Author Archives: steve bush

Perovskite light-emitting diodes get brighter

Perovskite materials could make a splash in light emission as well as solar power generation, according to researchers at Tokyo Tech who have engineered associated charge transport layers to achieved a significant performance boost. The result is a green ∼500,000cd/m2 33 lm/W perovskite (CsPbBr3) LED,  a 20,000cd/m2 CsPbBrI2 red LEd and a CsPbBrCl2 blue one. The same CsPbBr3 green perovskite ...

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Quad 1000Base-T transformer is SMD

Würth is offering a surface-mount quad transformer for 1000Base-T Ethernet LAN connections. “WE-LAN AQ transformer convinces in an exemplary fashion in terms of crosstalk, insertion loss, return loss, differential and common-mode rejection,” claimed the firm, without giving figures. Inside, there are transformers and (smaller) common-mode chokes However, this data sheet gives the numbers as: crosstalk (1-100MHz) ...

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Electric vehicle battery monitor chip is accurate for 15 years, and works with 420 cells

Renesas has announced its fourth-generation lithium-ion battery management IC for electric vehicles – promising “unmatched lifetime accuracy”, which it quantifies as ±6mV (at ±6σ) 15-year board level accuracy. Called ISL78714, the chip monitors and balances up to 14 series connected cells with ±2mV accuracy (14bit ADC) across automotive temperature ranges, and can be using in stacks ...

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Edge computer gets second Ethernet interface

Harting has added a second Ethernet interface to its Mica Edge computer. “With many Industry 4.0 applications, it is necessary to separate networks and send data back and forth between Ethernet protocols without permitting external applications direct access to a corporate network,” according to the firm. “As a result, Harting has added a second interface ...

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Silicon photonics firm Rockley raises another $52

On-silicon photonics firm Rockley Photonics has accumulated $52m in the first closure of Series E funding round, taking the total it has raised to $165m. Rockley is developing ways to integrate II-V photonics onto silicon wafers, connected by low-loss waveguides. It was founded in 2013 by Dr. Andrew Rickman, who previously founded UK silicon photonics ...

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Stretchy stick-on monitor sends vital signs long-term

Long-term health monitoring of adults, babies and small children without concern for skin injury or allergic reactions is the aim of a project at Georgia Tech, which has produced a stretchy patch that can broadcast electrocardiogram (ECG), heart rate, respiratory rate and motion activity data. Connections are to gold skin-like electrodes through printed conductors that ...

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Next-generation floating tidal turbine gets one step closer

Orbital Marine Power has taken another step towards installing its 2MW floating tidal turbine off Orkney, by engaging Faun Trackway to manufacture the four steel anchor structures, plus bespoke mooring connectors, at Faun’s facilities on Anglesey. The turbine, called O2, will be installed in the Fall of Warness where Orbital has an existing berth, and a grid connection ...

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Tesla steps into modular grid-scale storage with Megapack

Tesla is developing a battery specifically for grid power storage – following on from it building the world’s largest lithium-ion battery in Australia. Called Megapack it is an assembled containerised 3Wh battery that includes 1.5MW of inverters. “Every Megapack arrives pre-assembled and pre-tested in one enclosure from our Gigafactory, including battery modules, bi-directional inverters, a thermal ...

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Need to print metal tracks on jelly?

It is possible to deposit metallic tracks on soft surfaces including jelly, as has been proved by Iowa State University. The key is a low melting point alloy – in this case Field’s metal (eutectic bismuth indium tin) – delivered by a novel technique created in the lab of Martin Thuo. By encapsulating tiny particles of the metal ...

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A safe way to bring down rogue drones

Forget nets, attack drones, or lasers – Korean researchers have found a way to coax rogue drones out of the sky – at least, most of those flying on GPS autopilot. “This technology can safely guide a drone to a desired location without any sudden change in direction in emergency situations,” according to national research ...

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