scholarly journals Monazomycin-induced single channels. I. Characterization of the elementary conductance events.

1982 ◽  
Vol 80 (3) ◽  
pp. 403-426 ◽  
Author(s):  
O S Andersen ◽  
R U Muller

Monazomycin (a positively charged, polyene-like antibiotic) induces voltage-dependent conductance changes in lipid bilayer membranes when added to one of the bathing solutions. These conductance changes have generally been attributed to the existence of channels spanning the membrane. In this article we characterize the behavior of the individual conductance events observed when adding small amounts of monazomycin to one side of a lipid bilayer. We find that there are several apparent channel types with one or sometimes two amplitudes predominating. We find further that these fairly similar amplitudes represent two different states of the same fundamental channel entity, presumed to be the monazomycin channel. The current-voltage characteristics of these channels are weakly hyperbolic functions of applied potential. The average lifetimes are essentially voltage independent (between 50 and 400 mV). The average channel intervals, on the other hand, can be strongly voltage dependent, and we can show that the time-averaged conductance of a membrane is proportional to the average channel frequency.

2013 ◽  
Vol 415 ◽  
pp. 77-81 ◽  
Author(s):  
Muhammad Tahir ◽  
Muhammad Hassan Sayyad ◽  
Fazal Wahab ◽  
Dil Nawaz Khan ◽  
Fakhra Aziz

1991 ◽  
Vol 235 ◽  
Author(s):  
Ying Wu ◽  
W. Savin ◽  
T. Fink ◽  
N. M. Ravindra ◽  
R. T. Lareau ◽  
...  

ABSTRACTExperimental analysis and simulation of the formation and electrical characterization of TiSi2/+/p-Si shallow junctions are presented here. The formation of shallow n+-p junction, by ion implantation of As through Ti films evaporated on p-Si substrates followed by Rapid Thermal Annealing (RTA) and conventional furnace annealing has been performed in these experiments. Structural techniques such as Secondary Ion Mass Spec-troscopy (SIMS) and Rutherford Backscattering (RBS) experiments have been employed to characterize these devices. RUMP simulations were used to analyze and interpret the RBS data. Current-voltage characteristics have been simulated using PISCES simulator.


2006 ◽  
Vol 346 (1) ◽  
pp. 288-292 ◽  
Author(s):  
Toru Ide ◽  
Takaaki Aoki ◽  
Yuko Takeuchi ◽  
Toshio Yanagida

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
S. Çetinkaya ◽  
H. A. Çetinkara ◽  
F. Bayansal ◽  
S. Kahraman

CuO interlayers in the CuO/p-Si Schottky diodes were fabricated by using CBD and sol-gel methods. Deposited CuO layers were characterized by SEM and XRD techniques. From the SEM images, it was seen that the film grown by CBD method is denser than the film grown by sol-gel method. This result is compatible with XRD results which show that the crystallization in CBD method is higher than it is in sol-gel method. For the electrical investigations, current-voltage characteristics of the diodes have been studied at room temperature. ConventionalI-Vand Norde’s methods were used in order to determine the ideality factor, barrier height, and series resistance values. It was seen that the morphological and structural analysis are compatible with the results of electrical investigations.


2019 ◽  
Vol 970 ◽  
pp. 75-81
Author(s):  
Alexey Zavgorodniy ◽  
Aitbek Aimukhanov ◽  
Assylbek Zeinidenov ◽  
Galina Vavilova

The role of spin states in the process of charge carrier transport in copper phthalocyanine (CuPc) nanowires has been established. According to the data obtained, CuPc nanowires are in the η-phase. The current-voltage characteristics (IVC) of a photosensitive cell based on CuPc nanowires in a magnetic field are investigated. As a result of experiments, it was found that applying an external magnetic field, the spins of two positively charged polarons are oriented in one direction. The channel of formation of the bipolaron is blocked. As a result, a decrease in the short-circuit current of the photosensitive cell is observed by more than 61%.


2009 ◽  
Vol 24 (10) ◽  
pp. 3018-3022 ◽  
Author(s):  
Yun-Ze Long ◽  
Jean-Luc Duvail ◽  
Qing-Tao Wang ◽  
Meng-Meng Li ◽  
Chang-Zhi Gu

In order to study the electronic properties of conjugated polymer nanowire junctions, we have fabricated two devices consisting of two crossed poly(3,4-ethylenedioxythiophene) (PEDOT) nanowires with platinum microleads attached to each end of each nanowire. We find that the junction resistance of the crossed nanowires is much larger than the intrinsic resistance of the individual PEDOT nanowire, and increases with decreasing temperature, which can be described by a thermal fluctuation-induced tunneling conduction model. In addition, the crossed junctions show linear current-voltage characteristics at room temperature.


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