Taking Nature's Cue For Cheaper Solar Power

Solar cell technology developed by Massey University’s Nanomaterials Research Centre will enable New Zealanders to generate electricity from sunlight at a 10th of the cost of current silicon-based photo-electric solar cells.

Dr Wayne Campbell and researchers in the centre have developed a range of coloured dyes for use in dye-sensitised solar cells.

The synthetic dyes are made from simple organic compounds closely related to those found in nature. The green dye Dr Campbell (pictured) is synthetic chlorophyll derived from the light-harvesting pigment plants use for photosynthesis.

Other dyes being tested in the cells are based on haemoglobin, the compound that give blood its colour.

Dr Campbell says that unlike the silicon-based solar cells currently on the market, the 10x10cm green demonstration cells generate enough electricity to run a small fan in low-light conditions – making them ideal for cloudy climates. The dyes can also be incorporated into tinted windows that trap to generate electricity.

He says the green solar cells are more environmentally friendly than silicon-based cells as they are made from titanium dioxide – a plentiful, renewable and non-toxic white mineral obtained from New Zealand’s black sand. Titanium dioxide is already used in consumer products such as toothpaste, white paints and cosmetics.

“The refining of pure silicon, although a very abundant mineral, is energy-hungry and very expensive. And whereas silicon cells need direct sunlight to operate efficiently, these cells will work efficiently in low diffuse light conditions,” Dr Campbell says.

“The expected cost is one 10th of the price of a silicon-based solar panel, making them more attractive and accessible to home-owners.”

The Centre’s new director, Professor Ashton Partridge, says they now have the most efficient porphyrin dye in the world and aim to optimise and improve the cell construction and performance before developing the cells commercially.

“The next step is to take these dyes and incorporate them into roofing materials or wall panels. We have had many expressions of interest from New Zealand companies,” Professor Partridge says.

He says the ultimate aim of using nanotechnology to develop a better solar cell is to convert as much sunlight to electricity as possible.

“The energy that reaches earth from sunlight in one hour is more than that used by all human activities in one year”.

The solar cells are the product of more than 10 years research funded by the Foundation for Research, Science and Technology.

Bermuda Triangle

You won't find it on any official map and you won't know when you cross the line, but according to some people, the Bermuda Triangle is a very real place where dozen of ships, planes and people have disappeared with no good explanation. Since a magazine first coined the phrase "Bermuda Triangle" in 1964, the mystery has continued to attract attention. When you dig deeper into most cases, though, they're much less mysterious. Either they were never in the area to begin with, they were actually found, or there's a reasonable explanation for their disappearance.

Bermuda Triangle Image Gallery

The Bermuda Triangle covers roughly 500,000 square miles in the Atlantic Ocean. See more pictures of the Bermuda Triangle.

Does this mean there's nothing to the claims of so many who have had odd experiences in the Bermuda Triangle? Not necessarily. Scientists have documented deviations from the norm in the area and have found some interesting formations on the seafloor within the Bermuda Triangle's boundaries. So, for those who like to believe in it, there is plenty fuel for the fire.

In this article, we'll look at the facts surrounding what we do know about the area as well as some of the most commonly-recited stories. We'll also explore the bizarre theories like aliens and space portals as well as the mundane explanations.

Many think of the Bermuda Triangle, also known as the Devil's Triangle, as an "imaginary" area. The U. S. Board of Geographic Names does not recognize the Bermuda Triangle and does not maintain an official file on it. However, within this imaginary area, many real vessels and the people aboard them have seemingly disappeared without explanation.

The Bermuda Triangle is located off the Southeastern coast of the United States in the Atlantic Ocean, with its apexes in the vicinities of Bermuda, Miami, Florida, and San Juan, Puerto Rico. It covers roughly 500,000 square miles.

The area may have been named after its Bermuda apex since Bermuda was once known as the "Isle of Devils." Treacherous reefs that have ensnared ships sailing too close to its shores surround Bermuda, and there are hundreds of shipwrecks in the waters that surround it.

The Devils' Sea Image courtesy NASA Miyake Island, Japan The Devil's Sea, also called the Formosa Triangle, is located off the coast of Japan in a region of the Pacific around Miyake Island, about 110 miles south of Tokyo. Like the Bermuda Triangle, the Devil's Sea doesn't appear on any official maps, but the name is used by Japanese fishermen. The area is known for strange disappearances of ships and planes - at least by those in the United States. Another myth is that, like the Bermuda Triangle, the Devil's Sea is the only other area where a compass points to true north rather than magnetic north (more about this later). One popular theory is that volcanic activity around the area, particularly an underwater volcano, could be responsible for the disappearances.

What's the Mystery?
Over the past 100 years, the Bermuda Triangle has seen what some say is a significant and inordinately high number of unexplained disappearances of planes, ships and people. Some reports say that as many as 100 ships and planes have been reported missing in the area and more than 1,000 lives have been lost. The U.S. Coast Guard, however, maintains that the area does not have an unusual number of incidents.

In 1975, Mary Margaret Fuller, editor of "Fate" magazine, contacted Lloyd's of London for statistics on insurance payoffs for incidents occurring within the Bermuda Triangle's usually accepted boundaries. According to Lloyd's records, 428 vessels were reported missing throughout the world between 1955 and 1975, and there was no greater incidence of events occurring in the Bermuda Triangle than anywhere else in the world.

Image courtesy Amazon

Gian J. Quasar, author of "Into the Bermuda Triangle: Pursuing the Truth Behind the World's Greatest Mystery" and curator of Bermuda-triangle.org, argues that this report "is completely false." Quasar reasons that because Lloyd's does not insure small crafts like yachts and often doesn't insure small charter boats or private aircraft, its records can't be the definitive source. He also states that the Coast Guard's records, which it publishes annually, do not include "missing vessels." He requested data on "overdue vessels" and received (after 12 years of asking) records of 300 missing/overdue vessels for the previous two years. Whether those vessels ultimately returned is unknown. His Web site has a list of these vessels.

The National Transportation and Safety Board (NTSB) database indicates (according to Gian J. Quasar) that only a handful of aircraft have disappeared off the New England coast over the past 10 years, while over 30 have occurred in the Bermuda Triangle.

The mystery of the Triangle probably took hold with the first well-publicized disappearance in 1945, when five Navy Avengers disappeared in the area. The cause of the disappearance was originally "pilot error," but family members of the pilot leading the mission couldn't accept that he had made such a mistake. Eventually they convinced the Navy to change it to "causes or reasons unknown."

Is Insurance Higher in the Bermuda Triangle?According to Norman Hooke, who conducted marine casualty studies for Lloyd's Maritime Information Services, based in London, "The Bermuda Triangle does not exist." He instead says that disappearances in the Triangle are typically weather-related. So despite the theories of why ships and planes disappear in the area, insurance premiums are no higher than for any other area of the ocean.

The myth gained momentum after reporter E.V.W. Jones compiled a list of "mysterious disappearances" of ships and planes between the Florida coast and Bermuda. Two years later, George X. Sand wrote an article for "Fate" magazine, titled "Sea Mystery at our Back Door." The article was about a "series of strange marine disappearances, each leaving no trace whatever, that have taken place in the past few years" in a "watery triangle bounded roughly by Florida, Bermuda and Puerto Rico."

As more incidents occurred, the reputation grew and past events were reanalyzed and added to the legend. In 1964, "Argosy Magazine" gave the triangle its name in an article titled "The Deadly Bermuda Triangle" by Vincent Gaddis. Argosy magazine's tagline a "magazine of master fiction," but that did nothing to halt the spread of the myth. More articles, books, and movies have appeared, suggesting theories ranging from alien abductions to a giant octopus.