When you shell out for artisanal food—Swiss Gruyère cheese, organic vanilla extract, Italian prosciutto—do you get what you paid for? With global food fraud estimates as high as $40 billion a year, it's a question Purdue ...
Molecular & Computational biology
Aug 2, 2023
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1
Since ancient times, gemstones have been mined and traded across the globe, sometimes traveling continents from their origin. Gems are geologically defined as minerals celebrated for beauty, strength, and rarity. Their unique ...
Analytical Chemistry
Aug 1, 2023
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32
The research group of Yang Liangbao at the Institute of Health and Medical Technology, Hefei Institutes of Physical Science (HFIPS), Chinese Academy of Science (CAS) has recently developed a surface-enhanced Raman spectroscopy ...
Nanomaterials
Jul 28, 2023
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4
Ultrafast extreme ultraviolet (XUV) spectroscopy is a powerful technique for probing the dynamics of atoms and molecules with attosecond time resolution. However, conventional XUV absorption measurements only provide information ...
Optics & Photonics
Jul 26, 2023
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1
Raman spectroscopy—a chemical analysis method that shines monochromatic light onto a sample and records the scattered light that emerges—has caused frustration among biomedical researchers for more than half a century. ...
Optics & Photonics
Jul 26, 2023
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55
Graphene is a two-dimensional wonder material that has been suggested for a wide range of applications in energy, technology, construction, and more since it was first isolated from graphite in 2004.
Nanophysics
Jul 25, 2023
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50
The light control performance of photonic crystals is closely related to their lattice constant, which typically requires the lattice constant to be in the same order of magnitude as the working wavelength. In crystal materials, ...
Nanophysics
Jul 24, 2023
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1
Plastic waste is a problem on our beaches. Hence, it is largely removed in a coordinated manner within a few weeks. However, it can litter other coasts of the world for many months to years due to unregulated waste disposal. ...
Earth Sciences
Jul 20, 2023
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101
For the first time, the James Webb Space Telescope has observed the chemical signature of carbon-rich dust grains in the early universe.
Astronomy
Jul 19, 2023
17
163
In the late 1950s and 1960s, more than 12,000 malformed babies with short arms and legs were born as a side effect of thalidomide, a drug sold to pregnant women to prevent morning sickness. The tragedy was caused by the drug's ...
Biochemistry
Jul 19, 2023
0
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