tandem

The CT-2 is a shape-shifting four-wheeled urban getabout, a tandem two-seater that can park in motorcycle spaces and filter through traffic – but that spreads its wheels wider for stability at higher speeds. It's slated for production in 2026.

The dynamic duo of silicon and perovskite continue their rampage through the solar cell industry. Researchers at KAUST have developed a new silicon/perovskite tandem solar cell with a record-breaking efficiency.

Perovskite and silicon are proving to be a formidable duo in the world of solar cells, and now they’ve hit a new record efficiency. A team at Helmholtz Zentrum Berlin (HZB) have developed solar cells with an efficiency of over 32%.

A new solar cell packs a record voltage and (arguably) a record efficiency for its kind. The tandem solar cell uses two layers of perovskite that tap into different wavelengths of light, plus a special surface treatment reduces wasted energy.

Scientists have broken the efficiency record for tandem silicon-perovskite solar cells, surpassing the milestone of 30 percent for the first time. The new record takes the technology beyond the upper limits of silicon alone, using low-cost materials.

Silicon has long been the gold standard for solar cells, but it’s approaching its limit. Perovskite is emerging as a promising partner, and now engineers have achieved a new efficiency record for this kind of tandem solar cell – almost 30 percent.

Solar cells are constantly improving on the road to maximum efficiency. Now, three records have been broken by two different devices, including one that pushes the highest overall solar conversion efficiency towards the 50-percent mark.

Stacking perovskite solar cells on top of silicon ones is one way to increase the amount of sunlight harnessed. Now researchers at Australian National University (ANU) have broken a new efficiency record for these tandem solar cells.

When we've attended the North American Handmade Bicycle Show in the past, we've always been on the lookout for things that weren't just plain ol' bikes. Well, this year's show didn't disappoint, with Bilenky Cycle Works showcasing a semi-recumbent creation that really caught our eye.

Tandem bicycles are great for allowing couples to ride together, but they're not exactly conducive to riding by yourself. While you could just buy a tandem and a solo bike, Calfee Design has built a tandem that can be converted into a single.

Narrow-track vehicles are almost certainly part of the solution for traffic congestion. Now Toyota is undergoing research in pioneering EV-sharing schemes for last mile multi-model transport in Japan and France using it's i-Road car-motorcycle combination and its Japan-only COMS EV.

On a traditional tandem bike, the person in front steers while the rear rider just pedals. That's fine if they're both adults, but what if the riders are a parent and their young child? That's where the Hugbike comes in. It lets the parent sit in the back, while reaching forward to steer.