Compounds enable laser transmission welding

transmission welding

For this purpose, Lanxess has developed a wide range of laser-weldable polyamides and polybutylene terephthalates (PBT) Durethan LT and Pocan LT (Laser Transparency) and has expanded its range to include three new compounds.

Flexible OLED enables efficient antimicrobial photodynamic therapy

photodynamic therapy

In a paper titled “Flexible organic light-emitting diodes for antimicrobial photodynamic therapy” published in Nature’s Flexible Electronics journal, they report flexible top-emitting OLEDs with a tunable emission peak (through chemistry) from 669 to 737nm to match methylene blue as a photosensitizer. The OLEDs were attached to a flexible graphite heat sink to limit heat generation and extend device’s lifetime.

Physicists demonstrate atomically-thin ultra-fast room temperature LED

LED

This is also the first successful test of an electrically driven light emitter using atomically thin semiconductors embedded in a light trapping structure (optical cavity), the researchers claim in a paper titled “A room-temperature polariton light-emitting diode based on monolayer WS2“ published in Nature Nanotechnology.

While such LEDs have been realized in other materials at low temperatures, this device operates at room temperature and is fabricated using the now well known “scotch tape” based technique

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Native blue and green microLED on a single epitaxial wafer

GaN-on-Silicon

The potential of microLEDs is well known but several challenges remain before ramping up to large scale consumer applications. To form RGB microLED displays, typical approaches are to use a pick and place process to transfer discrete R, G and B pixels or to use native blue LEDs as the light source for subsequent colour conversion, to red and green.

Yole’s reality check on MicroLEDs

MicroLEDs

Startups have raised more than US$800 million to date, including at least US$100 million in 2019 and it is estimated that Apple has spent in the range of US$1.5 to US$2 billion on the technology over the last five years, observe the analysts at Yole. Panel makers such as Samsung Display, LG Display, AUO or Innolux have also significantly increased their efforts, and novel performance or process yield breakthroughs regularly make the news.

12.1-inch WXGA color TFT-LCD modules for harsh outdoors

TFT-LCD modules

The new modules will offer an unprecedented combination of advanced features, including high-resolution WXGA (1,280×800 pixels), super-wide 176-degree horizontal/vertical viewing angles and a high luminosity of 1,500 cd/m2. They will additionally feature a high contrast ratio of 1,000:1, a versatile operating-temperature range of -40 to +80ºC and will have high resistance to vibration, attributes for which there is increasing market demand.

How To Do Machine Learning on Arm Cortex-M Microcontrollers

Machine learning (ML) algorithms are moving processing to the IoT device due to challenges with latency, power consumption, cost, network, bandwidth, reliability, security, and more.

As a result, interest is growing in developing neural network (NN) solutions to deploy ML on low-power IoT devices, for example with microcontrollers powered by proven Arm Cortex-M technology.

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