A New Super Sensitive Explosive Detector

Scientists have developed a new explosives detector with incredible sensitivity and a range of up to 100 meters that could save lives and thwart the efforts of terrorists.
The detector, developed by a team of researchers at Oak Ridge National Laboratory, is based on photo-induced acoustic spectroscopy (PIAS).
Using PIAS, the military and law enforcement agencies will have an instrument that is one-tenth the size of competing products.
At five pounds, it is one-fifth the weight and is about one-fifth the cost of the competition.
It works by illuminating the suspected explosive with an eye-safe laser and allowing the scattered light to be detected by a quartz crystal tuning fork.
After a series of subsequent steps, the instrument is able to identify a number of explosives without jeopardizing the safety of the operator.
Funding for research work into the development of the instrument was provided by the Department of Energy's Office of Nonproliferation Research and Development and the Office of Naval Research.

Andy Murray crashes out of Wimbledon

Andy Murray vowed to return to Wimbledon a better player next year after Andy Roddick ended his hopes of being a first Briton in the men's final since 1938 with a clinical masterclass of power serving and variation in pace.
Murray hit more winners than Roddick, more aces, and made fewer unforced errors, but was cut down in front of a shellshocked Centre Court crowd 6-4 4-6 7-6 7-6 by the American sixth seed, who now faces Roger Federer for the third time in a Wimbledon final on Sunday.
Murray, the third seed and warm favourite to progress from Friday's semi-final, said he would not dwell on the unexpected defeat and would look to grind out his first grand slam success at the U.S. Open later in the year.
"I'll move on very, very quickly and go and work on my game and improve and come back stronger," said Murray, who was bidding to become the first British man to hold aloft the Challenge Cup since Fred Perry in 1936.
"That's a pathetic attitude to have, if you lose one match and you go away and let it ruin your year.
"I've had a very good year so far. I'm very close to the top of the game," said the 22-year-old Scot, who has won four titles this year including the grass warm-up event at Queen's Club and the Masters Series title in Miami.
Murray held a 6-2 career record against Roddick going into Friday's match, including a straight sets win over the American here in 2006, but Roddick executed his gameplan to perfection, subtly varying the pace, hitting deep corners with relentless regularity and advancing to the net with great effect.
"If someone serves 130 miles an hour consistently throughout the match, and above, it's very tough to break them, especially on a court like this that's quick.
"You always expect your opponents to play well, especially at this stage of the tournament. And he served great. Served really, really well in the tiebreaks. I think he maybe missed two first serves."
Murray will now take a five-week break from tournament competition before focusing on the American hardcourt swing, culminating in the Aug 31-Sept 13 U.S. Open, an event which has held a special place in his heart since winning the junior title there in 2004.
"The U.S. Open I've always said is my best surface, my best chance to win a slam, and I'll give it my best shot there."