Mechanical

When it comes to timepieces I’m firmly in the camp that thinks the digital watch is the pinnacle of time telling technology. It imparts its information at a glance with no need to waste time adding or subtracting minutes in multiples of five, or estimating if the big hand is two or three minutes between markers – if there are markers at all. I will concede, however, that for many people watches are as much a fashion statement as a means to tell time and as such designers are always looking to redefine the humble watch in different and interesting ways. The latest eye-catching timepiece to catch our eye is the Geocentric concept watch that uses a motion similar to planets rotating around a sun to tell time.  Read More

Engineers from Princeton University have developed power-generating rubber films that could be used to harness natural body movements such as breathing or walking in order to power electronic devices such as pacemakers or mobile phones. The material, which is composed of ceramic nanoribbons embedded onto silicone rubber sheets, generates electricity when flexed and is highly efficient at converting mechanical energy into electrical energy.  Read More

Researchers have discovered that common bacteria suspended in a solution can be made to turn microgears. This opens up the possibility of building hybrid biological machines at the microscopic scale. The researchers say the discovery demonstrates how microscopic swimming agents, such as bacteria or man-made nanorobots, in combination with hard materials, can constitute a "smart material", which can dynamically alter its microstructures, repair damage, or power microdevices.  Read More

Scientists at Cornell University report they can now use a light beam carrying a single milliwatt of power to move objects and even change the optical properties of silicon from opaque to transparent at the nanometric scale. Such an advancement could prove very useful for the future of micro-electromechanical (MEMS) and micro-optomechanical (MOMS) systems.  Read More

It seems that the lessons learned in developing a mechanical KERS system for F1 may yet hold the key to a low-cost, high-efficiency hybrid system particularly suited for the stop-start patterns of buses, which are quite similar to the distances between capturing and delivering energy of those of a race car. Torotrak will deliver a paper at the SAE Commercial Vehicle Congress in Illinois next week showing how flywheel KERS for buses can offer more than 30 percent fuel saving over the London bus test cycle, yet package around an existing transmission.  Read More

Researchers are increasingly looking to nature for design inspiration in a wide range of mechanical devices. Doing so allows them to draw on the millions of years of evolution that have resulted in designs offering superior performance and efficiency. Micro Aerial Vehicles (MAVs) is one field that has recognized the maneuverability and performance virtue of nature’s small flyers, with various attempts being made to mimic these designs and produce vehicles that outperform traditional fixed-wing or rotary-wing craft. We’ve seen the development of a tiny a ‘nano air vehicle’ inspired by the hummingbird, a UAV based on a Pterodactyl and a six-inch long robotic spy plane that, like this new design from North Carolina University, draws on the physical characteristics of a bat.  Read More

As the name suggests, automatic or self-winding watches wind themselves using a moving weight mechanism inside the watch. All well and good if you are wearing your watch everyday, but if you happen to have a collection, you'll often find yourself faced with the fiddly task of manual winding and resetting features like perpetual calendars - a difficult job for large unwieldy fingers (men) and delicate fingernails (women) - which is where watchwinders come in. This one, the Sparta Mini from Orbita, is for the ladies.  Read More