Feather-light alloy

Trabecular bone: light as a feather, stiff as a board.

Trabecular bone is a crucial and unique load-bearing tissue in the skeleton found near the ends of long bones and in the vertebral bodies. Trabecular bone has the ability to rapidly adapt to the mechanical loading environment by optimizing its mass and structure in order to bear high loads with as little bone tissue as possible, allowing bones to remain strong while minimizing their weight. Mea...

Light–induced magnetization reversal of high-anisotropy TbCo alloy films

Feather formations

The individual feathers in the skin of a developing chicken embryo are arranged in a precise array within a series of so-called 'tracts'. The images above show nascent feather buds in the legs of embryos at 8–9 days of incubation. Buds are added sequentially across the forming feather tract, as shown by the range of developmental stages in the image at top left. (In all three upper images, buds...

Light Like a Feather: A Fibrous Natural Composite with a Shape Changing from Round to Square

Only seldom are square/rectangular shapes found in nature. One notable exception is the bird feather rachis, which raises the question: why is the proximal base round but the distal end square? Herein, it is uncovered that, given the same area, square cross sections show higher bending rigidity and are superior in maintaining the original shape, whereas circular sections ovalize upon flexing. T...

Secure Communication over BSN Using Modified Feather Light Weight Block (MFLB) Cipher Encryption

Wireless Body Sensor Network (WBSN) has tremendous applications in healthcare domain. The body sensors collects personal as well as medical information form patient’s body and transmit it to healthcare people through internet. In this period of time, it is crucial to ensure security and privacy due to unauthorized access of personal health information by intruder or eavesdroppers. Therefore, en...