Beilstein J. Nanotechnol.2015,6, 583–594, doi:10.3762/bjnano.6.60
Christian Godet Institut de Physique de Rennes, UMR 6251 CNRS - Université de Rennes 1, 35042 Rennes Cedex, France 10.3762/bjnano.6.60 Abstract Dynamic properties of n-alkyl monolayers covalently bonded to Si(111) were studied by broadband admittancespectroscopy as a function of the temperature
] conformational changes on electron transport properties have rarely been explicitly described.
In this context, this admittancespectroscopy study emphasizes a collective dynamic behavior of linear saturated (n-alkyl) chains tethered to Si(111). Dynamic properties are very sensitive to structure and conformation
of the OML. In contrast with alternative dynamic probes, such as nuclear magnetic resonance, which are limited by a poor signal-to-noise ratio and require functionalization of 3D nanoparticles or porous solids [3], admittancespectroscopy is sensitive to 0.3 picomoles of carboxylic acid dipoles [40
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Figure 1:
Top: the electrostatic pressure resulting from a dc voltage drop on the insulating molecular monola...
Beilstein J. Nanotechnol.2014,5, 964–972, doi:10.3762/bjnano.5.110
developing low-cost applications. This paper presents fast, cost-effective frequency-domain methods with which to obtain the responses within seconds. The inverse-repeat binary sequence (IRS) is applied and the admittancespectroscopy between the drain and source is computed through Fourier methods. The
methods is verified by experimental measurements from an n-type SiNW FET.
Keywords: admittancespectroscopy; excitation design; frequency characterization; frequency response; silicon nanowire; Introduction
Recent development in sensing biochemical molecules has been rapid. Among many sensing
logarithmic averaging procedure (Equation 4) was then applied to each data period.
Figure 11 shows the computed frequency responses (admittancespectroscopy) when the gate voltage was changed from 1.0 V to 3.0 V. The figure shows an almost linear drop in the gain curve when the gate voltage is below 2.0 V