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Tag: "quantum" at biology news

Quantum Dots Research Leads to New Knowledge about Protein Binding in Plants

...nd his colleagues utilized cadmium selenide (CdSe) quantum dotscoated with zinc sulphide as fluorescent probe...s had adiameter of 6.3 nm. The team terminated the quantum dots withcarboxylic groups by reacting them with mercaptoacetic acid. Then theyconjugated the quantu...

Nano-Probes Allow an Inside Look at Cell Nuclei

...-sized crystals of semiconductor materials. Called quantum dots, these microscopic crystals have shown promis... even closer to the genetic action by transporting quantum dots inside cell nuclei. "We took the tool Paul developed and applied it to a problem faced by biol...

Breakthrough method in nanoparticle synthesis paves the way for new pharmaceutical and biomedical applications

...on, these porous nanoparticles can be used to host quantum dots and magnetic nanoparticles for bioimaging and quantum device applications. ...

Self-assembled nano-sized probes allow Penn researchers to see tumors through flesh and skin

...that use semiconductor-based "quantum dots." These quantum dots, however, are hard matter, which could collect within the circulatory system, potentially causing a stroke. According to the Penn researchers, brightly emissive polymersomes define the first nanotech optical imaging platform based on non-aggrega...

Bioelectronic ‘signatures?hold key to DNA mutations

...tom-made several individual nanocrystals, known as quantum dots, from four heavy metal salts of lead, cadmium, zinc and copper. Such nanocrystals were selected owing to their ability to yield distinct electronic signatures, with four well-resolved current peaks. Next, the nanocrystals are piggybacked onto in...

Team Invents Device For Weighing Individual Molecules

...cale masses would be quite useful in areas such as quantum optics, in which individual atoms are manipulated. The next step for Roukes' team at Caltech is to engineer the interfaces so that individual biological molecules can be weighed. For this, the team will likely collaborate with various proteomics lab...

ORNL, UC Berkeley unravel real-world clues to Earth's mysteries

...l Banfield has been able to take her research up a quantum step by obtaining the first glimpse into the complex proteome dataset of this microbial community," Hettich said. "To do this, it was critical that we bring together researchers with expertise in biology and ecology of microbial communities, analytic...

Quantum dots provide a faster, more sensitive method for detecting respiratory viral infections

...lti-colored, microscopic fluorescent beads, called quantum dots, which bind to molecular structures that are ... Vanderbilt researchers report that not only can a quantum dot system detect the presence of particles of the respiratory syncytial virus (RSV) in a matter of ...

Nanoscale method for investigating living systems

... inner workings of cells. The specks are known as quantum dots or inorganic semiconductor nanocrystals. Meas..., found that by applying voltages to a solution of quantum dots and membranes similar to those of living cells, the dots would be pressed into the membranes. T...

Progress on HIV/AIDS significant but insufficient

...re in low- and medium-income countries. Given the quantum worsening in the epidemic's trajectory, Joint United Nations Programme on HIV/AIDS (UNAIDS) Executive Director Peter Piot said the gap between need and action remained enormously wide. Unless AIDS was controlled, the epidemic would expand for decades...

NHGRI expands effort to revolutionize sequencing technologies

...st of sequencing a genome, but they will provide a quantum leap in the scope and scale of research aimed at uncovering the genomic contributions to common diseases, such as cancer, heart disease and diabetes." Over the past decade, DNA sequencing costs have fallen more than 50-fold, fueled in large part by ...

Method slashes quantum dot costs by 80 percent

... toward the large-scale manufacture of fluorescent quantum dots, scientists at Rice University have developed...ew method of replacing the pricey solvents used in quantum dot synthesis with cheaper oils that are commonplace at industrial chemical plants. Rice's study, w...

The right drug at the right time

... toward the large-scale manufacture of fluorescent quantum dots, scientists at Rice University have developed...ew method of replacing the pricey solvents used in quantum dot synthesis with cheaper oils that are commonplace at industrial chemical plants. Rice's study, w...

'Smart' nanoprobes light up disease

...groups have used targeted nanostructures including quantum dots for molecular imaging, but they have never be...ing problem by using emissive nanoparticles called quantum dots that give off light in the near-infrared (NIR), a rare portion of the spectrum that has no back...

New nanosensor uses quantum dots to detect DNA

...nents. "We are the first to demonstrate the use of quantum dots as a DNA sensor," Wang said. Quantum dots a...ed his team in exploiting an important property of quantum dots: They can easily transfer energy. When a laser shines on a quantum dot, it can pass the energy ...

Cellular scale drug delivery from the inside out

...cles, or semiconductor nanocrystals ?also known as quantum dots ?and are held in place by chemical bonds. Once the nanospheres are inside the target cells, a trigger is used to pop the caps off and release the drug. "We're looking at two levels of control," Lin said of the trigger mechanism. "One level is t...

Research could lead to better drugs and whiter whites

... to 'flow through' the barrier ?a process known as quantum mechanical tunnelling. "We have provided new insight into how enzymes work from painstaking efforts of a large interdisciplinary group based on detailed experimental observations and theoretical analysis at the atomic level," said Professor Scrutton...

Connect the Quantum Dots

... with Luminescent Quantum Dots", demonstrates that quantum dots can one day replace conventional organic dyes... By using the unique photophysical properties of quantum dots, researchers Drs. Francisco Raymo, Ibrahim Yildiz, and Massimilliano Tomasulo were able to iden...

Methane-belching bugs inspire a new theory of the origin of life on Earth

...as suggest a totally new perspective. It's truly a quantum leap--a milestone." The paper also proposes mechanisms by which Ferry and House's mineral-bound protocell could have evolved into a free-living cell, and how the metabolism of acetate to methane could have evolved based on the pathways they discover...

Immune cell communication key to hunting viruses, Jefferson immunologists show

...iosensor out of semiconductor nanoparticles called quantum dots. These served as a unique scaffold to carry p... we try to mimic the positioning of MHC protein on quantum dots, which we believe is similar to what it is on the cell membrane, we have this very strong bindi...

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