Physics

INTERVIEW

Vanderlei Bagnato: “This isn’t a case of brain drain”

Currently on leave from USP, physicist Vanderlei Bagnato has spent most of his time in Texas, where he is working to set up a biophotonics laboratory modeled after the center he heads in São Paulo

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New materials

Ultra-thin lenses for cell phones, microscopes, and telescopes

Silicon films can combine a wide field of vision with high digital resolution, although achieving high-quality multi-color images remains a hurdle

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OBITUARY

Synchrotron light pioneer

Argentine physicist Aldo Craievich played a major role in establishing a community of synchrotron light source users in Brazil and paved the way for glass research

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ASTROPHYSICS

Dense, compact star could be made of strange matter

With 80% of the mass of the Sun and a radius of 10.4 kilometers, the object could be made up of free quarks

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Astronomy

Origin of the high temperature of the solar corona

Satellites help shed light on why the Sun's corona is so much hotter than its surface

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History

Medieval monks observed blood-red moons

Texts and paintings by medieval monks help accurately date major volcanic eruptions

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BIODIVERSITY

Preserving the harvest

Brazil contributed with five samples of sweet potato, four of rice, two of potato, and two of millet

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ASTROPHYSICS

Super telescope gets a funding boost

Giant Magellan Telescope to receive US$205 million in fresh investment, including US$5 million from FAPESP

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Flora

The sounds of wounded plants

Experiment shows that plants subjected to stress can emit ultrasonic sounds

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RESEARCH ITINERARIES

From physics to the environment

Marco Aurélio Nalon talks about the use of data geoprocessing to map native vegetation in the state of São Paulo

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Retrospect

The bridge-building physicist

Jean Meyer showed that alternative energy science could be a driving force in Brazilian development

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Physics

Method determines whether two particles of light are entangled based on measurements of only one of them

The approach was conceived by a Brazilian scientist working with the winner of the 2022 Nobel Prize in Physics

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Technology

Sensor detects fungicide

Electrochemical sensor made of kraft paper connected to an electronic device can detect prohibited fungicide within minutes

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Astrophysics

Brazilian astronomers find “misplaced” ring around an object distant from the Solar System

A distant circular structure is found revolving Quaoar, an icy body located in the Kuiper belt

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Interview

Cid Bartolomeu de Araújo: The adventures of light

Physicist from Pernambuco explains phenomena that can be used to improve optical fibers, cell phones, new materials, and lasers

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Physics

Laser beam deflects lightning in the Swiss Alps

Scientists have managed to deflect lightning for the first time using short, intense laser pulses

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Geophysics

The ice of distant moons

Earth's inner core appears to be slowing down, which could cause subtle changes in the magnetic field that protects the planet

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Geophysics

Earth’s core slowing down

Earth's inner core appears to be slowing down, which could cause subtle changes in the magnetic field that protects the planet

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Astronomy

Gamma-ray bursts hint at the existence of a new type of neutron star

A study led by a Brazilian scientist suggests that these celestial objects last less than 1 second and have a 20% greater mass than observed

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Physics

Nuclear fusion experiment produces more energy than it consumes for the first time

The result achieved in the USA is a milestone, but there is still a long way to go to master the technology

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Physics

There are about 90 nuclear fusion reactors operating worldwide

Three small experimental machines are located in Brazil

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Biochemistry

New biocatalyst may be more efficient at breaking down the water molecule

USP researchers shed light on reaction fundamental to hydrogen fuel production

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Physics

Dark matter could produce antimatter capable of crossing the Milky Way

Experiment carried out at the LHC particle accelerator indicates that half of the antiparticles generated in this way reach the vicinity of Earth

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Astrophysics

Data from James Webb Telescope used to reconstruct formation of planetary nebula

Images suggest the celestial object originated from an interaction involving at least four stars

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INTERVIEW

Michel Spiro: Basic sciences for sustainability

The French physicist shows how curiosity-based research can help in the efforts to achieve Sustainable Development Goals

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OBITUARY

Research as a passion and a mission

Herch Moysés Nussenzveig, a scholar of optical phenomena such as the rainbow, defender of science, and physics education enthusiast, died in November, at the age of 90

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Physics

Exotic phase of matter could be useful in the development of quantum computers

Magnetic compound in a state known as spin liquid appears to be more stable than previously thought

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INTERVIEW

Yvonne Primerano Mascarenhas: Thinking never hurt anyone

Mascarenhas, 91, talks about her academic career and her work advocating science and education

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Astronomy

The first step toward returning to the Moon

Rocket took off from the US in November, launching the Orion spacecraft on a trip around the Moon

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Astrophysics

A black hole in Earth’s backyard

Black hole with a mass equivalent to 10 Suns discovered near Earth

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