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How to Build a Safer, More Energy-Dense Lithium-ion Battery

Chipmaking techniques contribute to a three-dimensional battery design that outperforms today’s best cells

11 min read
Enovix 3D Silicon Lithium-ion Battery
Stacked Deck: This cutaway view of an Enovix 3D Silicon lithium-ion rechargeable battery prototype has three stacked 1-millimeter-thick cells.
Photo: Enovix Corp.

Hardly a month passes without shocking news of lithium-ion batteries catching fire: Laptops are torched, airlines are grounded, hoverboards go up in flames. The 2016 fires inside Samsung’s Galaxy Note 7 smartphone led to a $US 5 billion recall and then to a discontinuation of the model, moves that together cut Samsung’s market capitalization by many billions.

In January 2017, after months of speculation, Samsung announced that two separate design problems created the battery malfunctions that caused some of the devices to overheat. That different design flaws can produce the same catastrophic outcome underlines the inherently unstable nature of today’s Li-ion batteries. Any mobile product incorporating them is thus potentially unsafe.

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How PostScript Kickstarted Desktop Publishing

Adobe’s PostScript became the heart of the digital printing press

8 min read
An illustration consisting of a spiral of calligraphy-style lettering that repeatedly spells the word “infinity”.

“Infinity Circle,” by Xerox PARC researcher Scott Kim, was made using JaM, predecessor to PostScript.

Adobe

The story of PostScript has many different facets. It is a story about profound changes in human literacy as well as a story of trade secrets within source code. It is a story about the importance of teams and of geometry. And it is a story of the motivations and educations of engineer-entrepreneurs.

The Computer History Museum is excited to publicly release, for the first time, the source code for the breakthrough printing technology, PostScript. (Register to download the code here.) We thank Adobe for the company’s permission and support, and Adobe cofounder John Warnock for championing this release.

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Poll: Would You Want to Work a Shorter Week?

Weigh in with your thoughts on a four-day workweek

2 min read
Person holding a giant sized pencil standing next to a giant sized calendar with days crossed out to show a four-day workweek.
iStock

When I worked for a company in Texas a few years ago, one of the benefits I enjoyed was a four-and-a-half-day workweek. The system enabled my colleagues and me to run some personal errands, see our doctors, and pick up our kids from school, among other activities.

The COVID-19 pandemic required many companies to adopt a flexible work schedule to keep their operations open. Many allowed their employees to work from home full time. Nowadays plenty of those employers are trying to persuade their workers to return to the office full time, but they are facing some resistance.

One solution some companies are trying is a four-day, 32-hour workweek for the same pay.

​Does your company offer a four-day workweek?

Would you like to work a four-day workweek?

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Fourth Generation Digitizers With Easy-to-Use API

Learn about the latest generation high-performance data acquisition boards from Teledyne

1 min read

In this webinar, we explain the design principles and operation of our fourth-generation digitizers with a focus on the application programming interface (API).

Register now for this free webinar!

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