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Abstract

The temperature profiles of a rectangular thin film heated with a scanning strip heat source are calculated using the Green function. Two boundary conditions are considered. One has both upper and lower surfaces insulated and the other has the upper surface insulated with the lower surface maintained at constant temperature. When the length of thin film along the scanning direction is infinity and temperature reaches steady state, the effect of scanning speed and specimen thickness on the temperature profile is investigated. The result is applied to an A4 paper sheet. Both the temperatures of the upper and lower surfaces are affected by the scanning speed, Gaussian radius and absorption depth. The criterion of paper feed to avoid paper curling is proposed.

Fluxmetric and magnetometric demagnetizing factors for cylinders

“…[2] and 1D derivation in Ref. [7] share a common negative error for N f;m on the order of 1%, when g is between 10 and 1000. Moreover, after a careful inspection of the results calculated using the 1D model, we find that this model is applicable only for N f at w$0 and !…”

“…[2], and they can be chosen more symmetrically and uniformly with respect to w ¼ 0 according to the conjugate relations studied in Refs. [4,5]; (iv) Since some analytical results for low-and high-g limits are recently available [6,7], and some numerical calculations have been made systematically for w ¼ À1 [8], it will be interesting to make a careful comparison between these and our new results.…”

Current‐induced control of the electron–nuclear spin system in semiconductors on a micrometer scale

“…For each RF frequency, the RF excitation is always on during the measurements and the TRKR scanning was performed ten times, which totally takes around 10 min. Since the DNP formation time has been found to be about 10 min for three isotope species [29,31], it is expected that the DNP formation of each isotope is shorter than the total TRKR scanning time. For the measurements, the current amplitude through the microcoil was set to 30 mA.…”

“…In the first type of experiment, the Overhauser field is dynamically monitored by optically detecting the electron Larmor precession frequency by means of time-resolved Kerr rotation (TRKR) in n-GaAs [28][29][30]. By electrically generating a resonant RF magnetic field using an onchip microcoil, the nuclear field can be coherently manipulated [31,32].…”

The reduction of driving voltage in organic light-emitting devices by inserting step barrier layer

“…A layer of Gaq was inserted in between Alq 3 (or Bphen) and TBADN as step barrier. The LUMO (lowest unoccupied molecular orbital) of Gaq is 2.9 eV [12] which lies in between that of Alq 3 (3.1 eV) (or BPhen (3.0 eV)) [13] and TBADN (2.8 eV) [14], so a layer of step barrier can be formed from Alq 3 (or BPhen) though Gaq to TBADN. As a result, it is made feasible to improve electron injection and transport, so that the driving voltage can be decreased and the current efficiency of the device can be enhanced.…”