Passive, lossy materials with positive index at real frequencies can be used to realize optical antimatter under complex frequency excitation. Our approach enables arbitrary complex \(\epsilon ,\,\mu\ ...

Executive Editor David Carnoy has been a leading member of CNET's Reviews team since 2000. He covers the gamut of gadgets and is a notable reviewer of mobile accessories and portable audio products, ...

Optical spectroscopy encompasses a wide variety of techniques used to study how matter interacts with light. Optical spectroscopy techniques are used in physics, astronomy, chemistry, biology, and ...

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