Photothermal effects of supramolecularly assembled
gold nanoparticles for the targeted treatment of cancer cells.
«Our fundamental contribution in this work is to judiciously prepare a star - shaped block co-polymer in which the inner block has the capability to coordinate with metal precursors while the outer block allows photo - responsive materials to interact, which in turn renders the crafting of photo - responsive
gold nanoparticles for light - enabled reversible and reliable self - assembly.»
Not exact matches
That's one potential application
for a new technology that combines water - repelling yet light - sensitive and water - absorbing materials into polymeric nano - reactors
for creating photo - responsive
gold nanoparticles.
«We envision that these photo - responsive polymer - capped
gold nanoparticles could one day serve as nano - carriers
for drug delivery into the body using our robust and reversible process
for assembly and disassembly,» said Zhiqun Lin, a professor in the Georgia Tech School of Materials Science and Engineering.
A store - bought moisturizer could become a high - tech remedy
for chronic diabetic wounds, thanks to the addition of specialized
gold nanoparticles.
A «Trojan horse» treatment
for an aggressive form of brain cancer, which involves using tiny
nanoparticles of
gold to kill tumour cells, has been successfully tested by scientists.
Gold nanoparticles provide bigger surface area
for the affinity interactions between the antibody - antigen and thus enhance the translated signal, while the antifouling molecules help to resist the non-specific adsorption of unwanted proteins from serum onto the transducer surface.
The free electrons in both BP and
gold nanoparticles are then transferred into the LTO semiconductor, where they act as an electric current
for water splitting.
The researchers developed a small, breath - diagnostic array based on flexible
gold -
nanoparticle sensors
for use in an «electronic nose.»
In this platform, an aqueous or oil droplet containing
gold nanoparticles and captured analytes is allowed to evaporate on a slippery substrate, leading to the formation of a highly compact
nanoparticle aggregate
for surface enhanced Raman scattering (SERS) detection.
The work used
gold nanoparticles and titanium dioxide as a catalyst to speed the process and determined that water serves as a co-catalyst
for the reaction that transforms carbon monoxide into carbon dioxide.
Because the plasmons are confined to the tiny gap, they are more sensitive than light is
for sensing the motion of small objects like the
gold nanoparticle.
«Utilizing the
nanoparticle carrier with a core made of
gold nanoparticles also made it possible to obtain evidence
for the entry of
nanoparticles into the tumor; we looked at the tumor under the electron microscope and observed the particles,» said post-doctoral fellow and first author Xiangsheng Liu.
«The unique electronic structure of graphene along with its particular surface topography make it an ideal substrate
for decoration with
gold nanoparticles.
Research conducted at Japan's National Institute
for Materials Science built on previous findings that
gold nanoparticles can encourage stem cells in the bone marrow to differentiate into bone cells, and that specific biomolecules can inhibit or promote stem cell differentiation.
A team headed by Yen Hsun Su of the Research Center
for Applied Sciences at the Academia Sinica in Taipei, Taiwan, dipped Bacopa caroliniana, a plant often used in aquaria, into a solution of
gold nanoparticles.
SPR is the basis of many standard tools
for measuring adsorption of materials onto planar metal (typically
gold and silver) surfaces or onto the surface of metal
nanoparticles.
Furthermore, as part of this study the team demonstrated the ability to position
gold nanoparticles into prescribed 2D architectures less than two nanometers apart from each other along the crystal structure — a critical feature
for future quantum devices and a significant technical advance
for their scalable production, said co-lead author Wei Sun, Ph.D., Wyss Institute Postdoctoral Fellow.
The technique, described in Biomaterials, uses
gold nanoparticles and Raman scattering, a technology previously developed by Qian and Nie
for cancer cell detection (2007 Nature Biotech paper, 2011 Cancer Research paper on circulating tumor cells).
A new method
for building «drawbridges» between metal
nanoparticles may allow electronics makers to build full - color displays using light - scattering
nanoparticles that are similar to the
gold materials that medieval artisans used to create red stained - glass.
The study, «Photosensitivity of Neurons Enabled by Cell - Targeted
Gold Nanoparticles,» was supported by the National Institutes of Health, Beckman Initiative
for Macular Research and Research to Prevent Blindness.
Gold nanoparticles serve as catalysts
for obtaining valuable chemical products based on glycerol.
«
Gold nanoparticles were ideal
for this study because they are generally inert at their core,» explains Vikesland.
Important achievements have been done in the preparation and characterization of: i)
Gold nanoparticles stabilised through thiol derivatised organic - and bio-molecules; ii) nanocomposite coatings
for low friction and high wear resistance applications and iii) new nanostructured materials
for hydrogen storage.
The
gold - platinum
nanoparticles, which are about hundred thousand times thinner than a human hair, also are efficient at converting laser radiation into heat and killing the cancer cell, making them promising
for another cancer treatment known as photo - thermal therapy.
The effects Yang and his colleagues observed
for gold - copper bimetallic
nanoparticles should hold true
for other carbon dioxide reduction catalysts as well.