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The Laser That Once Filled a Lab Now Fits on a Tiny Chip

By: EPFL
8 June 2026 at 21:43
Chip Based Ultrafast LaserScientists have finally packed a laboratory-class ultrafast laser onto a tiny photonic chip. Ultrafast lasers generate bursts of light that last only a few hundred femtoseconds, each one just a quadrillionth of a second long. These extremely short pulses are used in a wide range of technologies, including precision manufacturing, eye surgery, and optical frequency [...]

The Next Computing Revolution May Come From Stacking Chips Like Skyscrapers

3D Silicon Chip Circuit BoardResearchers may have unlocked the future of computing by turning flat silicon chips into densely stacked 3D architectures. For decades, the semiconductor industry has boosted computing power by making transistors smaller and fitting more of them onto a single chip. That strategy has fueled remarkable advances in electronics, but it is now approaching fundamental physical [...]

MIT Engineers Solve a Major Lidar Problem That Has Stumped Researchers for Years

Array of Integrated Antennas Minimizing Unwanted CrosstalkA new MIT-designed lidar chip uses specially engineered antennas to reduce interference and widen the sensor’s field of view. From self-driving cars navigating busy streets to drones surveying disaster zones, lidar has become one of the most important technologies for helping machines perceive the world in three dimensions. By sending out rapid pulses of infrared [...]

Remote Operated Gate Control System

28 February 2026 at 22:11
Introduction This project began life in 2017 when the author had just begun experimentation with GPIO pins on a Raspberry Pi 3. At that point in time a greatly appreciated Christmas presentΒ  was an β€œExplorer Hat” module which provided the aspirant programmer with 5 volt tolerant input and output channels (analogue and digital) , capacitive...

The Sophisticated Threads behind a Hat That Senses Traffic Lights

21 February 2024 at 13:30

A new technique to make electronic fibers could help solve wearable technology’s flexibility problem

Β© Zhixun Wang

Hundreds of metres long high-performance flexible semiconductor fibres collected on a cylindrical bobbin, together with some preforms after the manufacturing process.

Sinc Function & Upsampling in Digital Audio Explained

14 December 2023 at 20:50
Introduction This elaborates some of the claims in my insights article on digital audio. The Sinc Function Upsampling and Zero Insertion The first link in my insights article has a section on filters, but I will detail the most critical case. The bit depth is assumed to be so large for all practical purposes that...

Modern DACs, Dither, DXD & High-Res Audio Explained

12 December 2023 at 01:08
Introduction First, we need some background in Digital Signals. This can be mathematically quite advanced, but since I would like this article to be accessible to as wide an audience as possible, here is a link that explains what is needed (not even Calculus is required): https://brianmcfee.net/dstbook-site/content/intro.html Shannon’s Sampling Theorem An important point not emphasized...
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