«We're exploring the use
of nanosphere materials other than polystyrene, as well as nanoparticle shapes other than spheres,» Chang says.
Led by Prof. Matthias Kling, the LAP - physicists studied silica
nanospheres with diameters of 50 to 550 nanometers, which were chemically synthesized by Eckart Rühl's group at Freie Universität Berlin.
Previously, the Canadian researchers made photonic crystals using stacks of hundreds of
silica nanospheres embedded in a polymer.
Finally, it is worth highlighting that the best results were obtained when the factors were delivered encapsulated
in nanospheres during the early phase of the disease replicated in the model.
Close - packed arrays of
PS nanospheres were oxygen - plasma — etched to create the initial template for deep reactive - ion etching to make silicon nanorods.
A Potential of Peanut Agglutinin - Immobilized Fluorescent
Nanospheres as a Safe Candidate of Diagnostic Drugs for Colonoscopy.
Sakuma S, Higashino H, Oshitani H, Masaoka Y, Kataoka M, Yamashita S, Hiwatari KI, Tachikawa H, Kimura R, Nakamura K, Kumagai H, Gore JC, Pham w. Essence of affinity and specificity of peanut agglutinin - immobilized
fluorescent nanospheres with surface poly (N - vinylacetamide) chains for colorectal cancer.
The potential use of the enhanced nonlinear properties of
gold nanospheres in photothermal cancer therapy.
Sakuma S, Kumagai H, Shimosato M, Kitamura T, Mohri K, Ikejima T, Hiwatari KI, Koike S, Tobita E, McClure R, Gore JC and Pham W. Toxicity studies of coumarin 6 - encapsulated
polystyrene nanosphere conjugated with peanut agglutinin and poly (N - vinylacetamide) as a colonoscopic imaging agent in rats.
The researchers also found that nanorods targeted to lung tissue in mice accumulated at a rate that was two-fold
over nanospheres engineered with the same targeting antibody.
Xu et al. show how rounds of etching with polystryrene (PS)
nanosphere templates can create periodic arrays of silicon nanotubes with controlled pitch, height, and inner and outer diameters.
That company is pioneering medical uses for carbon molecules
called nanospheres, such as attacking cancer cells and dramatically improving magnetic - resonance - imaging contrasts.
Our methodology relies on the strong shaping effects of a polystyrene
nanosphere monolith template and a double - solvent — induced heterogeneous nucleation approach.
Thus far, researchers have successfully «trapped»
silicon nanospheres, silica beads, polystyrene beads, silicon nanowires, germanium nanowires and metal nanostructures.
These
include nanospheres which can be biodegradable and could potentially be used in drug delivery applications, as well as nanofibers which form gel - phase materials, that can be used in a variety of applications, including cosmetics or biodegradable plastics that can withstand harsh conditions.
«
Nanospheres shield chemo drugs, safely release high doses in response to tumor secretions.»
In this project they will investigate using
tiny nanospheres to deliver their novel drugs and release them slowly over time, which hopefully will preserve vision by maintaining the health of RGCs and the optic nerve.
Sakuma S, Yamashita S, Hiwatari KI, Hoffman RM, Pham W. Lectin - immobilized fluorescent
nanospheres for targeting to colorectal cancer from a physicochemical perspective.
• Robust structural colour is inspired by a tropical bird (Dec 2016) •
Bacteria nanospheres may help camouflage tiny crustaceans (Nov 2016)
The
PS nanospheres were then further etched to create templates for depositing nickel rings at the top of the nanorods.
She could find no other instance of animals using silica
nanospheres as flashing reflectors, though the white color of several insects apparently comes from a layer of silica that reflects white light.
10 Yale researchers have created
plastic nanospheres that encapsulate proteins called cytokines, which stimulate the immune system's killer T - cells.
While
gold nanospheres, without any accompanying drug, were found to cause significant cell damage, treatment - resistant cell populations did eventually recover several days after the radiotherapy.
These molecules were delivered encapsulated in microspheres or
in nanospheres, even smaller than the former, comprising a biocompatible, biodegradable polymer: Poly Lactic - co-glycolic Acid (PLGA), which allows them to be released continuously and gradually.
Once inside, these «
nanospheres» were exposed to radiotherapy.
After removal of the PS
nanospheres, the rings guided the final interior etching to form nanotubes.
When the scientists mixed nanocubes coated with DNA tethers on all six sides with
nanospheres of approximately the same size, which had been coated with complementary tethers, these two differently shaped particles did not segregate as would have been expected based on their normal packing behavior.
As soon as the electromagnetic waves of the light field hit
the nanospheres, near - fields formed at the surface and began to pulsate.
The emission of electrons is like a ping - pong game on the surface of
the nanospheres that can be controlled with a precision of attoseconds,» explains Prof. Thomas Fennel from the University of Rostock.
The researchers observed this effect by using particle detectors to monitor the flight paths of electrons emitted from the near - fields of
the nanospheres within the passage of the laser pulse.
The outside of the lip contains no silica
nanospheres, so when the lip is furled, no light is reflected.
«We are using
the nanosphere to shape the pattern of light, which gives us the ability to shape the resulting nanostructure in three dimensions without using the expensive equipment required by conventional techniques,» Chang says.
The researchers have also shown that they can get
the nanospheres to self - assemble in a regularly - spaced array, which in turn can be used to create a uniform pattern of 3 - D nanostructures.
The nanospheres are transparent, but bend and scatter the light that passes through them in predictable ways according to the angle that the light takes when it hits the nanosphere.
The researchers control the nanolithography by altering the size of
the nanosphere, the duration of light exposures, and the angle, wavelength and polarization of light.
An ultra-sensitive needle measures the voltage that is generated while
the nanospheres are illuminated.
As well as
nanospheres they tested the approach on nanotriangles as well.
Depending on the shape, the application, or the components, nanomaterials may be called by a variety of different names, including nanoparticles, nanotubes, nanofilms, nanoshells,
nanospheres, nanowires, nanoclays, nanoconcrete, nanopolymers, and much more.
When different voltages are applied, the electrolyte goes in and out of the polymer, which swells and shrinks, altering the distance between
the nanospheres.
Victor Lin, a professor of chemistry at Iowa State University and a program director for the U.S. Department of Energy's Ames Laboratory, has just invented
a nanosphere - based catalyst that may help revolutionize the production of biodiesel.
As a result,
the nanospheres, which can be incorporated into existing biodiesel plants and recycled, will help make production far cheaper, faster and less toxic.
The nanospheres, loaded up with acidic and basic catalysts, convert vegetable oils or animal fats into fuel by reacting with the free fatty acids and oils.
With the help of Caitlin Inc., a company set up to produce and market the technology, Lin hopes to build enough of
the nanosphere catalysts over the next 18 months to augment biodiesel production from a lab scale to a plant scale of 300 gallons per day.