For artificial implants to be successful, bone must meld to the metal that artificial hips, knees and shoulders are made of. A team of engineers at Brown University have discovered that bone cells are more apt to adhere to a rough carbon nanotube surface than other surfaces.
The number of hip and knee replacement surgeries performed in the United States has skyrocketed over the last decade. According to the American Academy of Orthopaedic Surgeons (AAOS), there will be a 101 percent increase in hip replacements and a 550 percent increase in knee replacements between now and 2030.
Waterford Wedgwood PLC, which manufacturers two of the world’s most famous brands, has just declared bankruptcy. Even more shocking, the 250-year-old Anglo-Irish manufacturer of fine crystal and pottery has shifted much of its production to Asia to slash manufacturing costs.
To meet unprecedented demand for artificial hips, knees and other types of implantable joints, many orthopedic device manufacturers are attempting to adopt new types of materials, improve productivity and shorten time to market.
They’re considered playthings, but they’ve launched the careers of generations of engineers. The Erector set and its English cousin, Meccano, are the ultimate assembly toys. They allow users to design and build a wide variety of machines, structures and vehicles. Many engineers trace their mechanical roots to the day when they first set eyes on an Erector or Meccano set.
If an American automaker wants a lithium-ion battery today, it often has to turn to Japan. Perhaps it's time to create a home-grown lithium-ion battery industry that can compete with the Japanese. We need a strong government-backed program to develop a new line of green car batteries.
As automakers in Asia, Europe and North America ask for billions of dollars in government handouts and ponder green alternatives to the internal combustion engine, they should call a time out. How about shutting down the entire auto industry for one month? Automakers, suppliers and dealers could use that time to reinvent the way that vehicles are mass-produced and delivered to consumers.
The towns of Elkhart and Warsaw sit less than 40 miles apart in northern Indiana. But, when it comes to the local manufacturing climate, the two communities might as well be located at the North and South poles. The two extremes help illustrate an interesting phenomenon: Today’s crazy economic climate doesn’t always follow standard geographic boundaries.
The energy for the next generation of miniature electronic devices could come from tiny microbatteries about half the size of a human cell and built with viruses. Engineers at the Massachusetts Institute of Technology (MIT, Cambridge, MA) have developed a battery that could one day power a range of miniature devices, by stamping them onto a variety of surfaces.
After years of development in the research lab, thin-film batteries may finally be ready for widespread commercialization. The devices are appealing to many manufacturers because they feature customizable shapes, flexible form factors and ultra-low weight that enables new functionality to be added to a broad range of products.