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Unbelievable achievement in developing of super sensitive Electronic Nose
In the year 2016, on July 4th, the researchers from the University of Leuven located in the city of KU Leuven in Belgium developed a sensitive Electronic Nose with Metal-Organic Frameworks (MOFs) that can detect nerve gas at even very low concentrations. It can even detect pesticides. In the year 1982, the sensor technology of artificial olfaction was invented of the first gas multi-sensor array. Propositions in aroma-sensor technology, electronics, biochemistry and artificial intelligence made it possible to evolve devices capable of calculating and identifying elusive aromas released from a multitude of sources for multifarious applications. These instruments, known as electronic noses, were organized to copycat the mammalian olfactory system within a device designed to obtain repeatable calculations, allowing recognition and collocation of aroma mixtures while terminating operator fatigue. Contrary with other scientific devices, these devices allow the recognition of mixtures of organic samples as a whole without having to recognize individual chemical species within the sample mixture.
Metal-Organic Frameworks
The MOFs are like imperceptible sponges. They can soak up quite a lot of gas into their microscopic pores. Using this Metal-Organic Frameworks (MOF), researchers built a very sensitive electronic nose that can measure nerve gas at low concentrations.
Role of Aroma in Human Society
The sensitivity of aroma has played a crucial role in human advancement and bio-social interactions. Consequently, the olfactory impression has become a key aspect in the advancement of many profit-making industries that calculating the odour properties of their manufactured goods in order to advance product appeal, aspect, and firmness so that customers quickly recognize with individual brands having unique scents. A large diversification of examples ranging from the bouquet of liquors, perfumes and colognes added to personal health-care products, and scents used to product packaging are obvious archetype professed the significance of aroma qualities in industrial manufacturing and commercial trade. Likewise spices have been used throughout human history to improve the essence of foods and scent the air with aromatic potpourris. Undeniably, spices were once among the most admired assets for trade in primitive times and examined adequately valuable alone to justify the opening of new economical trade paths across the globe. Thus, aroma aspect has committed excessively to the price and appeals of many economical products, and has hugely resolute what customers are willing to pay for many manufactured goods.
Disadvantages of using Electronic Nose
The following are the disadvantages of electronic nose:
- Sensing include various difficulties with reproducibility, recovery, negative effects of humidity and temperature on the sensor responses.
- Unable to identify each chemical species with sample gases.
- Artificial noses can’t able to completely replace complex analytical equipment or odor panels for all applications, but offer quick real-time detection and discrimination solutions for applications requiring perfect, fast and repeated measurements. Such applications are becoming highly common and required for highly-mechanized industrial manufacturing processes.
Summary
An electronic nose enable of classifying or distinguishing any gas sample type with high capacity and for all possible applications has not as yet been developed. This truth is largely due to the selectivity and sensitivity limitations of e-nose sensor arrays for specific analytic gases. Electronic noses are not developed to be globally approved sensor systems for every earthly gas-sensing application nor are they enable of serving every possible analytical necessity. Thus, the appropriateness of an artificial nose for a specific device is highly dependent on the required operating conditions of the sensors in the varieties and the composition of the analytic gases being examined. An artificial nose with distinguished sensor varieties that is differentially responsive to a wide divergence of possible analytic has a number of conveniences over time-honored analytical devices. Artificial nose sensors do not need chemical reagents; have good sensitivity and exactitude, provide rapid results, and allow non-destructive sampling of odourants. Electronic noses have far greater capability to be used eventually by unskilled customer for innumerable practical applications in residential and public settings.
