sciencehabit writes “Most magnets shrug off tiny temperature tweaks. But now physicists have created a new nanomaterial–an ultrathin 10-nanometer layer of nickel grafted onto a 100-nanometer-thick wafer of a substance called vanadium oxide–that dramatically changes how easily it flips its magnetic orientation when heated or cooled only slightly. The effect, never before seen in any material, could eventually lead to new types of computer memory.” Read more of this story at Slashdot.
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Nanomaterial May Be Future of Hard Drives
MTorrice writes “Lithium-sulfur batteries promise to store four to five times as much energy as today’s best lithium-ion batteries. But their short lifetimes have stood in the way of their commercialization. Now researchers demonstrate that a sulfur-based polymer could be the solution for lightweight, inexpensive batteries that store large amounts of energy. Battery electrodes made from the material have one of the highest energy-storage capacities ever reported” Litihium Ion batteries should maintain capacity for about 1000 cycles, whereas Lithium-sulfur batteries traditionally went kaput after about 100. But it looks like they are getting pretty close to something feasible, from the article: “The best performing copolymer consisted of 90% sulfur by mass. Batteries using this copolymer had an initial storage capacity of 1, 225 mAh per gram of material. After 100 charge-discharge cycles, the capacity dropped to 1, 005 mAh/g, and after 500 cycles it fell to about 635 mAh/g. In comparison, a lithium-ion battery typically starts out with a storage capacity of 200 mAh/g but maintains it for the life of the battery, Pyun says.” Read more of this story at Slashdot. 
Daniel_Stuckey writes “The contacts on Zambada-Ortiz’s phone, which officials seized, would prove critical in pinpointing cartel stash houses strewn across Sinaloa state in mountainous northwest Mexico. Crucially, the episode would breathe new life into the joint US-Mexico dragnet that recently caught Chapo, who’d been at large for 13 years after famously escaping from Mexican prison in a laundry basket. Zambada-Ortiz’s capture and the data scraped from his phone led to more and more Sinaloa phones until a month ago, when Mexican authorities (moving on American intelligence work) successfully carried out a number of raids that scored a cache of weapons and the arrests of a few of Chapo’s senior henchmen. With each apprehension came another phone full of leads, ‘a new trove of information for officials to mine, ‘ as TIME reported. Then, sometime last week, Mexican commandos ‘traced a number stored in a seized cell phone to a stash house outside the provincial capital of Culiacan, where they believed Guzman was hiding, ‘ TIME added.” Read more of this story at Slashdot. 
