Deflector shields allowed Star Trek and other sci-fi franchises to have long space battles. Without them, one good strike and everyone was dead – that wouldn’t lend itself to sequels.
We don’t need shields for space battles yet, but we do need them to get to Mars. Cosmic radiation will kill or injure every astronaut unless we can deflect the radiation away from the spacecraft. We’re just about to build real deflectors, and our teachers are the magnetic fields we find ........ Read more »
Bamford, R., Kellett, B., Bradford, J., Todd, T., Benton, M., Stafford-Allen, R., Alves, E., Silva, L., Collingwood, C., Crawford, I.... (2014) An exploration of the effectiveness of artificial mini-magnetospheres as a potential solar storm shelter for long term human space missions. Acta Astronautica, 105(2), 385-394. DOI: 10.1016/j.actaastro.2014.10.012
Bamford, R., Gibson, K., Thornton, A., Bradford, J., Bingham, R., Gargate, L., Silva, L., Fonseca, R., Hapgood, M., Norberg, C.... (2008) The interaction of a flowing plasma with a dipole magnetic field: measurements and modelling of a diamagnetic cavity relevant to spacecraft protection. Plasma Physics and Controlled Fusion, 50(12), 124025. DOI: 10.1088/0741-3335/50/12/124025
Walsh, B., Foster, J., Erickson, P., & Sibeck, D. (2014) Simultaneous Ground- and Space-Based Observations of the Plasmaspheric Plume and Reconnection. Science, 343(6175), 1122-1125. DOI: 10.1126/science.1247212
New satellite measurements have given unprecedented spatial and temporal resolution to Antarctice melting. The data indicates the Western shelf is melting faster than thought and the Eastern shelf is no longer gaining thickness. Important information to predict future sea level rises!... Read more »
Paolo, F., Fricker, H., & Padman, L. (2015) Volume loss from Antarctic ice shelves is accelerating. Science. DOI: 10.1126/science.aaa0940
Electric vehicles are touted as environmentally friendly, but they actually pollute more than conventional vehicles during manufacturing. However, a new report argues that, because electric vehicles are cooler, they can reduce heat and temperature increases in urban environments, leading to a net reduction in greenhouse gas emissions.... Read more »
Li C, Cao Y, Zhang M, Wang J, Liu J, Shi H, & Geng Y. (2015) Hidden benefits of electric vehicles for addressing climate change. Scientific reports, 9213. PMID: 25790439
Travel to the Amazon and flick an ant off a leaf, and you might be surprised what you see. Certain rainforest ant species can control their falls and glide back onto the trunks of the trees they came from. Unlike Superman, though, they're only flying to rescue themselves.
An ant is light enough that a drop to the forest floor might not hurt it. But the other animals cruising the ground for snacks will cause trouble for that ant soon enough. That's why many rainforest ants have evolved to ... Read more »
Munk Y, Yanoviak SP, Koehl MA, & Dudley R. (2015) The descent of ant: field-measured performance of gliding ants. The Journal of experimental biology. PMID: 25788722
A-Heusler there matey Heusler materials are becoming increasingly interesting for use in spintronics. These materials have X2YZ stoichiometry (where Y is a magnetic ion) and...
The post Heusler alloys: A hot topic appeared first on Spin and Tonic.
... Read more »
Kento Yamasaki1, Soichiro Oki1, Shinya Yamada1, Takeshi Kanashima1, and Kohei Hamaya1. (2015) Spin-related thermoelectric conversion in lateral spin-valve devices with single-crystalline Co2FeSi electrodes . Applied Physics Express, 43003. info:/
I can’t stand it when I get dust in my eye. Can you imagine having a neural implant in your eye? Star Trek’s Geordi LaForge had implanted electrodes that, along with his visor, let him see. Visual neural prostheses are no longer a thing of science fiction, making the blind see is science fact. The only difference is that he saw in all wavelengths of the electromagnetic spectrum. But there’s no reason we can’t do that as well. ... Read more »
Wang, J., Wu, X., Lu, Y., Wu, H., Kan, H., & Chai, X. (2014) Face recognition in simulated prosthetic vision: face detection-based image processing strategies. Journal of Neural Engineering, 11(4), 46009. DOI: 10.1088/1741-2560/11/4/046009
Nirenberg, S., & Pandarinath, C. (2012) Retinal prosthetic strategy with the capacity to restore normal vision. Proceedings of the National Academy of Sciences, 109(37), 15012-15017. DOI: 10.1073/pnas.1207035109
Stingl, K., Bartz-Schmidt, K., Gekeler, F., Kusnyerik, A., Sachs, H., & Zrenner, E. (2013) Functional Outcome in Subretinal Electronic Implants Depends on Foveal Eccentricity. Investigative Ophthalmology , 54(12), 7658-7665. DOI: 10.1167/iovs.13-12835
I am back after the announcement by CERN of the restart of LHC. On May this year we will have also the first collisions. This is great news and we hope for the best and the best here is just the breaking of the Standard Model. The Higgs in the title is not Professor Higgs […]... Read more »
Marco Frasca. (2009) Exact solutions of classical scalar field equations. J.Nonlin.Math.Phys.18:291-297,2011. arXiv: 0907.4053v2
Marco Frasca. (2013) Scalar field theory in the strong self-interaction limit. Eur. Phys. J. C (2014) 74:2929. arXiv: 1306.6530v5
SUMMARY: To meet humanity’s growing energy demands, scientists are taking lessons from plants, which perfected the process of capturing the sun’s rays and transforming that into starch. Might scientists be able to adapt the photosynthetic process pioneered by plants and adapt it to meet human demands? ... Read more »
Porter G. (1950) Flash Photolysis and Spectroscopy. A New Method for the Study of Free Radical Reactions. Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 200(1061), 284-300. DOI: http://dx.doi.org/10.1098/rspa.1950.0018
Porter G. (1966) Studies of Triplet Chlorophyll by Microbeam Flash Photolysis. Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 295(1440), 1-12. DOI: http://dx.doi.org/10.1098/rspa.1966.0222
Porter G. (1978) The Bakerian Lecture, 1977: In Vitro Models for Photosynthesis. Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 362(1710), 281-303. DOI: http://dx.doi.org/10.1098/rspa.1978.0134
Tyndall J. (1861) The Bakerian Lecture: On the Absorption and Radiation of Heat by Gases and Vapours, and on the Physical Connexion of Radiation, Absorption, and Conduction. Philosophical Transactions of the Royal Society of London, 1-36. DOI: http://dx.doi.org/10.1098/rstl.1861.0001
Cogdell R. J., P. I. Molina, & L. Cronin. (2013) The use and misuse of photosynthesis in the quest for novel methods to harness solar energy to make fuel. Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 371(1996), 20110603-20110603. DOI: http://dx.doi.org/10.1098/rsta.2011.0603
As touched upon in last week’s Pick of the Week, perpendicular magnetic anisotropy (PMA) may be important for spin transfer torque MRAM (STT-MRAM) as it...
The post Interface time: Finding the source of perpendicular magnetic anisotropy appeared first on Spin and Tonic.
... Read more »
Kim, M., Kim, S., Ko, J., & Hong, J. (2015) Contribution of individual interfaces in the MgO/Co/Pd trilayer to perpendicular magnetic anisotropy upon annealing. Applied Physics Letters, 106(10), 102404. DOI: 10.1063/1.4914497
Tractor beams pulling space ships are things of science fiction, but tractor beams pulling small objects on Earth are science fact. Beams usually push things away with their force, but we have learned to manipulate them so that they push things back to the source – we can do it with water, sound and even laser light.... Read more »
Shvedov, V., Davoyan, A., Hnatovsky, C., Engheta, N., & Krolikowski, W. (2014) A long-range polarization-controlled optical tractor beam. Nature Photonics, 8(11), 846-850. DOI: 10.1038/nphoton.2014.242
Mo Li, W. H. P. Pernice, & H. X. Tang. (2009) Tunable bipolar optical interactions between guided lightwaves. Nature Photonics. arXiv: 0903.5117v1
Punzmann, H., Francois, N., Xia, H., Falkovich, G., & Shats, M. (2014) Generation and reversal of surface flows by propagating waves. Nature Physics, 10(9), 658-663. DOI: 10.1038/nphys3041
Ruffner DB, & Grier DG. (2012) Optical conveyors: a class of active tractor beams. Physical review letters, 109(16), 163903. PMID: 23215079
The Hall Effect is beloved of condensed matter physicists the world over for its use in characterisation of materials and sensing of magnetic fields. Now...
The post Hall Effect of Fame appeared first on Spin and Tonic.
... Read more »
Hall E. H. (1879) On a New Action of the Magnet on Electric Currents. American Journal of Mathematics, 2(3), 287. DOI: http://dx.doi.org/10.2307/2369245
Convergent cross-mapping analysis finds 'modest causal effect' of cosmic rays on global temperatures over short timescales, but rules out effect on long-term global warming.... Read more »
Tsonis, A., Deyle, E., May, R., Sugihara, G., Swanson, K., Verbeten, J., & Wang, G. (2015) Dynamical evidence for causality between galactic cosmic rays and interannual variation in global temperature. Proceedings of the National Academy of Sciences, 201420291. DOI: 10.1073/pnas.1420291112
After a month long absence, Pick of the Week returns with a look at a fantastic commentary article on spin-transfer torque magnetoresistive random access memory...
The post MRAM catches an STT appeared first on Spin and Tonic.
... Read more »
Can we make a Star Trek phaser? In a classic example of life imitating art, the militaries of many countries are actively pursuing such directed energy weapons. So far, we’ve developed high-energy lasers and masers, particle beams, and something that looks a lot like an aimed lightning bolt. But our versions are huge, what must be overcome to make hand-held versions?... Read more »
Shao, L., Cline, D., Ding, X., Ho, Y., Kong, Q., Xu, J., Pogorelsky, I., Yakimenko, V., & Kusche, K. (2013) Simulation prediction and experiment setup of vacuum laser acceleration at Brookhaven National Lab-Accelerator Test Facility. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 25-29. DOI: 10.1016/j.nima.2012.09.053
Bartal, T., Foord, M., Bellei, C., Key, M., Flippo, K., Gaillard, S., Offermann, D., Patel, P., Jarrott, L., Higginson, D.... (2011) Focusing of short-pulse high-intensity laser-accelerated proton beams. Nature Physics, 8(2), 139-142. DOI: 10.1038/nphys2153
Peralta, E., Soong, K., England, R., Colby, E., Wu, Z., Montazeri, B., McGuinness, C., McNeur, J., Leedle, K., Walz, D.... (2013) Demonstration of electron acceleration in a laser-driven dielectric microstructure. Nature, 503(7474), 91-94. DOI: 10.1038/nature12664
R.D. Curry. (2012) Investigation of a toroidal air plasma under atmospheric conditions . Plasma Science (ICOPS), 2. DOI: 10.1109/PLASMA.2012.6383564
Transformer Hum Whether you realise it or not you have probably already encountered magnetostriction at some point in your life. The characteristic ‘transformer hum‘ is...
The post Take the Strain – Joule Magnetostriction appeared first on Spin and Tonic.
... Read more »
Joule J.P. (1847) XVII. On the effects of magnetism upon the dimensions of iron and steel bars . Philosophical Magazine Series 3, 30(199), 76-87. DOI: http://dx.doi.org/10.1080/14786444708645656
Roy Kuntal, & Jayasimha Atulasimha. (2011) Hybrid spintronics and straintronics: A magnetic technology for ultra low energy computing and signal processing. Applied Physics Letters, 99(6), 63108. DOI: http://dx.doi.org/10.1063/1.3624900
Few of us will be surprised to hear that the academic job market is hugely competitive. What is surprising is how this paper uses techniques...
The post How Reproductive is Your Professor? appeared first on Spin and Tonic.
... Read more »
Larson Richard C., & Yi Xue. (2013) Too Many PhD Graduates or Too Few Academic Job Openings: The Basic Reproductive Number R 0 in Academia . Systems Research and Behavioral Science, 31(6), 745-750. DOI: http://dx.doi.org/10.1002/sres.2210
Is it possible to hide in plain sight? Star Trek had cloaking devices, and Harry Potter and Frodo Baggins had their magic cloaks. In real life, we can make things disappear too. Cloaking devices are quickly becoming reality, and we bend light to make them work.... Read more »
Soric, J., Chen, P., Kerkhoff, A., Rainwater, D., Melin, K., & Alù, A. (2013) Demonstration of an ultralow profile cloak for scattering suppression of a finite-length rod in free space. New Journal of Physics, 15(3), 33037. DOI: 10.1088/1367-2630/15/3/033037
Maxwell’s Equations Maxwell’s equations, just like spintronics itself, involve understanding and combining electricity and magnetism. Unsurprisingly then, Maxwell’s equations come up in spintronics research time...
The post Maxwell’s Equations – Let There Be Light! appeared first on Spin and Tonic.
... Read more »
Droughts have been severe in California and surrounding states, but will they be any worse than previous droughts in Earth's history? A combination of climate models and tree ring analysis provides an answer.... Read more »
Benjamin I. Cook, Toby R. Ault, Jason E. Smerdon. (2015) Unprecedented 21st century drought risk in the American Southwest and Central Plains. Science Advances. info:/
How sure is the future of spintronics? In field of spintronics, we can often be very sure of ourselves about what role we play in...
The post What Place for Spintronics in the Future of Computing? appeared first on Spin and Tonic.
... Read more »
Do you write about peer-reviewed research in your blog? Use ResearchBlogging.org to make it easy for your readers — and others from around the world — to find your serious posts about academic research.
If you don't have a blog, you can still use our site to learn about fascinating developments in cutting-edge research from around the world.
Research Blogging is powered by SMG Technology.
To learn more, visit seedmediagroup.com.