National Workshop on Polymeric Sensors 2005 (NWPS 2005)
|Event Date/Time: Jul 25, 2005||End Date/Time: Aug 06, 2005|
|Registration Date: Jul 25, 2005|
|Early Registration Date: Jun 20, 2005|
In any sensor the sensing process can be divided into two parts, recognition which results in selectivity and amplification which increases the usually power of the weak signal to the level at which it can be conveniently manipulated by electronics. The selectivity is the heart of the design in all sensors. It is invariably provided by a material which some selective interaction of species of interest takes place which results in the change of some physical parameters such as electrical current or potential or conductivity, intensity of light, mass, temperature etc. One of the main reasons for the interest in polymers based sensor, because polymer exhibit full range of properties from insulator to superconductor depending upon the chemical modification. Particularly conducting polymers possess specific advantages such as high packing density, possibility of controlling shape and can be utilized for several functions such as switching storage, logic and as immobilization matrices for bio-molecules etc. On the other hand the utility of insulating polymers in sensor technology arises from the fact that they exhibit persistent polarization and surface charge, which remain stable for a long time. In general when a polymer subjected to pressure wave, thermal wave, mechanical distortion, light wave, voltage pulse or chemical disturbance, produces signal in the external circuit. It can therefore be used to sense temperature, pressure, light, sound, bio-molecules as well as electronic signal.
Earliest applications of polymeric sensors in xerography and electro-thermography as light and temperature sensors, heat scanners and micro-calorimeters, floor sensors, impact sensors, gas sensor and biosensors. Recently the use of polymeric electrets has been suggested for biomedical applications such as replacement of heart valve, bone implants and artificial muscles in robotic paradigm. Such developments have thrown new challenges in polymer electrets sensor material research.
The research on polymeric sensors is being carried out at different scales at in India and abroad. Polymeric sensor technology is still in the early stage of development. Only a few organizations have long term expertise in this area in India (NPL, NCl, IIT,S, BARC etc) . Research on polymeric sensor is being pursued very vigorously at leading institutions in Japan, USA and Europe. The polyaniline, polypyrrole etc are the most promising material for biosensors. But polytetrafluroethylene (PTFE), PVDF etc are the material for polymeric electret sensor followed by electret condenser microphone (ECM) technique.
In the last few decades, efforts have been directed towards the development of practical polymeric sensor both by academic and commercial sectors. As for as polymer electret sensors are concerned, various products have been commercialized. However, not much work has been reported in the field of biosensors. Yellow springs instruments introduced the first biosensor product in the market for estimation of glucose, lactate and alcohol, etc. a pen style device was launched in 1987 by Medisene, developed by Turners groups at cranfield in collaboration with researcher at the university of oxford for glucose monitoring. National physical Laboratory, India has also patented a glucose sensor based on amperometric method. The technology of this first Indian polymeric biosensor sensor has been transferred to three companies in India. The process of recovering product development cost is found to be uneconomic. This is the hurdle that the industry has faced in the last few years.
The workshop will deal with systematic lectures directly involved in polymer research and development of sensors. It would cover the basic properties of polymers and their application in development of sensors. The deliberation would be designed according to participants, irrespective of the background discipline. The essential feature of polymeric sensors like construction, properties, operation with computer programming and application are to be particularly discussed. Further efforts would be made to highlight some of the trends that rule the research and developments of the important sensors that are likely to accelerate the growth of sensor industry.
The workshop would convey the messages to the young scientists that in the recent history of polymer sensors, a plethora of mistakes have been made in understanding the complexity of the technology involved in such a concept vis-à-vis a definite low penetration of this technology into instrumentation. The participant shall have an additional advantage to discuss various aspects pertaining to food industry, telecommunication industry, environment and health care. Newer techniques have been developed, however, the same has not percolated to the level of college and university. Therefore, we feel it that it is absolutely necessary to bring the participant face to face with those who have worked in these areas and have acquired a competence. This workshop shall go along way to create awareness for future technology based on polymers. This may be of paramount importance to educate and trend the young scientists.
The workshop will aim to introduce the participant to the development of polymeric material for sensors, their characterization and instrumentation of sensor device and sensor applications. The participants of the workshop will be exposed to the basic knowledge on all aspects of sensor and will be motivated to take up future collaborative projects in collaboration with experience in research laboratories/ private agencies. With the advent of development and research personnel with experience and knowledge are available in this country. There lecture shall be arranged for the benefit of the participant and further they will be exposed to the recent technology which have been taken up in developed country specially USSR and USA. It is not the invention of new machinery but new ideas move the world. This workshop aims at motivating the young scientist and encouraging intra-and inter-institutional access to core and shared facilities to foster interdisciplinary and research collaboration.
Polymeric sensors shall enhance the quality control in industrial processes; point of care measurement systems will be feasible. Those polymeric sensors have to be developed for the specific purposes. Sensor is referred to a device, which provides direct information about the chemical composition of its environment. The polymeric sensors are rapidly evolving from physics, chemistry, biology, electronics and information technology. There is an urgent need of the polymer-based sensor for medical diagnostic industry, environmental monitoring, food industries and telecommunication industry.
The objective of the workshop is to introduce the participant to the development of polymeric material for sensors, their characterization and instrumentation of sensor device and sensor applications. The participants of the workshop will be exposed to the basic knowledge on all aspects of sensor and will be motivated to take up future collaborative projects in collaboration with experience in research laboratories/ private agencies.