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Sol-Gel Processing of Energetic Materials, Lawrence Livermore National Labs.
T.M. Tillotson .
L.H. Hrubesh
G.L. Fox
ILL. Simpson
R.W. Lee
R.W. Swansiger
L.R. Simpson
Miniaturized ignition systems based on microfabrication techniques are appealing
due to their small size, integrated circuit (IC) compatibility, low energy consumption, and
inexpensive batch fabrication[1]. These micro-devices find applications to ignite smart
munitions and initiate at selected points.
Nanoenergetics, specifically nano-engineered thermites, exhibit unique
combustion performance and sensitivity characteristics that place them in a class of their
own. The main characteristic that sets them apart is the ability to tune their performance
and sensitivity from that of conventional propellants to high-explosives [2,3,4]. It is the
controllability of combustion properties that make them suitable for use in a wide range
of micro-devices applications
One useful characteristic of a versatile ignition source is the
ability to trigger it using CMOS circuits, thus opening the possibility for unique
applications by use of simultaneous, or sequential, triggering of the events with great
precision. This requires low-voltage and low-current operation of the device.
Originally posted by turbofan
There are several explanations as to why the mirco detonators were not sensitive to commonly use RF bands
1. The RF required to trigger these devices may have been outside of public frequency band.
2. The RF signal used as a carrier frequency is FM modulated with a specific code to activate a central
mircoprocessor, or even logic within the microdetonator. This is the same process used in your stereo
FM radios...it's not the carrier frequency that plays music on your radio - you cannot hear anything outside
of ~ 18 Hz - 20 KHz, it's the modulated signal you are listening to which has been amplified by your stereo
system.
Carrier signals that are used for cell phone, or SATCOM are in the Megahertz (MHz) to Gigahertz (GHz) ranges.
3. The devices may require an enable signal (coded) prior to use of the common carrier frequencies.
We do know that cell phone and communications were "knocked out" by the aircraft (or other means), and
this would open up remote RF antennas to transmit a trigger signal.edit on 4-11-2010 by turbofan because: quoting and format
We can fly men to the moon, the atomic bomb, wireless internet technology, the F-18 fighter
Originally posted by yyyyyyyyyy
We can fly men to the moon, the atomic bomb, wireless internet technology, the F-18 fighter and Echelon systems, and yet... somehow the OP could NEVER happen... well that sounds like a distinct lack of imagination of the part of people who disagree.
You would simply place the circuit in the specific location and walk away.
Originally posted by GoodOlDave
as all the engineers in FEMA and NIST paid off to make up a fake cover story. This HAS to be the way the towers were destroyed because "the explanation that fires can destroy a steel skyscraper is too silly to take seriously".
Of course.edit on 4-11-2010 by GoodOlDave because: (no reason given)
Originally posted by TrueFalse
dave (t)rolling again... and making up his stories...
Have i missed something or did the NIST Report fail to analyze how building 7 has collapsed. They have no scientific conclusion as to what has happend to Building 7 but im sure you can enlighten us. What the Fema Report has to do with this topic you would still have to explain.
The last sentence at least is true. Fire cant destroy steel framed buildings as we have seen in History, no matter how many diesel generators, gas pipes etc. explode, it is too silly to be taken seriously.
Open air burning temperatures: 287.5 °C (549.5 °F)
Flash point: > 38 °C (100.4 °F)
Autoignition temperature: 210 °C (410 °F)
Freezing point: < −47 °C (−52.6 °F) < −40 °C (−40 °F)
Open air burning temperatures: 287.5 °C (549.5 °F)
Density at 15 °C (59 °F): 0.775 kg/L - 0.840 kg/L
Specific energy > 42.80 MJ/kg
Originally posted by GoodOlDave
Originally posted by TrueFalse
dave (t)rolling again... and making up his stories...
Have i missed something or did the NIST Report fail to analyze how building 7 has collapsed. They have no scientific conclusion as to what has happend to Building 7 but im sure you can enlighten us. What the Fema Report has to do with this topic you would still have to explain.
Yes, you've missed quite a lot, apparently. It was FEMA that analyzed the collapse of towers 1 and 2. It was NIST that analyzed the collapse of WTC 7...and it's not a trick question as to why the FEMA report is relevent in a thread titled, "Igniting Nano Thermite without Detcord", guy.
The last sentence at least is true. Fire cant destroy steel framed buildings as we have seen in History, no matter how many diesel generators, gas pipes etc. explode, it is too silly to be taken seriously.
If you are basing this statement on your own experience in materials engineering or in fire prevention, or from analyzing the condition of the steel recovered from WTC 7, or even from questioning the witnesses who were there, then I will listen to what you have to say. If OTOH you're simply mindlessly quoting some sexy sounding drivel you saw in, "Loose Change", then you'll excuse me if I laugh out loud.
Before you put your foot in your mouth again, maybe you should actually READ the NIST report and familiarize yourself as to what it actually says, rather than guessing and making stuff up?