To improve the technique, they focused
on gold nanoparticles — spheres only 20 nanometers in diameter, more than 300 times smaller than a human blood cell.
Single stranded DNA strands on the edges (green) and vertices (red) match up with complementary strands
on gold nanoparticles.
Not exact matches
Engineers are working
on a way to combine tiny, tiny pieces of
gold, called
nanoparticles, with an elastic polymer to create a stretchable, conductive material.
Glutathione - capped
gold nanoparticles were then adsorbed
on hydroxyapatite and glutathione was removed by subsequent calcination.
A landmark experiment
on wave interference from the early 1800s is revisited using
gold nanoparticles.
When
gold nanoparticles combine with red, blue and green glowing proteins, as in this sensor, it's possible to discern drug - induced physical and chemical changes
on a cell's surface.
Gold nanoparticles can make the pink «get ready to be a parent» mark
on home pregnancy tests much easier to read.
As the potential mother urinates into a sample - collection area and the pee migrates to a test strip, some of the antibody - coated
gold nanoparticles on the strip latch onto the hCG, migrate up the paper, and collect at an indicator line.
Naomi Halas and co-workers at Rice University in Houston laced a mixture of water and ethanol with
gold — silica
nanoparticles and shone laser light
on the suspension from above.
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.
Viewed under an electron microscope, the
gold nanoparticles and nanowires appear fused together like berry clusters
on a branch.
In a second step, by capitalizing
on their expertise in the field of laser ablation, they decorated these graphenated - MWCNT (g - MWCNT) structures with 2 - 3 nm - diameter
gold nanoparticles (Au - NP).
Tomorrow's computers will run
on light, and
gold nanoparticle chains show much promise as light conductors.
The DNA - modified
nanoparticles —
gold in this case — are positioned
on a pre-patterned template made of complementary DNA.
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.
Researchers report that they can boost the amount of data stored
on a disc 10,000-fold by using
gold nanoparticles.
In one experiment, they encoded the same sequence
on all the octahedron's tethers, and attached strands with a complementary sequence to
gold nanoparticles.
The researchers also injected the cell with
gold nanoparticles, then trained a laser
on them to heat up different parts of the cell.
«New light shed
on structure of
gold nanoparticles in water.»
A new blood test using
gold nanoparticles could soon give oncologists an early and more accurate prognosis of how cancer treatment is progressing and help guide the
on - going therapy of patients.
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).
In this case, the
gold nanoparticles are conjugated with antibodies against SSEA - 5 or TRA -1-60, proteins that are found
on the surfaces of stem cells.
Gold nanoparticles serve as catalysts for obtaining valuable chemical products based
on glycerol.
Research Paper Dual radiosensitization and anti-STAT3 anti-proliferative strategy based
on delivery of
gold nanoparticle - oligonucleotide nanoconstructs to head and neck cancer cells.
Zheng and colleagues demonstrated their thermo - electric nanotweezers
on plasmonic silver and
gold nanoparticles.
A team at the University of Leeds has discovered that shaping
gold nanoparticles in the form of minuscule tubes sees them take
on a number of new properties, including the ability to be heated up to destroy cancer cells.
The technology, described in a paper in the ACS journal Nano Letters, relies
on a novel plasmonic photoelectrode architecture of light - activated
gold nanoparticles that harvest sunlight to drive photocatalytic reactions by efficient, non-radiative plasmon... Read more →