EGYPTIAN-AMERICAN : Freeze-frame: U of A researchers led by Physicist Prof. Mohammed Hassan develop World’s Fastest Microscope that can see electrons in motion

Imagine owning a camera so powerful it can take freeze-frame photographs of a moving electron – an object traveling so fast it could circle the Earth many times in a matter of a second. Researchers at the University of Arizona have developed the world’s fastest electron microscope that can do just that.

They believe their work will lead to groundbreaking advancements in physics, chemistry, bioengineering, materials sciences and more.

“When you get the latest version of a smartphone, it comes with a better camera,” said Mohammed Hassan, associate professor of physics and optical sciences. “This transmission electron microscope is like a very powerful camera in the latest version of smart phones; it allows us to take pictures of things we were not able to see before – like electrons. With this microscope, we hope the scientific community can understand the quantum physics behind how an electron behaves and how an electron moves.”

Hassan led a team of researchers in the departments of physics and optical sciences that published the research article “Attosecond electron microscopy and diffraction” in the Science Advances journal. Hassan worked alongside Nikolay Golubev, assistant professor of physics; Dandan Hui, co-lead author and former research associate in optics and physics who now works at the Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences; Husain Alqattan, co-lead author, U of A alumnus and assistant professor of physics at Kuwait University; and Mohamed Sennary, a graduate student studying optics and physics.

A transmission electron microscope is a tool used by scientists and researchers to magnify objects up to millions of times their actual size in order to see details too small for a traditional light microscope to detect. Instead of using visible light, a transmission electron microscope directs beams of electrons through whatever sample is being studied. The interaction between the electrons and the sample is captured by lenses and detected by a camera sensor in order to generate detailed images of the sample.

Ultrafast electron microscopes using these principles were first developed in the 2000’s and use a laser to generate pulsed beams of electrons. This technique greatly increases a microscope’s temporal resolution – its ability to measure and observe changes in a sample over time. In these ultrafast microscopes, instead of relying on the speed of a camera’s shutter to dictate image quality, the resolution of a transmission electron microscope is determined by the duration of electron pulses.

The faster the pulse, the better the image.

Ultrafast electron microscopes previously operated by emitting a train of electron pulses at speeds of a few attoseconds. An attosecond is one quintillionth of a second. Pulses at these speeds create a series of images, like frames in a movie – but scientists were still missing the reactions and changes in an electron that takes place in between those frames as it evolves in real time. In order to see an electron frozen in place, U of A researchers, for the first time, generated a single attosecond electron pulse, which is as fast as electrons moves, thereby enhancing the microscope’s temporal resolution, like a high-speed camera capturing movements that would otherwise be invisible.

Hassan and his colleagues based their work on the Nobel Prize-winning accomplishments of Pierre Agostini, Ferenc Krausz and Anne L’Huilliere, who won the Novel Prize in Physics in 2023 after generating the first extreme ultraviolet radiation pulse so short it could be measured in attoseconds.

Using that work as a steppingstone, U of A researchers developed a microscope in which a powerful laser is split and converted into two parts – a very fast electron pulse and two ultra-short light pulses. The first light pulse, known as the pump pulse, feeds energy into a sample and causes electrons to move or undergo other rapid changes. The second light pulse, also called the “optical gating pulse” acts like a gate by creating a brief window of time in which the gated, single attosecond electron pulse is generated. The speed of the gating pulse therefore dictates the resolution of the image. By carefully synchronizing the two pulses, researchers control when the electron pulses probe the sample to observe ultrafast processes at the atomic level.

“The improvement of the temporal resolution inside of electron microscopes has been long anticipated and the focus of many research groups – because we all want to see the electron motion,” Hassan said. “These movements happen in attoseconds. But now, for the first time, we are able to attain attosecond temporal resolution with our electron transmission microscope – and we coined it ‘attomicroscopy.’ For the first time, we can see pieces of the electron in motion.”

source/content: eurekaalert.org / University of Arizona / (headline edited)

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Mohammed Hassan, associate professor of physics and optical sciences, let a group of researchers in developing the first transmission electron microscope powerful enough to capture images of electrons in motion.

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AMERICAN / EGYPTIAN

MOROCCO : Father of the Lithium Battery: Rachid Yazami Honored at International Forum

From a young Moroccan dreamer to a world-renowned inventor, Rachid Yazami’s pioneering spirit and lithium battery breakthrough have powered a global technological revolution.

Renowned Moroccan scientist and inventor Rachid Yazami was honored this week for his scientific achievements, particularly his pioneering work on lithium-ion batteries, at the International Government Communication Forum (IGCF 2024) held in Sharjah, United Arab Emirates.

The IGCF, held from September 4-5 under the theme “Agile Governments: Innovative Communication,” brought together over 250 speakers to discuss the key opportunities and challenges facing governments and populations in the 21st century.

Its wide range of panels discussed topics from information warfare and the talent-driven economy to the digital future and the impact of innovative communication on governments’ ability to achieve broad development goals.

In a statement to the Moroccan News Agency (MAP), Yazami described this tribute as a source of pride and honor for Morocco and a “recognition of my invention of the lithium battery that I made when I was 26 years old.”

A journey of scientific discovery

Yazami’s fascination with science began at a young age. “I actually had a strong interest in science from a very early age. A significant event happened in my life around age 11. One of my teachers pointed at me and declared, ‘Rachid, you will be a chemist!’” he recounted in an interview with VinFuture Prize.

This prediction came true when Yazami was admitted to the Grenoble Institute of Technology in France, where he received his engineering degree in 1978. Just a year later, at the age of 26, he made his groundbreaking discovery of the graphite anode, a key component in lithium-ion batteries.

“It was an absolutely unforgettable day in my life,” Yazami said of the moment he first successfully intercalated lithium into graphite, causing it to change color from black to gold. “It felt like alchemy, converting black to gold.”

The impact of the graphite anode

Yazami’s invention of the graphite anode has had a profound impact on the development and proliferation of lithium-ion batteries. “In 2019, 10 billion batteries were produced worldwide. Ninety-eight per cent used the anode. Every cell phone, electric car, storage has my anode,” he noted in an interview with The Register.

The global anode material market is predicted to grow to $10 billion by 2025, with the anode estimated to account for 10 to 15 percent of the total cost of a lithium-ion battery.

Despite the immense commercial success of his invention, Yazami lamented a missed opportunity for his home country.

“If this company in France said, ‘Oh, we think it may be improved, we have no evidence, but maybe it’s interesting, let’s file a patent that doesn’t cost as much money.’ I think it will have brought something between $100-150 billion. Only the invention of the graphite anode,” he said, referring to a French company that passed on the chance to patent his discovery in the early 1980s.

The future of battery technology

The future belongs to clean electrical energy, Yazami asserted in his speech during the opening session of the IGCF 2024, citing the progress made in lithium-ion batteries due to significant advances in the field.

These advancements include improved safety measures in high-temperature zones, reducing charging time to less than 20 minutes, increasing the range of electric vehicles, and extending battery life.

Yazami highlighted the growing demand for lithium-ion batteries in the international market, which is expected to reach a capacity of 4,700 GWh/h, worth more than four trillion dollars by 2030.

This latest prize comes as the Moroccan scientist continues to push the boundaries of battery technology. His company, KVI, recently developed a new fast-charging technology that can fully charge a high-density battery in just ten minutes, seven times faster than a Tesla.

“The target is to go to 300 [watt hours per kilogram]. To my knowledge there is no 300 watt hour per kilogram on the market — not yet. There are some prototypes, but when you increase the energy density there are some problems with life and safety of battery,” Yazami explained, highlighting the challenges and trade-offs in battery development.

Safety is also a major concern for Yazami. “We can’t prevent fire in extreme situations, but at least we can have signs before it happens,” he said, proposing the idea of a sensor that measures battery expansion due to heat and alerts the user well in advance of any potential issues.

Looking to the future, Yazami predicted the rise of electric airplanes for personal use within the next 20 to 30 years and a shift in battery manufacturing to Europe. “Currently the EV market is in the EU, and the manufacturing is in China,” he observed. “That’s a problem.”

source/content: moroccoworldnews.com (headline edited)

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Rachid Yazami, honored for pioneering lithium battery invention.

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MOROCCO

ALGERIA : M’Sila University Professors Among the Top Scientists Worldwide

This remarkable achievement underscores the university’s leadership in scientific research, affirming its pivotal role in Algeria’s innovation landscape and commitment to academic excellence. The recognition of these five esteemed scholars not only highlights their individual contributions but also elevates M’Sila University as a beacon of scientific advancement on the global stage.

Five distinguished professors from Mohamed Boudiaf University in M’Sila have earned recognition in the 2024 Stanford University ranking of the top 2% of scientists worldwide. This prestigious classification highlights their contributions to research and places them among a total of 68 Algerian researchers honored in this global assessment.

M’Sila University stands out as the leading Algerian institution, boasting the highest number of researchers included in this elite ranking. This achievement underscores the university’s commitment to advancing scientific research and fostering academic excellence, positioning it as a vital contributor to Algeria’s development and innovation landscape.

Professor Amar Boudellaa, the university director, emphasized the significance of this accomplishment as a reflection of the institution’s dedication to scientific inquiry. He affirmed the university’s ongoing support for researchers, inventors, and start-up founders, aligning with the vision outlined by the Minister of Higher Education.

The five notable researchers recognized in this ranking are:

Professor Bouarissa Nadir (Natural Sciences/Physics)

Professors Berri Saadi and Maireche Abdelmadjid (Faculty of Sciences)

Professor Chouder Aissa (Electrical Engineering, Faculty of Technology)

Hocini Abdesselam (Electronics, Faculty of Technology)

Since its inception in 1885, Stanford University has published the Top 2% Scientist ranking annually since 2020, based on comprehensive studies conducted by its researchers. This accolade not only celebrates individual achievements but also enhances the reputation of M’Sila University as a hub for scientific advancement in Algeria.

source/content: dzair.tube.dz (headline edited)

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ALGERIA

Essam Heggy – Space and Planetary Scientist at NASA

Dr Essam Heggy . Space and Planetary Scientist.

His main science interests in space and planetary geophysics covers Mars, the Moon, icy satellites and Near Earth Objects.

A member of the several NASA and ESA missions science teams including the MARSIS instrument aboard the Mars Express orbiter (2003-present), the Mini-SAR experiment aboard Chandrayaan-1, the Mini-RF experiment on board the Lunar Reconnaissance Orbiter (2008-present), the CONSERT radar experiment on board the Rosetta mission (2004-2015) and the RIME experiment Onboard JUICE mission for Jupiter Icy Satellites .

Heggy is the Principal Investigator of the NASA Earth Venture Mission Concept OASIS that aims to characterize groundwater in Hyper-Arid Environments .

Heggy served as a panel member for several NASA programs including the Planetary Instrument Definition and Development program, Planetary Geology and Geophysics program, Mars Data Analysis program, Astrobiology program and the Educational and Public Outreach program.

He also edited a special JGR-planets volume on terrestrial and planetary radars. He is on the editing board of Geosciences and National Geography and co-chaired several sessions in American Geophysical Union and other international meetings on planetary radars.

Education:

  • Ph.D – Astronomy and Planetary Science – Paris-Sorbonne University, Paris (2002)

Award/ Honours :

  • JPL/NASA Mariner Award
  • Served as Egyptian President Advisor for Scientific Affairs (2013-2014)

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pix: en.wikipedia.org

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U.S.A / FRANCE / EGYPT / EGYPTIAN AMERICAN / ARAB AMERICAN

Halima Benbouzza – Biotechnology and Plant Geneticist. Scientist.

Dr. Halim Benbouzza . Scientist. Academic. Researcher – Genetic Diversity, Plant Breeding, Bioethics, Biosecurity.

Posts:

  • Director – National Biotechnology Research Centre
  • Chair of Joint-Committee between Health and Biology sector – appointed by Algeria Government (2011)
  • Chair of the Guidance Committee of the Pharmacy and Biotechnology Project- Algeria. Appointed by the Prime Minister (2013)
  • Professor (Agronomic Science), University of Batna 1, Batna

Awards and Honours:

  • ‘Women in Science’ – Hall of Fame Program, honoured by U.S. State Department (2014)
  • ‘Next Einstein Forum’ – one of the 6 best female researchers contributing to advancing science in africa (2010)

Education :

  • Ph.D – Agro Biotech Gembloux, Belgium
  • Masters in Biotechnology – Gembloux Agro-Bio Tech, University of Liege, Belgium
  • Graduate – University of Batna’s Faculty of Engineering, Algeria

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pix: twitter.com

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ALGERIA