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Mirror-image crystals reverse the direction of light-driven currents
المصدر: Phys.org - latest science and technology news stories · نُشر
The circular photogalvanic effect (CPGE), a phenomenon that generates helicity-dependent photocurrents in noncentrosymmetric materials, can originate purely from a crystal's internal structure without a contribution from the surface, a study from Science Tokyo reveals.
The circular photogalvanic effect (CPGE), a phenomenon that generates helicity-dependent photocurrents in noncentrosymmetric materials, can originate purely from a crystal's internal structure without a contribution from the surface, a study from Science Tokyo reveals.
أخبار ذات صلة
Germany's political center fights for relevance after far-right and far-left gains
Centrist politicians are soul-searching after electoral gains by the far right and the far left. Today's weak coalitions, political fragmentation and dire economy echo a past that led to the rise of fascism. (Image credit: JENS SCHLUETER)
NPR Topics: World ·
Cornell rape case gets special prosecutor. And, Renee Good's family sues the government
New legal action in two closely watched cases: one at Cornell, the other over Renee Good's death. We take a closer look. (Image credit: Michael M. Santiago)
NPR Topics: World ·
Pro-democracy activists increasingly vulnerable to authoritarian governments in Southeast Asia
Activists across Asia are being hunted down by authoritarian governments even across international borders. Human rights groups have been warning of a "swap market" of repression in Southeast Asia. (Image credit: AMAURY PAUL)
NPR Topics: World ·
Passengers recount chaos on Tel Aviv flight. And, FBI probes employee-data hack
What we know so far about the tense moments aboard a Tel Aviv-bound flight. And, the FBI investigates a cyberattack involving sensitive employee data. (Image credit: Erik Marmor)
NPR Topics: World ·
Picanha, prices and politics: What Brazil's favorite steak says about the election
President Lula promised Brazilians four years ago they'd be able to afford picanha again. Now, as he seeks another term, the price of the country's favorite cut of beef is telling a different story. (Image credit: Eraldo Peres)
NPR Topics: World ·