Sentences with phrase «dye molecules»

The charges are generated by dye molecules and the transportation and separation is taken place by other constituents.

Every time water seeps out of your strands» cuticles, it takes dye molecules with it, resulting in dulled - down color.

The emitted fluorescence from all dye molecules in the sample is then collected and projected back to a fast, sensitive detector such as a scientific CMOS camera.

Within that plane, photons are so concentrated that they interact with the dye in pairs, each of which has enough energy to light up the dye molecules.

In this method, a very powerful laser beam strikes dye molecules at half the energy (twice the wavelength) needed to excite them.

The dye molecules function as a kind of «translator» for the solar energy.

The special feature of this experiment was that a single layer of contact sensitive dye molecules was added to the glass surface.

To vary LCLC concentration, the researchers started with different concentrations of the dye molecules in the droplets and permitted the concentration to increase further as water diffused out of the droplets.

This can be accomplished in part by precisely controlling the orientation of dye molecules and their distance from each other.

In the current study, dye molecules responsive to particular ranges of light energy are used as synthetic chromophores.

For over 50 years, chemists have developed metal - based dye molecules for a wide range of different applications, such as displays and solar cells.

We can observe the molecule as we pull on it by staining the DNA vvith dye molecules, illuminating the dye with green light from an argon laser and detecting the fluorescence with a sensitive video camera.

(Acid specifically makes chemical groups on the proteins become positively charged so they can react with the negatively charged dye molecules.)

The smart Empa membrane contains special dye molecules, known as spiropyrans.

Dye molecules can fall off the TiO2 particles and dissolve into tiny pockets of water that have seeped into the cell.

She also designed a novel spectroscopic cell that allowed the change in the ultraviolet - visible spectrum of her dye molecules to be observed as they were reduced.

Individual carbocyanine dye molecules in a sub-monolayer spread have been imaged with near - field scanning optical microscopy.

The pigment molecules are bigger and more complex than standard dye molecules.

This would ideally involve common and environmentally friendly metals like iron, but despite a number of attempts no one has been able to develop an iron - based dye molecule that can emit light until now.

A photon from the sun is absorbed and excites the dye molecule.

Not exact matches

These include more sensitive mass spectrometry for detecting, identifying and quantifying protein molecules, electron microscopy for visualizing an assortment of components of the nano - machine that transports toxins, and fluorescence confocal microscopy, which can label proteins with light emitting dyes.

The team identifies where neurons are firing by injecting the brain with dyes or using genetically engineered proteins that bind to calcium molecules.

When the quantum dots absorb ambient light, they transfer some of that energy to nearby dye particles, causing the crystal violet to release a kind of high - energy oxygen molecule that kills microbes.

Along with the RNAi molecules, the researchers included a fluorescent dye in the worm's bug diet.

It works by tagging the molecules with dyes that glow under certain kinds of light — the same principle behind so - called «black light» images.

By scanning through the sample, plane after plane, researchers can gather the fluorescence signals emitted from molecule - bound dyes over the entire depth.

As an organic molecule, the researchers used an azo dye that consists of two carbon rings with attached functional groups that are polar, i.e. slightly positively or negatively charged.

To study tissue samples, doctors and researchers use stains or dyes that stick to the particular structure or molecule they are looking for.

The researchers began by creating large membrane models with embedded and dyed channel proteins; they then put them on a glass surface and measured them using a single - molecule measuring method known as fluorescence correlation spectroscopy.

In their experiments, the researchers made use of DXP, the organic molecule which is a red dye of the same type as once used by Ferrari for their famous Testarossa.

I already mentioned dye - sensitized solar cells, which is about trying to improve the efficiency of charged transfer of an electron going from a molecule into a semiconductor.

Before the particles enter cells, the dye is tethered to a «quencher» molecule that prevents it from lighting up.

When placed in water, individual molecules of the dye stack up like poker chips, forming microscopic rods.

The test uses tiny molecular cages embedded with a dye that can catch and trap these sugar molecules, even at low levels.

A team at the country's Institute of Materials Research and Engineering, part of the government's lead agency for science and technology, is hoping to do away with the laborious and water - intensive silk - dyeing process by feeding domesticated silkworms (Bombyx mori) fluorescent molecules mixed into their natural diet of mulberry powder.

The hydrothermal synthesis of perylene bisimide dyes now shows for the first time that small molecules can also be generated «in the pressure cooker.»

A fluorescent dye attached to a molecule glows brighter depending on how close it is to the protein that is interacting with that molecule.

DRAQ5 is a small molecule dye which only labels nuclear double - stranded DNA.

Some PLGA molecules are linked to a fluorescent dye to track the disposition of the nanoparticles in animals.

After we label the two dyes onto each wing of the «butterfly molecule», the change in color reports in real time on how the butterfly changes its conformation.

Commercial dyes work by using harsh chemicals, such as ammonia and bleach, to first pry open the cuticle scales to allow colorant molecules inside and then trigger a reaction inside the hair to produce more color.

«Compared to those small molecules used in current hair dyes, graphene flakes are humongous,» said Huang, who is a member of Northwestern's International Institute of Nanotechnology.

A quencher is a molecule that switches off the fluorescence of a dye when it is nearby.

Not only are the graphene sheets non-toxic, but because they're much larger than the colorant molecules used in regular dyes, there's no chance of them passing through the skin.

«By analyzing the molecules they've left behind on their phones, we could tell if a person is likely female, uses high - end cosmetics, dyes her hair, drinks coffee, prefers beer over wine, likes spicy food, is being treated for depression, wears sunscreen and bug spray — and therefore likely spends a lot of time outdoors — all kinds of things,» said study first author Amina Bouslimani.

The shampoos help trap water molecules before they can do any damage, while the conditioners contain a special silicone that locks dye in and water out.

Allergic contact dermatitis is rare but occurs when a pet's skin overreacts to molecules in the environment such as nickel, rubber, wool, dyes and chemicals.