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008. SUCCESS READING MATCHING INFORMATION @Aslanovs Lessons



Welcome to Mr Aslanov’s Lessons 
QUESTION-TYPE BASED TESTS 
Aslanovs_Lessons 
MATCHING INFORMATION
 
Mini warm-up practice test 

Match information 
Tough Sensor Can Take the Heat 
A.
A new gas sensor made from a nickel's worth of materials can endure high temperatures, 
corrosion, vibrations, and exposure to water, according to its inventors at Argonne National Laboratory in 
Illinois. The tiny sensor detects a variety of gases.
B.
Conventional silicon sensors do not work well at temperatures above 150°F. But Argonne's new 
sensor, made of ceramics and metals, is not affected by high temperatures. "The materials in this sensor 
behave well through a wide range of temperatures," says Michael Vogt, a control systems engineer at 
Argonne.
C.
Vogt and his colleagues made the sensor by film screening layers of ceramic and metal on a 
ceramic substrate, then firing the sensor in an industrial oven at more than 1,000°C. The Argonne 
researchers set out to build a sensor that would detect overheating computer components. Before an 
overheating component fails, and possibly ignites, epoxy in the circuit boards release a gas. The Argonne 
sensor can detect this vapour and cut off power to the circuit.
D.
The device senses gases by applying a steadily increasing voltage across its electrical leads and 
monitoring current spikes induced as gases react on the sensor's surface. Each gas reacts at a characteristic 
voltage, and the size of the current spike indicates the "signature" of several representative organic solvents.
E.
The sensor could be used to monitor hydrocarbon emissions from cars; today's typical sensors can 
only measure oxygen. The sensor could also monitor gases in industrial chemical processes.

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