Tag

Defects

All articles tagged with #defects

science-and-technology1 year ago•4 min saved

"Scientists Unveil X-Ray Vision to Peer Inside Crystals"

Researchers at New York University have developed a technique called "Crystal Clear" that allows scientists to visualize the internal structure of colloidal crystals in three dimensions. Using transparent particles, dye molecules, and confocal microscopy, they can create dynamic models to study the arrangement and defects within crystals, providing new insights into crystallization processes and potentially aiding in the development of better materials.

via Phys.org|

#colloidal-particles #crystals #defects

technology2 years ago•2 min saved

iPhone 15 Pro: Defects, Durability, and Display Issues Reported by Users

Some iPhone 15 Pro and iPhone 15 Pro Max units are being shipped with defects, including color issues on the titanium frame, display misalignment, dirt on camera lenses, scratches on the screen, and signs of damage. These problems have been reported in units destined for the US, Chinese, and EU markets. Some iPhone 15 and iPhone 15 Plus units are also showing defects. Apple users who receive defective units are advised to contact Apple for a replacement, although the defects do not impact the functionality of the devices.

via PhoneArena|

#defects #display-misalignment #iphone-15-pro

technology2 years ago•1 min saved

"Netizens express concerns over defects and fragility of Apple's new iPhone 15"

Apple's new iPhone 15 faced a barrage of complaints from netizens shortly after its release, with users reporting issues such as poor durability, uneven coloring, and software glitches. Despite the criticisms, demand for the new iPhones remained strong, with long queues forming outside stores worldwide. Some users also complained about the device being a "fingerprint magnet," although Apple dismissed this as a temporary color change caused by skin oil. The success of the iPhone 15 models will be crucial for Apple's holiday sales and overall growth.

via Mint|

#apple #complaints #defects

transportation2 years ago•2 min saved

"Union Pacific Faces Alarming Number of Defects, Federal Inspectors Discover"

Federal inspectors found an alarming number of defects in Union Pacific's locomotives and railcars at its railyard in Nebraska this summer, with defect rates twice the national average. The railroad was reluctant to address the problems, prompting concerns about rail safety. The recent layoffs at Union Pacific were questioned as a potential cause for the lack of repairs, but the company maintains that it has appropriate staffing levels. Railroad safety has been a nationwide concern, but few significant changes have been made.

via KOLN|

#defects #federal-inspectors #locomotives

transportation2 years ago•2 min saved

"Union Pacific Faces Alarming Number of Defects, Federal Inspectors Discover"

Federal inspectors discovered an alarming number of defects in Union Pacific's locomotives and railcars at the world's largest railyard in Nebraska this summer. The railroad was reluctant to address the problems, prompting concerns about rail safety. The defect rates found by inspectors were twice the national average, but the specific nature of the defects was not disclosed. The Federal Railroad Administrator expressed concern over Union Pacific's poor compliance and questioned whether recent layoffs had left the company understaffed for necessary repairs. Union Pacific maintains that safety is a priority and is reviewing the concerns raised by the Federal Railroad Administration.

via ABC News|

#defects #federal-railroad-administration #railroad

science-and-technology2 years ago•3 min saved

Decoding the Crucial Role of Auger-Meitner Effect in Electron Energy Loss

Researchers at UC Santa Barbara have uncovered the role of the Auger-Meitner effect in explaining the efficiency loss in blue or ultraviolet light-emitting diodes (LEDs) caused by defects or impurities. The Auger-Meitner effect allows an electron to transfer its energy to another electron, resulting in a higher-energy state. The researchers developed a methodology that conclusively established the crucial role of the Auger-Meitner process, showing trap-assisted recombination rates in gallium nitride LEDs that were more than a billion times greater than previously considered. This understanding could help improve the efficiency of semiconductor light emitters and other wide-band-gap materials affected by defects.

via SciTechDaily|

#auger-meitner-effect #defects #led-efficiency

science-and-technology2 years ago•4 min saved

Graphene's Potential Unveiled Through Visible Growth.

Researchers from the University of Amsterdam and New York University have developed a way to observe the formation and evolution of defects in graphene-like materials. They used micrometer-sized models of atomic graphene made from "patchy particles" that interact with the same coordination as atoms in graphene. The researchers found that the most common type of defect forms in the initial stages of growth, and observed how the lattice mismatch is repaired by another defect, leading to a stable defect configuration. The direct observations allow insights into atomic dynamics in this class of materials, which can help further engineer the atomic counterparts for various applications.

via SciTechDaily|

#atomic-dynamics #defects #graphene