The study investigates the fabrication and characterization of an ethanol microsensor equipped with a heater. The ethanol sensor is manufactured using the commercial 0.18 µm complementary metal oxide semiconductor (CMOS) process. The sensor consists of a sensitive film, a heater and interdigitated electrodes. The sensitive film is zinc oxide prepared by the sol-gel method, and it is coated on t...

The design and fabrication of an ethanol microsensor integrated with a readout circuit on-a-chip using the complementary metal oxide semiconductor (CMOS)-microelectro -mechanical system (MEMS) technique are investigated. The ethanol sensor is made up of a heater, a sensitive film and interdigitated electrodes. The sensitive film is tin dioxide that is prepared by the sol-gel method. The heater ...

It is demonstrated how a commercially available MEMS thermopile infrared radiation sensor can be used as thermal conductivity gas detector (TCD). Since a TCD requires a heater while IR-thermopile sensors have no integrated heater, the thermopile itself is used as heater and temperature sensor at the same time. It is exposed to the measured gas environment in its housing. It is shown that, by us...

The first of these articles deals with oxide-coated cathodes designed to be loaded with current densities several times higher than ordinary oxide-coated cathodes can withstand, and which yet have a life of a few thousand hours. Although these new cathodes cannot rival the L type of dispenser cathode as regards their permissible current density, they are cheaper and have a lower operating tempe...

Measurements of nanoscale friction between silicon AFM tips featuring an in-situ solid state heater and silicon substrates (both with native oxide) were performed. The temperature of the heater was varied between room temperature and approximately 650 °C. For these temperatures and the silicon substrate, the temperatures at the point of contact are estimated to range from room temperature to ap...

A dual-probe heat pulse (DPHP) sensor is a robust tool that can measure soil thermal properties and associated physical processes. new DPHP based was developed to simultaneously properties, water content matric potential. series of experiments were performed evaluate the performance. The able each property with acceptable accuracy. accuracy potential determinations approximately 10% in log scal...

The goal of the inverse analysis is to find a set of heaters over some parts of boundary, called the heater surface, to satisfy the desired heat flux profile over the design surface. Micro-genetic algorithm is employed to inverse design of a radiant enclosure with absorbing-emitting medium. The direct problem of radiative heat transfer is solved by the discrete transfer method. The inverse prob...

Air flow through electric fan heater channel is governed by coupled, non-linear partial differential equations; these equations have to be solved within on irregular domain subject to various initial and boundary conditions. Computational Fluid Dynamics (CFD) replaces fluid flow equations by a set of algebraic equations, these algebraic equations can be solved using digital computers. Wall to a...

The substrate heater designed for this investigation is a front side substrate heating system. It consists of 10 conventional tungsten halogen lamps and an aluminum reflector, total input electrical power of 5 kW. The substrate is heated by means of a radiation from conventional tungsten halogen lamps directed to the substrate through a glass window. This design allows easy replacement of the l...

This article is devoted to the study of phenomenon superheating partially miscible mixtures having a lower critical solution temperature and thermal effect accompanying relaxation an unstable mixture, within framework problem high-density heat flux removal. The was carried out by using method controlled pulse heating platinum wire probe. characteristic time from 0.2 180 ms. degree mixture relat...