http://www.physorg.com/ en-us Physorg.com internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine. (PhysOrg.com) -- Chemists and engineers at the University of Warwick have found that exposing particular mixtures of polymer particles and other materials to sudden freeze-drying can create a high-tech armored foam that could be used for a number of purposes, including a new range of low power room temperature gas sensors. http://www.physorg.com/news167996488.html Nanotechnology Tue, 28 Jul 2009 10:50:01 EST news167996488 Nanoparticles are being developed to perform a wide range of medical uses - imaging tumors, carrying drugs, delivering pulses of heat. Rather than settling for just one of these, researchers at the University of Washington have combined two nanoparticles in one tiny package. http://www.physorg.com/news167933174.html Nanotechnology Mon, 27 Jul 2009 17:17:04 EST news167933174 By studying gold nanoparticles with highly uniform sizes and shapes, scientists now understand how they lose energy, a key step towards producing nanoscale detectors for weighing any single atom. http://www.physorg.com/news167912822.html Nanotechnology Mon, 27 Jul 2009 11:27:29 EST news167912822 Arsenic trioxide has a long history as a potent human poison, but it also has proven valuable as one of the primary treatment options for acute promyelocytic leukemia. Efforts to use arsenic trioxide to treat other types of cancer are under way, but clinical trials are revealing that the extreme toxicity of this material is likely to limit its utility as a broad-spectrum anticancer agent. http://www.physorg.com/news167412238.html Nanotechnology Wed, 22 Jul 2009 13:30:01 EST news167412238 Current methods of detecting breast cancer suffer from low sensitivity, limited spatial resolution, or the need to use complicated and expensive radioisotope-based technologies. A new report from investigators at the Emory-Georgia Tech Nanotechnology Center for Personalized and Predictive Oncology suggests that targeted iron oxide nanoparticles may overcome these limitations and could serve as novel imaging agents for the early detection of breast tumors. http://www.physorg.com/news167412130.html Nanotechnology Tue, 21 Jul 2009 16:50:01 EST news167412130 (PhysOrg.com) -- Surgical removal of a tissue sample is now the standard for diagnosing cancer. Such procedures, known as biopsies, are accurate but offer only a snapshot of the tumor at a single moment in time. http://www.physorg.com/news167335574.html Nanotechnology Tue, 21 Jul 2009 01:10:01 EST news167335574 Scientists at Argonne National Laboratory's CNM Nanophotonics Group have measured how light emission from individual colloidal semiconductor nanocrystals, or quantum dots, is modified when in proximity to smooth metal films. http://www.physorg.com/news167323390.html Nanotechnology Mon, 20 Jul 2009 15:43:54 EST news167323390 In future therapies, synthetic nanoparticles may well be able to ferry medicines and even genes to targets inside the body. These nanovehicles can now be directly tested and optimized using a highly sensitive microscopic method that can trace single particles all the way into a cell. http://www.physorg.com/news167288832.html Nanotechnology Mon, 20 Jul 2009 06:20:01 EST news167288832 Nanostructured materials have garnered great interest worldwide due to their unique size-dependent properties for chemical, electronic, structural, medical and consumer applications. http://www.physorg.com/news166722374.html Nanotechnology Mon, 13 Jul 2009 16:46:39 EST news166722374 If that office inkjet printer has become just another fixture, it's time to take a fresh look at it. Similar technology may soon be used to develop paper-based biosensors that can detect certain harmful toxins that can cause food poisoning or be used as bioterrorism agents. http://www.physorg.com/news166703176.html Chemistry Mon, 13 Jul 2009 11:31:13 EST news166703176 The more dots there are, the more accurate a picture you get when you connect them. Cancer researchers adopting that philosophy have developed a new imaging technology that could give scientists the ability to simultaneously measure as many as 100 or more distinct features in or on a single cell. In a disease such as cancer, that capability would provide a much better picture of what is going on in individual tumor cells. http://www.physorg.com/news165776414.html Nanotechnology Fri, 03 Jul 2009 12:00:02 EST news165776414 Researchers in the Department of Physics and Astronomy at the University of Leicester have developed a new synthesis method, which has led them to the discovery of fluorescent silicon nanoparticles and may ultimately help track the uptake of drugs by the body's cells. http://www.physorg.com/news165584198.html Nanotechnology Tue, 30 Jun 2009 12:37:42 EST news165584198 Two new construction manuals are now available for the world's smallest lamps. Based on these protocols, scientists from the Max Planck Institute of Colloids and Interfaces have tailor-made nanoparticles that can be used as position lights on cell proteins and, possibly in the future as well, as light sources for display screens or for optical information technology. http://www.physorg.com/news165236713.html Nanotechnology Fri, 26 Jun 2009 12:50:01 EST news165236713 (PhysOrg.com) -- Maxwell`s demon may be making a comeback. Physicists know that the demon, an imaginary creature that decreases the entropy of a system, cannot exist in macroscopic systems due to the energy it requires to perform its role. However, a recent study has shown that, on the nanoscale, Maxwell`s demon might be able to do its work with much less energy than previously thought due to tiny thermal fluctuations that occur in small systems. http://www.physorg.com/news165065343.html Physics Wed, 24 Jun 2009 12:29:31 EST news165065343 (PhysOrg.com) -- The recent explosion in the development of nanomaterials with enhanced performance characteristics for use in commercial and medical applications has increased the likelihood of people coming into direct contact with these materials. http://www.physorg.com/news164638938.html Nanotechnology Fri, 19 Jun 2009 14:03:06 EST news164638938 Shape is turning out to be a particularly important feature of some commercially important nanoparticles -but in subtle ways. New studies* by scientists at the National Institute for Standards and Technology (NIST) show that changing the shape of cobalt nanoparticles from spherical to cubic can fundamentally change their behavior. http://www.physorg.com/news164454845.html Nanotechnology Wed, 17 Jun 2009 11:30:10 EST news164454845 Nanoparticles specially engineered by University of Central Florida Assistant Professor J. Manuel Perez and his colleagues could someday target and destroy tumors, sparing patients from toxic, whole-body chemotherapies. http://www.physorg.com/news164379539.html Nanotechnology Tue, 16 Jun 2009 14:40:03 EST news164379539 Scientists and engineers at UC Santa Barbara and other researchers have developed a nanoparticle that can attack plaque -- a major cause of cardiovascular disease. The new development is described in a recent issue of the Proceedings of the National Academy of Sciences. http://www.physorg.com/news163347408.html Nanotechnology Thu, 04 Jun 2009 15:18:08 EST news163347408 An over-the-counter prostate cancer test kit could be coming to a pharmacy near you, thanks to the collaborative work of a University of Central Florida chemist and M.D. Anderson Cancer Center Orlando researchers. http://www.physorg.com/news163255080.html Medicine & Health Wed, 03 Jun 2009 13:38:36 EST news163255080 Scientists are reporting discovery of a potential new alternative to aspirin, ReoPro, and other anti-platelet agents used widely to prevent blood clots in coronary artery disease, heart attack and stroke. Their study, scheduled for the June 23 issue of ACS Nano, a monthly journal, involves particles of silver -- 1/50,000th the diameter of a human hair -- that are injected into the bloodstream. http://www.physorg.com/news162666750.html Nanotechnology Wed, 27 May 2009 18:12:56 EST news162666750 Dear EarthTalk: What is "nanotechnology"? I've heard that nanoparticles are already in consumer products, yet we haven't really studied their potential health impacts. (Dan Zeff, San Francisco) http://www.physorg.com/news162480951.html Nanotechnology Mon, 25 May 2009 14:38:25 EST news162480951 In an advance toward preventing car windshields and eyeglasses from fogging up, researchers in China are reporting development of a new way to make raspberry-shaped nanoparticles that can give glass a permanent antifogging coating. Their study is scheduled for the June 11 edition of ACS` The Journal of Physical Chemistry C. http://www.physorg.com/news162060868.html Nanotechnology Wed, 20 May 2009 17:55:05 EST news162060868 Without knowing how much of an industrial chemical is being produced, it is almost impossible for scientists to determine if it poses any threat to the environment or human health. http://www.physorg.com/news162041135.html Nanotechnology Wed, 20 May 2009 12:25:56 EST news162041135 A research team at Northwestern University has demonstrated a tool that can precisely deliver tiny doses of drug-carrying nanomaterials to individual cells. http://www.physorg.com/news161862130.html Nanotechnology Mon, 18 May 2009 10:42:37 EST news161862130 Researchers at Eindhoven University of Technology for the first time have shown the earliest stages in biomineralization, the process that leads to the formation of bones, teeth and sea shells. http://www.physorg.com/news161518253.html Nanotechnology Thu, 14 May 2009 11:11:40 EST news161518253 (PhysOrg.com) -- In the world of small things, shape, order and orientation are surprisingly important, according to findings from a new study by chemists at Washington University in St. Louis. http://www.physorg.com/news160669215.html Chemistry Mon, 04 May 2009 15:21:18 EST news160669215 (PhysOrg.com) -- It has long been known that heat is an effective weapon against tumor cells. However, it's difficult to heat patients' tumors without damaging nearby tissues. http://www.physorg.com/news160665499.html Nanotechnology Mon, 04 May 2009 14:18:53 EST news160665499 (PhysOrg.com) -- A new generation of anti-impotency drugs based on nanoparticles might be coming quickly. Researchers at the Albert Einstein College of Medicine in New York presenting at the 104'th Annual Meeting of the American Urological Association have discovered a new potential application for drug carrying nanoparticles as a topical treatment for erectile dysfunction (ED). This breakthrough should hopefully stimulate further work in this area. http://www.physorg.com/news160165535.html Nanotechnology Tue, 28 Apr 2009 19:26:14 EST news160165535 (PhysOrg.com) -- An interdisciplinary team of researchers at Brigham and Women`s Hospital (BWH) and the Harvard-MIT Division of Health Sciences and Technology (HST) has demonstrated a better way to deliver cancer drugs directly to tumors. The researchers used specially engineered nanoparticles that can inhibit a signaling pathway and deliver a higher concentration of medication to the specific area. http://www.physorg.com/news159550605.html Nanotechnology Tue, 21 Apr 2009 16:37:09 EST news159550605 A multi-disciplinary team of scientists from the University of Leicester could be potentially paving the way for the development of a powerful new strategy for both the early diagnosis and treatment of prostate cancer. http://www.physorg.com/news159191419.html Nanotechnology Fri, 17 Apr 2009 12:50:44 EST news159191419