نتایج جستجو برای: thermal vacuum testing
تعداد نتایج: 592741 فیلتر نتایج به سال:
The previously developed algebraic lightfront holography is used in conjunction with the tensor splitting of the chiral theory on the causal horizon. In this way a universal area law for the entanglement entropy of the vacuum relative to the split (tensor factorized) vacuum is obtained. The universality of the area law is a result of the kinematical structure of the properly defined lightfront ...
A special type of iterative learning control (ILC) problem is considered. Due to the insu$cient measurement capability in many real control problems such as Rapid Thermal Processing (RTP), it may happen that only the terminal output tracking error instead of the whole output trajectory tracking error is available. In the RTP chemical vapor deposition (CVD) of wafer fab. industry, the ultimate c...
A simple method for transistor DC parameter extraction is presented, where the self-heating of the transistor is taken into account. The thermal behaviour of the transistor is modelled using a single thermal resistance, whose value is extracted simultaneously with the electrical parameters. When pulsed measurements are performed the usage of the thermal resistance, as an effective thermal resis...
We report direct imaging of nanoscale thermal transport in single and few-layer graphene with approximately 50 nm lateral resolution using high vacuum scanning thermal microscopy. We observed increased heat transport in suspended graphene where heat is conducted by ballistic phonons, compared to adjacent areas of supported graphene, and observed decreasing thermal conductance of supported graph...
Three different approaches to detecting hydrogen in helium streams were assessed: thermal conductivity, atmospheric sampling using a mass spectrometer, and permeation through a palladium/silver membrane. The thermal conductivity detection system utilized an assembly of four cells fitted with filaments wired to make a Wheatstone bridge. Pure helium flowed through two of the cells. Helium contain...
Rapid and reliable assessment of volatile and semivolatile organic compounds in the environment using gas chromatography sGCd is often limited by cost of analysis, and time delays between sampling and analysis. Many environmental monitors incorporating GC systems are too large for portability, and lack sufficient sensitivity and/or selectivity to serve as practical environmental monitors. Frequ...
Lead selenide films are prepared by the vacuum evaporation technique on clean glass substrates held at room temperature in a vacuum 10 torr. The thickness of the film is measured by employing quartz crystal monitor technique. EDAX analysis confirms the composition of constituent in the PbSe thin films. The electrical resistivity measurements as a function of temperature in the range 303 K 483 K...
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