better stability, luminescence and photochemical activity of CdS nanoparticles. A thin layer (thickness 1-1.4 nm) of SiO2 shell is deposited over CdS nanorods (CdS-NR)
页码 1 来自 5
页码 1 来自 5