We present a useful framework within which we can understand some of the physical phenomena that drive thermal emission in 2D-periodic metallic photonic crystal slabs, emphasizing phenomenology and physical intuition. Through detailed numerical calculations for these systems, we find that periodicity plays a key role in determining the types of physical phenomena that can be excited. We identif...

S. Bruce, A. Trasser, M. Birk, A. Rydberg and H. Schumacher. Uppsala University, Box 534, S-751 21 Uppsala, Sweden. University of Ulm, Abt. EBS, D-89069 Ulm, Germany. Abstract A novel method for finding the thermal time constant of HBTs is proposed. It utilizes small signal measurements in the frequency domain of the typical negative differential resistance found in the active region, i.e., nor...

Thermal comfort is one of the basic human needs. There are many options for transforming primary energy sources into heat and, in our countries today, cold. The heat/cooling supply system needs to be optimised. criterion minimise final consumption heat, and emissions, including CO 2 , while ensuring individual thermal comfort.

The thermal conductivity of superconducting MgB 2 was studied in both the superconducting and normal state region. The latter is almost equally determined by the electronic-and the lattice thermal conductivity. In the superconducting state, however, the lattice thermal conductivity is larger. The electronic thermal conductivity below T c was derived from the experimental data considering the Ba...

— In consideration of a previous study for developing a next-generation sensible information display set, this paper proposes a development model of a more realistic type that is applied to user needs through an analysis of technology, trends, and patterns by needs analysis and development case research through a user survey. This is utilized in the creation of ideas and the preparation of a pr...

0038-1101/$ see front matter 2012 Elsevier Ltd. A http://dx.doi.org/10.1016/j.sse.2012.04.015 ⇑ Corresponding author. E-mail address: amit-kumar.sahoo@ims-bordeaux In this paper, a comprehensive evaluation of the transient self-heating in microwave heterojunction bipolar transistors (HBTs) have been carried out through simulations and measurements. Three dimensional thermal TCAD simulations hav...

The monitoring of heat flux is becoming more and more critical for many technologies approaching nanometric dimensions. Scanning Thermal Microscopy (SThM) is one of the tools available for thermal measurement at the nanoscale. This measurement technics needs calibration samples. Therefore, micro-hotplates made of platinum heater suspended on thin silicon nitride (SiN) membranes were fabricated ...

Understanding our customers’ needs and requirements and providing amazing solutions is part of METTLER TOLEDO’s corporate vision. For many years the cosmetics industry has relied on the competence and knowledge of our sales and support organization. Every day, thousands of laboratories and manufacturing sites use our pH meters, titrators, thermal analyzers, densitymeters, refractometers and bal...

Demands for higher outputs have been met by careful tailoring of steam turbines for both mechanical and electrical power generation to meet the needs of thermal efficiency and reliability at an econoinic cost. Major system components and the methods chosen for speed control are described. Important operational requirements are featured.

Temperature is a principle parameter that needs to be monitored and controlled in most food processing operations such as heating, cooling, drying and storage. Temperature sensors have been developed based on different temperature-dependent physical phenomena including thermal expansion, thermoelectricity, electrical resistance, and thermal radiation. Temperature sensors used in agricultural an...