Specific features of the temperature dependence of tryptophan fluorescence lifetime in the temperature range of −170–20 °C

Chlorine n.q.r, in 2,6-dichlorophenol has been investigated at temperatures from 77 K to room temperature. Two resonance lines due to chemically inequivalent sites have been observed throughout this temperature range. Torsional frequencies of the molecule have been calculated at temperatures from 77 to 300 K according to Bayer's theory and Brown's method. Also the temperature coefficients of the torsional frequencies have been calculated.

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PSEUDO-GAP FEATURES OF INTRINSIC TUNNELING IN (HgBr2)-Bi2212 SINGLE CRYSTALS

International Journal of Modern Physics B ◽

10.1142/s0217979299003878 ◽

1999 ◽

Vol 13 (29n31) ◽

pp. 3758-3763 ◽

Cited By ~ 54

Author(s):

AUGUST YURGENS ◽

DAG WINKLER ◽

TORD CLAESON ◽

SEONG-JU HWANG ◽

JIN-HO CHOY

Keyword(s):

Temperature Dependence ◽

Single Crystals ◽

Room Temperature ◽

Unit Cell ◽

Superconducting Gap ◽

Axis Direction ◽

Temperature Range ◽

Dynamic Conductance

The c-axis tunneling properties of both pristine Bi2212 and its HgBr 2 intercalate have been measured in the temperature range 4.2-250 K. Lithographically patterned 7-10 unit-cell heigh mesa structures on the surfaces of these single crystals were investigated. Clear SIS-like tunneling curves for current applied in the c-axis direction have been observed. The dynamic conductance d I/ d V(V) shows both sharp peaks corresponding to a superconducting gap edge and a dip feature beyond the gap, followed by a wide maximum, which persists up to a room temperature. Shape of the temperature dependence of the c-axis resistance does not change after the intercalation suggesting that a coupling between CuO 2-bilayers has little effect on the pseudogap.

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The Design of AlGaN/GaN HEFT-Micro-Accelerometer and Temperature- Dependence Electrical Performance

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.483.174 ◽

2011 ◽

Vol 483 ◽

pp. 174-179 ◽

Cited By ~ 1

Author(s):

Ting Liang ◽

Jian Jun Tang ◽

Qian Qian Zhang ◽

Yong Wang ◽

Jing Li ◽

...

Keyword(s):

Temperature Dependence ◽

Electrical Performance ◽

Saturation Current ◽

Temperature Range ◽

Different Temperatures ◽

Piezoresistance Coefficient ◽

Micro Accelerometer

In this paper, We use a novel principle to detect acceleration and report how I-V characteristics and piezoresistance coefficient of AlGaN/GaN HEFT-micro-accelerometer are affected by setting different temperatures. It is shown that saturation current of device would go down if the temperature goes up, which is about 0.028mA/°C, based on the research. However, the device can work well at the temperature range of -50°C to 50°C, which indicates that it can work safely in the larger temperature range.

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NQR and Crystal Structure of 4,5-Dichloroimidazole, C3H2N2Cl2

Zeitschrift für Naturforschung A ◽

10.1515/zna-1992-1-231 ◽

1992 ◽

Vol 47 (1-2) ◽

pp. 177-181 ◽

Cited By ~ 4

Author(s):

Shi-Qi Dou ◽

Alarich Weiss

Keyword(s):

Crystal Structure ◽

Phase Transition ◽

Temperature Dependence ◽

Room Temperature ◽

Unit Cell ◽

Space Group ◽

Temperature Range ◽

Temperature Coefficients ◽

Group D

AbstractThe two line 35Cl NQR spectrum of 4,5-dichloroimidazole was measured in the temperature range 77≦ T/K ≦ 389. The temperature dependence of the NQR frequencies conforms with the Bayer model and no phase transition is indicated in the curves v ( 35Cl)= f(T). Also the temperature coefficients of the 35Cl NQR frequencies are "normal". At 77 K the 35Cl NQR frequencies are 37.409 MHz and 36.172 MHz and at 389 K 35.758 MHz and 34.565 MHz. The compound crystallizes at room temperature with the tetragonal space group D44-P41212, Z = 8 molecules per unit cell; at 295 K : a = 684.2(5) pm, c = 2414.0(20) pm. The relations between the crystal structure and the NQR spectrum are discussed.

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