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  • August 23, 2016
  • 12:11 AM
  • 902 views

Measuring altitude — with clocks?

by Jens Wilkinson in It Ain't Magic

Measuring altitude using atomic clocks seems like a crazy idea, but it’s already being done at RIKEN in Japan.... Read more »

Takano, T., Takamoto, M., Ushijima, I., Ohmae, N., Akatsuka, T., Yamaguchi, A., Kuroishi, Y., Munekane, H., Miyahara, B., & Katori, H. (2016) Geopotential measurements with synchronously linked optical lattice clocks. Nature Photonics. DOI: 10.1038/nphoton.2016.159  

  • June 12, 2016
  • 11:35 PM
  • 1,059 views

Seeing Through the Skin

by Aurametrix team in Olfactics and Diagnostics

​Human skin emits light (albeit the glow is extremely weak) and a wide variety of small molecules that may be sometimes "sniffed" by dogs or even other humans. These chemicals tell a story about our health and wellness, things we eat and drink, touch and breathe. Mosquitoes use such emissions to assess our "attractiveness" from indicators such as Indoles (unpleasantly smelling but healthy "inner soil" biomarker) or carbon dioxide (amount of which correlates with the size of the person........ Read more »

Gao W, Emaminejad S, Nyein HY, Challa S, Chen K, Peck A, Fahad HM, Ota H, Shiraki H, Kiriya D.... (2016) Fully integrated wearable sensor arrays for multiplexed in situ perspiration analysis. Nature, 529(7587), 509-14. PMID: 26819044  

Yokota T, Zalar P, Kaltenbrunner M, Jinno H, Matsuhisa N, Kitanosako H, Tachibana Y, Yukita W, Koizumi M, & Someya T. (2016) Ultraflexible organic photonic skin. Science advances, 2(4). PMID: 27152354  

  • November 21, 2015
  • 11:40 AM
  • 967 views

Where Are All the Wearables We Want to Wear?

by Aurametrix team in Health Technologies

Millions of years ago our ancestors straightened up and started carrying tools around, instead of dropping them after use. And so technology became a part of daily routine.​As time passed, more useful tools were made than it was feasible to carry or wear over the shoulder. One solution to this problem was monetary exchange, the other was a better technology. Wearables promised to add more convenience than carryables and, ever since humans started to wear clothes some 170,000 years ag........ Read more »

Bouzouggar A, Barton N, Vanhaeren M, d'Errico F, Collcutt S, Higham T, Hodge E, Parfitt S, Rhodes E, Schwenninger JL.... (2007) 82,000-year-old shell beads from North Africa and implications for the origins of modern human behavior. Proceedings of the National Academy of Sciences of the United States of America, 104(24), 9964-9. PMID: 17548808  

Sungmee Park, & Jayaraman S. (2014) A transdisciplinary approach to wearables, big data and quality of life. Conference proceedings : .. Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference, 4155-8. PMID: 25570907  

  • April 22, 2015
  • 01:29 PM
  • 1,095 views

Microwave goodbye to inefficient spintronic microwave detectors

by Bryn Howells in Spin and Tonic

Magnetic tunnel junctions (MTJs) which comprise of a free magnetic layer (whose magnetization orientation can be manipulated) and a fixed magnetic layer (whose magnetization is...
The post Microwave goodbye to inefficient spintronic microwave detectors appeared first on Spin and Tonic.
... Read more »

  • April 8, 2015
  • 04:48 PM
  • 1,004 views

The heat is magnon at magnetic/non-magnetic interfaces

by Bryn Howells in Spin and Tonic

A magnon is a quantised spin wave, i.e. a collective excitation of the spin angular momentum that is associated with electrons in a crystal structure. ...
The post The heat is magnon at magnetic/non-magnetic interfaces appeared first on Spin and Tonic.
... Read more »

Scott A. Bender and Yaroslav Tserkovnyak. (2015) Interfacial spin and heat transfer between metals and magnetic insulators. Physical Review B, 140402. info:/

  • April 7, 2015
  • 09:00 AM
  • 1,832 views

Star Trek Shields For Tanks

by Mark E. Lasbury in The 'Scope

Star Trek deflectors absorbed or deflected energy beams, but would they work against bullets or asteroids? Scientists are on working on armors and plasma systems that can stop projectiles. In some cases we use explosions to stop explosions. In others, tanks are turned into electrical pulse generators that zap incoming rockets. But the most amazing is the wall of exploding plasma that will be the first true defensive energy shield.... Read more »

Mayseless, M. (2011) Effectiveness of Explosive Reactive Armor. Journal of Applied Mechanics, 78(5), 51006. DOI: 10.1115/1.4004398  

Yoo, Y., Zheng, H., Kim, Y., Rhee, J., Kang, J., Kim, K., Cheong, H., Kim, Y., & Lee, Y. (2014) Flexible and elastic metamaterial absorber for low frequency, based on small-size unit cell. Applied Physics Letters, 105(4), 41902. DOI: 10.1063/1.4885095  

  • April 1, 2015
  • 07:36 PM
  • 1,024 views

Drifting towards spintronic polarimeters

by Bryn Howells in Spin and Tonic

In electronics, a drift current is one where the motion of charge carriers is dictated by an applied electric field. In contrast, a diffusive current...
The post Drifting towards spintronic polarimeters appeared first on Spin and Tonic.
... Read more »

Nádvorník, L., Haigh, J., Olejník, K., Irvine, A., Novák, V., Jungwirth, T., & Wunderlich, J. (2015) Efficient conversion of light to charge and spin in Hall-bar microdevices. Physical Review B, 91(12). DOI: 10.1103/PhysRevB.91.125205  

  • March 19, 2015
  • 12:39 PM
  • 984 views

Heusler alloys: A hot topic

by Bryn Howells in Spin and Tonic

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:/

  • March 12, 2015
  • 12:55 PM
  • 1,107 views

Interface time: Finding the source of perpendicular magnetic anisotropy

by Bryn Howells in Spin and Tonic

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 »

  • March 6, 2015
  • 12:27 PM
  • 979 views

MRAM catches an STT

by Bryn Howells in Spin and Tonic

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 »

Kent, A., & Worledge, D. (2015) A new spin on magnetic memories. Nature Nanotechnology, 10(3), 187-191. DOI: 10.1038/nnano.2015.24  

  • March 3, 2015
  • 09:00 AM
  • 1,708 views

Star Trek Phasers, Coming To Us Sooner or Laser

by Mark E. Lasbury in The 'Scope

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  

Oxborrow, M., Breeze, J., & Alford, N. (2012) Room-temperature solid-state maser. Nature, 488(7411), 353-356. DOI: 10.1038/nature11339  

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  

  • February 24, 2015
  • 09:00 AM
  • 1,506 views

Seeing Our Way to Invisibility

by Mark E. Lasbury in The 'Scope

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 »

Choi, J., & Howell, J. (2014) Paraxial ray optics cloaking. Optics Express, 22(24), 29465. DOI: 10.1364/OE.22.029465  

Fan, P., Chettiar, U., Cao, L., Afshinmanesh, F., Engheta, N., & Brongersma, M. (2012) An invisible metal–semiconductor photodetector. Nature Photonics, 6(6), 380-385. DOI: 10.1038/nphoton.2012.108  

  • February 1, 2015
  • 11:02 AM
  • 1,041 views

FeRh: Making the transition to a well-understood potential spintronic material

by Bryn Howells in Spin and Tonic

FeRh is a metallic alloy that has been well investigated over the past 70 years or so, yet a thorough understanding of some of its...
The post FeRh: Making the transition to a well-understood potential spintronic material appeared first on Spin and Tonic.
... Read more »

  • January 22, 2015
  • 02:58 PM
  • 964 views

Magnetic domains get a DUI for driving under the influence of DMI

by Bryn Howells in Spin and Tonic

This Week’s Pick of the Past article took a retrospective look at the excitement that magnetic bubble memory caused in the 1970s.  The basic principle...
The post Magnetic domains get a DUI for driving under the influence of DMI appeared first on Spin and Tonic.
... Read more »

  • January 20, 2015
  • 08:00 AM
  • 1,131 views

The Electrical Grid Needs Fattening Up

by Mark E. Lasbury in The 'Scope

Make hay while the sun shines is the great lesson from renewable energy. Solar and wind have to be harvested when they occur, or they are lost forever. But how do you store that energy if the national grid doesn’t need it at that moment? Large-scale energy storage is the wave of the future – including pumping air or hydrogen gas into abandoned mines or running the national grid from all our electric cars.... Read more »

F. K. Tuffner, Member, IEEE, and M. Kintner-Meyer, Member, IEEE. (2011) Using Electric Vehicles to Mitigate Imbalance Requirements Associated with an Increased Penetration of Wind Generation. Power and Energy Society General Meeting, 2011 IEEE , 1-8. info:/

  • January 14, 2015
  • 04:30 PM
  • 1,012 views

Spin current affairs: Opening the magnetic gate

by Bryn Howells in Spin and Tonic

Since the discovery of the spin Hall magnetoresistance (SMR) effect in 2013, there has been much discussion about the relative roles of the ferromagnetic insulator...
The post Spin current affairs: Opening the magnetic gate appeared first on Spin and Tonic.
... Read more »

Estitxu Villamor, Miren Isasa, Saul V ¨ elez, Amilcar Bedoya-Pinto, Paolo Vavassori, Luis E. Hueso,. (2015) Modulation of pure spin currents with a ferromagnetic insulator. Phys Rev B, 20403. info:/

  • January 6, 2015
  • 09:00 AM
  • 1,407 views

What It Takes To Kill A Watt

by Mark E. Lasbury in The 'Scope

Do you have any idea where your home's electricity comes from? Sure, people have all heard of solar power, wind power, and fossil fuels, but they know very little about how electricity is most often generated. Is fossil fuel the most important natural resource for electricity production – nope, it’s water.... Read more »

  • September 17, 2014
  • 09:05 AM
  • 1,192 views

Should I Stay Or Should I Go

by Mark Lasbury in As Many Exceptions As Rules

Bacteria can swarm to conquer new territory or settle into structured biofilms, not unlike tribes that are nomadic versus those that build cities. New research indicates has shed light on the mechanics of swarming and biofilm production, including the function of extracellular DNA and secreted polysaccharides. Both biofilms and swarming depend on quorum sensing, and several new papers have identified chemicals that can interrupt quorum sensing in pathogenic bacteria and therefore prevent disease........ Read more »

Gloag ES, Turnbull L, Huang A, Vallotton P, Wang H, Nolan LM, Mililli L, Hunt C, Lu J, Osvath SR.... (2013) Self-organization of bacterial biofilms is facilitated by extracellular DNA. Proceedings of the National Academy of Sciences of the United States of America, 110(28), 11541-6. PMID: 23798445  

Alteri CJ, Himpsl SD, Pickens SR, Lindner JR, Zora JS, Miller JE, Arno PD, Straight SW, & Mobley HL. (2013) Multicellular bacteria deploy the type VI secretion system to preemptively strike neighboring cells. PLoS pathogens, 9(9). PMID: 24039579  

  • August 20, 2014
  • 07:18 AM
  • 911 views

Topological Insulators Could Power Memory Devices

by dailyfusion in The Daily Fusion

A new phase of matter known as topological insulators, until recently known only for esoteric quantum-mechanical properties, might have a practical use in controlling magnetic memory and logic devices. ... Read more »

Mellnik, A., Lee, J., Richardella, A., Grab, J., Mintun, P., Fischer, M., Vaezi, A., Manchon, A., Kim, E., Samarth, N.... (2014) Spin-transfer torque generated by a topological insulator. Nature, 511(7510), 449-451. DOI: 10.1038/nature13534  

  • March 12, 2014
  • 01:34 PM
  • 903 views

Scientists Create Thinnest LED Ever

by dailyfusion in The Daily Fusion

University of Washington scientists have built the thinnest LED ever. It can be used as a source of light energy in electronics. The LED is based off of two-dimensional, flexible semiconductors, making it possible to stack or use in much smaller and more diverse applications than current technology allows.... Read more »

Ross, J., Klement, P., Jones, A., Ghimire, N., Yan, J., Mandrus, D., Taniguchi, T., Watanabe, K., Kitamura, K., Yao, W.... (2014) Electrically tunable excitonic light-emitting diodes based on monolayer WSe2 p–n junctions. Nature Nanotechnology. DOI: 10.1038/nnano.2014.26  

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