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In a first, LLNL researchers create birefringent all-glass metasurface

Lawrence Livermore National Laboratory researchers have adapted their novel metasurface process to create an all-glass metasurface with birefringence, or dual refraction, properties. Learn how this achievement could transform waveplate technology for high-power laser systems such as the National Ignition Facility:


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Chronic Pain And Digital Care: A Fresh Approach For Employers

With the opioid epidemic getting worse, it’s time for employers to recognize that the problem is far from distant—it’s impacting everyone, including their workforce. Costly treatment and disengaged employees are only a few of the ways opioid addictions may be impacting a company’s bottom line and culture. No one solution will fix the opioid epidemic, but digital care can be an easily accessible starting point. By adopting a digital solution, employers can provide their employees with the proper treatment they deserve, while maintaining a positive, healthy culture where employees can thrive.

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Ammonium chloride tastes like nothing else. It may be the sixth basic taste

Scientists have just caught up with something that Scandinavians have suspected strongly for over a century: Ammonium chloride (NH4Cl) may be a basic taste, joining sweet, salty, sour, bitter, and umami.

Denizens of Finland, Norway, Denmark, Sweden, and the Netherlands gobble up the compound in “salmiak,” a salt licorice candy. But don’t be fooled by the “candy” label. As Andrew Richdale wrote for Saveur back in 2017, salmiak tastes nothing like any other candy you have ever tried.

“The first time I sampled salmiak… I spit it out on a Copenhagen street corner. It wasn’t that this powerful little pastille was bad. It’s just that my taste buds had never quite been lit up that way: smacked with a layer of sharp and sour salt dust, then soothed by something bitter and caramel-sweet. It felt simultaneously fascinating and… abusive? Or at least odd, like a knocked funny bone.”

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