Impact of different fixed dental prostheses on radiation dose in helical tomotherapy as measured with metal oxide semiconductor field-effect transistor dosimetry

Author(s):  
Songul BARLAZ US ◽  
Ayse Seda ATAOL ◽  
Gulfem ERGUN
1987 ◽  
Vol 65 (8) ◽  
pp. 995-998
Author(s):  
N. G. Tarr

It is shown that the accuracy of the charge-sheet model for the long-channel metal-oxide-semiconductor field-effect transistor can be improved by allowing for the small potential drop across the inversion layer, and by using a more accurate analytic approximation for the charge stored in the depletion region.


2008 ◽  
Vol 1144 ◽  
Author(s):  
Pranav Garg ◽  
Yi Hong ◽  
Md. Mash-Hud Iqbal ◽  
Stephen J. Fonash

ABSTRACTRecently, we have experimentally demonstrated a very simply structured unipolar accumulation-type metal oxide semiconductor field effect transistor (AMOSFET) using grow-in-place silicon nanowires. The AMOSFET consists of a single doping type nanowire, metal source and drain contacts which are separated by a partially gated region. Despite its simple configuration, it is capable of high performance thereby offering the potential of a low manufacturing-cost transistor. Since the quality of the metal/semiconductor ohmic source and drain contacts impacts AMOSFET performance, we repot here on initial exploration of contact variations and of the impact of thermal process history. With process optimization, current on/off ratios of 106 and subthreshold swings of 70 mV/dec have been achieved with these simple devices


2012 ◽  
Vol 100 (10) ◽  
pp. 101603 ◽  
Author(s):  
Seok-Ho Song ◽  
Hyun-Ho Yang ◽  
Chang-Hoon Han ◽  
Seung-Deok Ko ◽  
Seok-Hee Lee ◽  
...  

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