Nanotechnology in Defence applications
Published on: Mar 3, 2016
Transcripts - Nanotechnology in Defence applications
Applications of Nanotechnology in Defense and Military Helicopters Aeronautics Defence Electronics Space Defence Systems EnergySubmitted To: Presented by:Dr A.K.V , Reader Zaahir SalamCentre of Nanoscience and Technology M.Tech NS&T.
If I die in combat zone Box me up and Send me home Pin my medals to my chest Tell my mom I did my best.“We Salute all those men who have sacrificed there lives for protecting over country and keeping us safe”
Nanotechnology: key enabling factor to advanced systems development System of Systems d b le Systems Ena s o tem an ys N S Platforms d ble Sensors and Ena es o vic Equipment N an DeSubassemblies & ls and Devices ia er s at ie M gComponents o olo an n N ch Te
Nanotechnology In National Defense Nanotechnology Research in the following areas can help the military Fabrics/Materials Armor. Withstand Extreme Conditions. Robotics Security Weapons Detection Defense Development Vehicles • Fuel Economy • Soldier Protection • Stealth movement Millitary Personnel health • Medicine • Diagnosis.
Fabrics and Materials The Institute of Soldier Nanotechnologies is a research center founded through a US Army Research Office Contract with MIT. The Goal of this center is to create a lightweight and comfortable, high tech battlesuit for the modern soldier. They Imagine That nanotechnology will help them create, “a bullet resistant jumpsuit, no thicker than ordinary spandex, that monitors health , eases injuries, communicates automatically, and reacts instantly to chemical and biological agents.
Waterproof & Bullet Proof Vests Developed by Prof. Karen Gleason. She and her researchers were able to create ultra hydrophobic surfaces( water proof) using a technique called Chemical Vapour Deposition(CVD). With CVD they could deposit nanolayers of Teflon on kevlar panels the material used to make bullet proof vests. Army Outer Tactial Vest
Nature’s Armor MIT Professor Christine Ortiz is taking a cue from nature in developing materials to protect the modern soldier. Using a SEM, Prof. Ortiz and her students were able to examine the nanostructure of the scales of the Senegal bichir or the dinosaur eel, a species that has been able to survive enemy attacks for over 96 million years. The four layers of the scales dissipate the energy of a strike, protect the soft tissue beneath the scales, and also prevent the spread of fractures within the scale.
An Invisible Cloak Though far from becoming a reality, researchers are making strides in optical negative index metamaterials (NIM) to make objects invisible. Metamaterials are typically man-made to have properties that cannot be found in nature. Optical NIM have the ability toto bend light in ways different from conventional materials. Professor Vladimir Shalaev at Purdue University is Studying nanostructured composites to create these metamaterials. These Structures also have applications in microscopes, circuits and antenna.
Chemical and Biological Warfare Chemical: Mustard gas, Phosgene, Chlorine, Sarin. World War I and since also been used in acts of terrorism. Biological : anthrax, Ebola virus , Brucella. Examples: poisoned tipped arrows of antiquity to the letters containing anthrax spores after september 11, 2001 attacks. Both: Toxins like Botulinum neurotoxin and ricin which are produced by living organisms.
How to Defend from Chemical or Biological attack According to study of DARPA, key sensor metrics are: Sensitivity. Probability of correct detection. False positive rate. Response time. Vary according to perceived threats levels and mission objectives. Other attributes affect the sensor utility for missions: Power consumption, reliability, maintenance/ logistics, as well as form factors like size, weight and shape.
Nanosensors Small Size , light weight, and large reactive surface area. Engineered nanostructures have shown to improve: by orders of magnitude: Sensitivity, Selectivity, and Response time of sensor technology( thereby providing an advantage over slower, more costly laboratory based analytical methods). Reduce size weight and power requirements of resulting monitoring devices. Detection of multiple chemical species: Conventional chemical sensors are optimized to detect a single chemical- some nanosensor designs are capable of detecting a target chemical amongst multiple chemical species because they allow for numerous sensors within a single monitoring device.
Each nanosensor is chemically coated or decorated with functional groups that can recognize a specific chemical and biological agent. NASA Nanosensor: Jing Li, physical scientist at NASA ’s Ames Research Centre developed an I phone chemical sensor. With 64 nanosensors, it can detect airborne chemicals including ammonia, methane and chlorine gas. Cell phone owners could use their phone ’s GPS to provide sensor location information to emergency operation centers. One goal of the Cell- all program is to “crowd-source” human safety- anywhere a threat breaks out, authorities are notified , and if more people have sensors, it makes it easier for first responders to distinguish false positives from the true threats.
Bio-inspired Nanosensors In August 2010, DARPA awarded $6.3 million grant to Radislav Potyrailo and his team at GE Global Research ’s Chemical and Biological Sensing Laboratory to develop sensors inspired by chemical sensing nanostructures found on the scales of the wings of the Morpho Butterfly. The left set of wings on the morpho butterfly has been exposed to the liquids ethanol (forewing)and toulene (hindwing). Change in color is seen. The group uses nanophotonics depicted in the bottom figure to selectively detect numerous gases with a single sensor rather than an array of sensors.
Smart Fabrics IMAGINE UNIFORMS THAT CAN DIAGNOSE AND TREAT A SOLDIER IN THE FIELD, “NO DOCTOR NEEDED”. Professor Joseph Wang at the University of California at San Diego has developed method for screen printing sensors on the waistband of underwear. On the waist band, the sensors is in close contact to the skin where it can monitor biomarkers in the sweat of the person wearing the underwear.
Electric Nose Kenneth Suslick, Professor of Chemistry at the University of Illinois at Urbana- Champaign, and his collaborators have developed hand held sensor that can be used to differentiate 19 different toxic industrial chemicals. Similar to the smelling response of mammals, distinguishing one chemical from a composite response of many sensors rather than the response of single chemical sensor. The array is comprised of diverse set of nanoporous pigments with colors that are changed by chemical reactions with the smelled chemical.
Warships The U.S Navy is getting a next- generation all electric warship with the help of researchers at the University at Buffalo, and it ’s expected to be ready by 2012. It ‘s predicted that this ship can be run by a crew of 100 people, much smaller than the thousands of people that run battleships in service now. The biggest problem is distributing power to the entire ship.
Conclusion ENDLESS POSSIBILITIES THAT NEED TO BE HARNESSED AND MADE INTO USE FOR THE BETTERMENT AND PROTECTION OF OUR SOLDIERS IN BATTLE FIELDS. BECAUSE “ THIS NATION WILL REMAIN THE LAND OF FREE ONLY ,SO LONG AS IT IS HOME OF THE BRAVE”