Namarrgon - Slashdot User

Submission + - New Electric Motor Design Massively Boosts Power & Torque Density and Effici (newatlas.com)

Submitted by Namarrgon on Saturday August 10, 2019 @02:06AM

Namarrgon writes: Linear Labs' impressive new circumferential flux motor design (video)uses four rotors and a software-reconfigurable, multi-coil stator, enclosed in a 3D magnetic "torque tunnel" to maximise efficiency even at high speeds. The stator can be configured on the fly by regrouping coils to use a variable number of overlapping phases simultaneously, producing full torque smoothly at low rpms without torque pulsing, or changing speeds with no change to frequency, current, or voltage, like an electronic transmission. An innovative approach to field weakening by gradually misaligning permanent magnets allows efficiencies to actually climb as speeds increase.

These features produce a highly compact motor with two to five times the torque density, at least three times the power density and at least twice the total output of any conventional permanent magnet motor of the same size. This also eliminates the need for gearing in many applications, reducing costs and weight while gaining 10-20% more range from a given battery pack.

Linear Labs has received 21 patents so far, with another 29 pending, and their prototypes have been verified by independent expert tests. Recently they received $4.5 million in seed funding, and are planning to build them into car and scooter prototypes over the next couple of years.

Submission + - SnO: First Stable P-Type 2D Semiconductor Discovered (phys.org)

Submitted by Namarrgon on Monday February 15, 2016 @06:04PM

Namarrgon writes: Transistors made with Ashutosh Tiwari's new semiconducting material could lead to computers and smartphones that are more than 100 times faster than regular devices. While researchers in this field have recently discovered new types of 2D material such as graphene, molybdenun disulfide and borophene, they have been materials that only allow the movement of N-type, or negative, electrons. In order to create an electronic device, however, you need semiconductor material that allows the movement of both negative electrons and positive charges known as "holes." The tin monoxide material discovered by Tiwari and his team at the University of Utah is the first stable P-type 2D semiconductor material ever in existence.

Submission + - Eternal 5D data storage could record the history of humankind (phys.org)

Submitted by Namarrgon on Monday February 15, 2016 @05:35PM

Namarrgon writes: Using nanostructured glass, scientists from the University of Southampton's Optoelectronics Research Centre (ORC) have developed the recording and retrieval processes of five dimensional (position, size, and orientation) digital data by femtosecond laser writing.
The storage allows unprecedented properties including 360 TB/disc data capacity, thermal stability up to 1,000ÂC and virtually unlimited lifetime at room temperature (13.8 billion years at 190ÂC) opening a new era of eternal data archiving.

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