Manipulating tiny objects like single cells or nanosized beads often requires relatively large, unwieldy equipment, but now a system that uses sound as a tiny tweezers can be small enough to place on a chip, according to Penn State engineers.
Using nanoparticles designed specifically to produce a bright Raman spectroscopic signal, a team of investigators has shown that it can simultaneously track as many as 10 different optical tags in a living animal.
By combining a gold nanoparticle with a unique family of nucleic acids, researchers at Northwestern University have created a new type of intracellular reporting system that with a flash of light reveals the presence and quantity of a wide variety of biologically important molecules.
By injecting multiwalled carbon nanotubes into tumors and heating them with a quick, 30-second zap of a laser, a multi-institutional team of researchers has developed a new type of therapy that effectively kills kidney tumors in nearly 80% of treated mice.
Nanoparticle delivery of diphtheria toxin-encoding DNA that expresses selectively in ovarian cancer cells reduced the burden of ovarian tumors in mice, and researchers expect that this therapy could be tested in humans with advanced ovarian cancer within 18 to 24 months.
Using a new type of paramagnetic nanoparticle and a nuclear magnetic resonance (NMR) system built into a microfluidic device, a team of investigators at the Massachusetts General Hospital and Harvard Medical School has created an assay system capable of detecting as few as two cancer cells in 1 microliter of biological fluid. In addition, the new assay requires little sample processing and produces results in less than 15 minutes.
For cancer drug developers, finding an agent that kills tumor cells is only part of the equation. The drug also must spare healthy cells, and ideally its effects will be reversible to cut short any potentially dangerous side effects. Investigators from the University of Illinois at Urbana-Champaign report that they have assembled a new cancer drug delivery system that, in cell culture, achieves all of the above.
Nanotechnologies are presented as providing unprecedented technological solutions, yet serous environmental risks and costs are being trivialised or ignored, the International Persistant Organic Pollutants Elimination Network (IPEN) argues in a new paper.
Associate Professor Lam Yeng Ming, a lecturer with the School of Materials Science and Engineering at the Nanyang Technological University (NTU), has been awarded one of the three inaugural L'Oreal Singapore for Women in Science National Fellowships 2009.
Was verbindet einen Lautsprecher, einen Sensor und drahtlose Energieuebertragung? Gemeinsam ist allen die Nutzung von Oberflaecheneffekten: Thermoakustische, kapazitive und induktive Effekte werden dabei durch Beschichtungen hervorgerufen oder kontrolliert.
Scientists in Singapore have been awarded S$27.5 million in research funding for 28 projects in four key areas of Sustainable Development, namely, Carbon Capture and Utilisation, BioEnergy and BioFuels, Sustainable Construction and Sustainable Materials.
The nervous system's circuitry is linked together via intercellular junctions known as synapses, and signal transmission across these connections depends on neurotransmitters?specific chemicals that directly deliver excitatory or inhibitory signals from one neuron to another. Scientists are now able to monitor receptor activity in living cells with unprecedented precision.