Researchers measure electron emission to improve understanding of laser-based metal 3-D printing

Researchers measure electron emission to improve understanding of laser-based metal 3D printing
Researchers measured the emission of electrons from the surface of stainless steel under laser powder bed fusion (LPBF) conditions, demonstrating the potential for using thermionic emission signals to detect phenomena that can produce defects in parts and improve understanding of the LPBF process. The top image shows a multi-physics simulation of laser-induced melting of stainless steel, showing the electron emission signal primarily produced at the front of the surface depression. The bottom image depicts cross-sections of laser tracks produced in stainless steel. Monitoring of the thermionic emission can detect transition between conduction (left) and keyhole (right) mode welding regimes. Credit: Aiden Martin/LLNL

Lawrence Livermore National Laboratory (LLNL) researchers have taken a promising step in improving the reliability of laser-based metal 3-D printing techniques by measuring the emission of electrons from the surface of stainless steel during laser processing.


Researchers collected thermionic emission signals from 316L stainless steel under laser powder

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Apple hires venture capitalist Josh Elman to help improve App Store discovery

Apple has hired Josh Elman, a prominent venture capitalist and former vice president of product at stock-trading app Robinhood, to help it improve iOS app discovery in the App Store. Elman announced the news via his Twitter account on Monday, saying he’s also leaving his role as a board partner at the firm Greylock Partners and as a board member of prominent tech companies like Discord and Medium.

Elman joining the App Store team may help improve the iPhone maker’s relationship with developers after a rather rough year in which Apple’s stewardship of the App Store has been called into question by critics, rivals, and regulators. For instance, Elman is previously a board member of and investor in Houseparty, the chat app acquired by Fortnite creator Epic Games.

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Apple searches for ‘folding camera’ supplier to improve iPhone zoom

Apple’s iPhone camera may improve the zoom without needing to increase the size of the camera bump, with the company allegedly looking for suppliers of “folded cameras” for future models.

The size limitations of smartphones make it hard to design camera systems that offer better features while also maintaining a minimal size. For some features, like an enhanced zoom, that requires more space than is currently offered, but that may not be the case in a future iPhone.

Apple is said by sources of ETNews to be wanting to include a triple camera system in future iPhone models, but one that relies on a “folded camera” for at least one of the trio.

Rather than being a straight line of sight between the sensor and the subject through lenses, a folded camera structure relies on a mirror or prism in the middle of the lens collection. This

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Combining Mixed Reality Tech With Brain Signals Could Improve Rehabilitative Medicine

A new headset and software platform allows researchers and developers of mixed reality programs the opportunity to incorporate signals from the brain and body into their technology, something that has wide potential for use in rehabilitative medicine.

Virtual and augmented reality has already been used to treat patients with a range of psychiatric disorders including ADHD, PTSD and anxiety, but this tech could help improve how effective it is.

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“You can use virtual reality to put people into those environments and throttle how intense the experience is, but if you could know how intense the reaction is that someone is having, you can decide whether to dial it up a little bit, or dial it down a little bit just to make sure that they’re not overwhelmed by the immersion,” says Conor Russomanno, CEO of OpenBCI, a Brooklyn-based startup that developed the Galea headset.

Another application of the technology,

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Targeting Technology Investments to Improve the Client Experience

Banks’ effectiveness in targeting their IT spending will help separate winners from losers in the post-COVID marketplace.

To date, four global banks have differentiated themselves in wholesale banking by deploying strong digital/technical capabilities and analytics that outpace rivals. In alphabetical order, those banks are:

  • Bank of America
  • Citi
  • HSBC
  • J.P. Morgan

This list of digital leaders—and the analysis and recommendations included in our new Coalition Greenwich Report – The Future of Banking: Digital Transformation – The Pathway to Profitable Differentiation – were derived from data collected in the Greenwich Digital Transformation Benchmarking Study.

Banks can use technology to improve the client experience in three main ways: by speeding or automating processes, adding new values and increasing transparency.

1.    Speed in the client experience is mainly a function of streamlining requirements and automation. The COVID crisis has accelerated the process of automating parts of routine banking functions with digital tools. By

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No. 14 Texas Tech routs Sam Houston St to improve to 2-0

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Sam Houston State’s Zach Nutall (10) and Texas Tech’s Terrence Shannon Jr. (1) try to rebound the ball during the first half of an NCAA college basketball game Friday, Nov. 27, 2020, in Lubbock, Texas.

AP

Mac McClung is already doing for No. 14 Texas Tech exactly what he told coach Chris Beard he would after transferring from Georgetown.

McClung had 18 points to again lead the Red Raiders in scoring as they improved to 2-0 with an 84-52 victory over Sam Houston State on Friday.

“No surprises with Mac, He’s delivered,” Beard said.

“We knew what we were getting into when Mac was coming, he’s a scoring guard,” said Terrence Shannon Jr., one of Tech’s returning players. “He’s doing well out there right now. … We’re happy for him scoring the ball well.”

Marcus Santos-Silva, a graduate transfer, had 12 points and nine rebounds in

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New plant-based gel to fast-track ‘mini-organs’ growth, improve cancer treatment — ScienceDaily

– Monash University researchers have created the world’s first bioactive plant-based nanocellulose hydrogel to support organoid growth for biomedical applications. This includes cancer development and treatment.

  • Nanocellulose gels cost a fraction of the price compared to the current gold standard.
  • These hydrogels are plant-based and animal-free, and can mimic the human body conditions on a dish.

Monash University researchers have created the world’s first bioactive plant-based nanocellulose hydrogel to support organoid growth and help significantly reduce the costs of studies into cancer and COVID-19.

This discovery by researchers at BioPRIA (Bioresource Processing Institute of Australia), Monash University’s Department of Chemical Engineering and the Monash Biomedicine Discovery Institute will develop organoids cheaper, faster and more ethically.

The hydrogel can also improve drug screening and disease modelling for infectious diseases, like COVID-19; metabolic diseases, such as obesity and diabetes; and cancer.

The findings, published in Advanced Science, emerge as a promising

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The Latest and Greatest Tech Gadgets to Improve Every Aspect of Your Life



Microsoft may earn an Affiliate Commission if you purchase something through recommended links in this article.



Microsoft may earn an Affiliate Commission if you purchase something through recommended links in this article.

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Russian scientists improve 3D printing technology for aerospace composites using oil waste

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IMAGE: Aviation parts printed on a 3D printer from new metal powders
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Credit: Sergey Gnuskov/NUST MISIS

Scientists from NUST MISIS have improved the technology of 3D printing from aluminum, having achieved an increase in the hardness of products by 1,5 times. The nanocarbon additive to aluminum powder, which they have developed, obtained from the products of processing associated petroleum gas, will improve the quality of 3D printed aerospace composites. The research results are published in the international scientific journal Composites Communications

Today, the main field of application for aluminum 3D printing is the creation of high-tech parts for the aviation and space industries. The presence of even the slightest defects in printed structures is critical to the safety of the technology being created. According to NUST MISIS scientists, the main risk of such defects is the high porosity of the material, caused, among other reasons, by the qualities

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How Hasty uses automation and rapid feedback to train AI models and improve annotation

Computer vision is playing an increasingly pivotal role across industry sectors, from tracking progress on construction sites to deploying smart barcode scanning in warehouses. But training the underlying AI model to accurately identify images can be a slow, resource-intensive endeavor that isn’t guaranteed to produce results. Fledgling German startup Hasty wants to help with the promise of “next-gen” tools that expedite the entire model training process for annotating images.

Hasty, which was founded out of Berlin in 2019, today announced it has raised $3.7 million in a seed round led by Shasta Ventures. The Silicon Valley VC firm has a number of notable exits to its name, including Nest (acquired by Google), Eero (acquired by Amazon), and Zuora (IPO). Other participants in the round include iRobot Ventures and Coparion.

The global computer vision market was pegged at $11.4 billion in 2020, a figure that is projected to rise to more

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