scholarly journals Atomistic Characterization of Gramicidin Channel Formation

Author(s):  
Delin Sun ◽  
Stewart He ◽  
W. F. Drew Bennett ◽  
Camille L. Bilodeau ◽  
Olaf S. Andersen ◽  
...  
Science ◽  
1990 ◽  
Vol 250 (4985) ◽  
pp. 1256-1259 ◽  
Author(s):  
A. O'Connell ◽  
R. Koeppe ◽  
O. Andersen

2019 ◽  
Vol 963 ◽  
pp. 390-393
Author(s):  
Takahiro Morikawa ◽  
Shintaroh Sato ◽  
Akio Shima

SiC DMOSFET with self-aligned channels was fabricated and characterized. The process features self-aligned channel formation by utilizing tilted ion implantation. We confirmed that channel areas were successfully formed along both sides of the stripe cell. Electrical measurements revealed that the characteristics of the fabricated DMOSFET chips had sufficiently high blocking voltage and moderate values of threshold voltage and on-state resistance. These experimental results show the proposed process can be an easy option for fabrication of SiC DMOSFET.


1989 ◽  
Vol 106 (4) ◽  
pp. 555-557 ◽  
Author(s):  
Yuji Sugita ◽  
Takashi Tobe ◽  
Eiichi Oda ◽  
Motowo Tomita ◽  
Ko Yasukawa ◽  
...  

2014 ◽  
Vol 81 (1) ◽  
Author(s):  
L. Willingale ◽  
S. R. Nagel ◽  
A. G. R. Thomas ◽  
C. Bellei ◽  
R. J. Clarke ◽  
...  

Copper activation was used to characterize high-energy proton beam acceleration from near-critical density plasma targets. An enhancement was observed when decreasing the target density, which is indicative for an increased laser-accelerated hot electron density at the rear target-vacuum boundary. This is due to channel formation and collimation of the hot electrons inside the target. Particle-in-cell simulations support the experimental observations and show the correlation between channel depth and longitudinal electric field strength is directly correlated with the proton acceleration.


Caryologia ◽  
2002 ◽  
Vol 55 (2) ◽  
pp. 161-169 ◽  
Author(s):  
Xin Yu Wang ◽  
Xiu Wan Nie ◽  
Guang Qin Guo ◽  
You Fu Pan ◽  
Guo Chang Zheng

Author(s):  
B. L. Soloff ◽  
T. A. Rado

Mycobacteriophage R1 was originally isolated from a lysogenic culture of M. butyricum. The virus was propagated on a leucine-requiring derivative of M. smegmatis, 607 leu−, isolated by nitrosoguanidine mutagenesis of typestrain ATCC 607. Growth was accomplished in a minimal medium containing glycerol and glucose as carbon source and enriched by the addition of 80 μg/ ml L-leucine. Bacteria in early logarithmic growth phase were infected with virus at a multiplicity of 5, and incubated with aeration for 8 hours. The partially lysed suspension was diluted 1:10 in growth medium and incubated for a further 8 hours. This permitted stationary phase cells to re-enter logarithmic growth and resulted in complete lysis of the culture.


Author(s):  
A.R. Pelton ◽  
A.F. Marshall ◽  
Y.S. Lee

Amorphous materials are of current interest due to their desirable mechanical, electrical and magnetic properties. Furthermore, crystallizing amorphous alloys provides an avenue for discerning sequential and competitive phases thus allowing access to otherwise inaccessible crystalline structures. Previous studies have shown the benefits of using AEM to determine crystal structures and compositions of partially crystallized alloys. The present paper will discuss the AEM characterization of crystallized Cu-Ti and Ni-Ti amorphous films.Cu60Ti40: The amorphous alloy Cu60Ti40, when continuously heated, forms a simple intermediate, macrocrystalline phase which then transforms to the ordered, equilibrium Cu3Ti2 phase. However, contrary to what one would expect from kinetic considerations, isothermal annealing below the isochronal crystallization temperature results in direct nucleation and growth of Cu3Ti2 from the amorphous matrix.


Author(s):  
B. H. Kear ◽  
J. M. Oblak

A nickel-base superalloy is essentially a Ni/Cr solid solution hardened by additions of Al (Ti, Nb, etc.) to precipitate a coherent, ordered phase. In most commercial alloy systems, e.g. B-1900, IN-100 and Mar-M200, the stable precipitate is Ni3 (Al,Ti) γ′, with an LI2structure. In A lloy 901 the normal precipitate is metastable Nis Ti3 γ′ ; the stable phase is a hexagonal Do2 4 structure. In Alloy 718 the strengthening precipitate is metastable γ″, which has a body-centered tetragonal D022 structure.Precipitate MorphologyIn most systems the ordered γ′ phase forms by a continuous precipitation re-action, which gives rise to a uniform intragranular dispersion of precipitate particles. For zero γ/γ′ misfit, the γ′ precipitates assume a spheroidal.


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