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Category: nanotechnology – Page 306

Behold – the only known example of a biological wheel. Loved by creationists, who falsely think they are examples of “intelligent design”, the bacterial flagellum is a long tail that is spun like a propeller by nano-sized protein motors.

Now these wheels and their gearing have been imaged in high resolution and three dimensions for the first time. Morgan Beeby and his colleagues at Imperial College London used an electron microscope to resolve the mechanisms that provide different amounts of torque to the motors.

The motors are diverse, coming in a wide variety of shapes, sizes and power outputs. Indeed, the diversity of the motors and the fact that they have evolved many times in different bacterial lineages, scuppers the creationist view that the machinery is “irreducibly complex”.

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Interesting — DNA Microchips to be released soon.

Researchers presented this incredible work at the national meeting and exposition of the American Chemical Society (ACS) in San Diego, California, on Sunday.

Adam T Woolley, professor of chemistry at Brigham Young University (BYU) said that they are planning to use DNA’s small size and base-pairing capabilities and ability to self-assemble, and direct it to make nanoscale structures that could be used for electronics.

“The problem, however, is that DNA does not conduct electricity very well. So we use the DNA as a scaffold and then assemble other materials on the DNA to form electronics,” Woolley added.

Continue reading “Get ready for DNA-based computer chips!” | >

Scientists has opened a door to faster, cheaper computer chips with the help of ‘DNA origami.’ “We would like to use DNA’s very small size, base-pairing capabilities and ability to self-assemble, and direct it to make nanoscale structures that could be used for electronics,” Adam T. Woolley said.

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Could a cheap molecule used to disinfect swimming pools provide the key to creating a new form of DNA nanomaterials?

Cyanuric acid is commonly used to stabilize chlorine in backyard pools; it binds to free chlorine and releases it slowly in the water. But researchers at McGill University have now discovered that this same small, inexpensive molecule can also be used to coax DNA into forming a brand new structure: instead of forming the familiar double helix, DNA’s nucleobases — which normally form rungs in the DNA ladder — associate with cyanuric acid molecules to form a triple helix.

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Another great invention by the folks from Australia.

Researchers said they developed the new thinnest lens in the world. Made from a crystal called molybdenum disulphide, the new lens is 2,000 thinner than a human hair and can revolutionize the field of nanotechnology. (Photo : Gerd Altmann | Pixabay)

A team of Australian scientists said they have developed the thinnest lens in the world. The new 6.3-nanometer lens, which is 2,000 times thinner than a human hair, can lead to novel advances in medicine and science which could revolutionize nanotechnology.

Putting that in perspective, the previous thinnest lens was 50 nanometers thick. The new world’s thinnest lens was created by a team of scientists lead by The Australian National University’s Dr. Yuerui ‘Larry’ Lu.

Continue reading “World’s Thinnest Lens Could Revolutionize Nanotechnology” | >

Abstract: Since the 17th century, science was intrigued by the nature of light. Isaac Newton was certain that it consists of a stream of particles. His contemporary Christiaan Huygens, however, argued that light is a wave. Modern quantum physics says that both were right. Light can be observed both as particles and as waves — depending which characteristic is measured in an experiment, it presents itself more as one or the other. This so-called wave-particle dualism is one of the foundational principles of quantum physics. This questions our common sense: can one and the same indeed be of two contradictory natures at the same time?

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Futurist Ray Kurzweil talks with StarTalk Radio’s Neil DeGrasse Tyson about the expansion of the human brain that he predicts will happen in the 2030’s.

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