scholarly journals Monolayer molecular sensing using infrared leaky waveguide mode

AIP Advances ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 035305
Author(s):  
Tieyan Zhang ◽  
De He ◽  
Lu Liu ◽  
Qiqige Wulan ◽  
Jiachen Yu ◽  
...  
Keyword(s):  
Waveguide Mode ◽  
Molecular Sensing ◽  
Leaky Waveguide

Theoretical study of the surface anchoring effect on the full leaky waveguide mode of liquid crystal

2018 ◽  
Vol 33 (6) ◽  
pp. 483-489
Author(s):  
孙婷婷 SUN Ting-ting ◽  
袁 瑞 YUAN Rui ◽  
李振杰 LI Zhen-jie ◽  
朱吉亮 ZHU Ji-liang ◽  
邢红玉 XING Hong-yu ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Waveguide Mode ◽  
Theoretical Study ◽  
Surface Anchoring ◽  
Anchoring Effect ◽  
Leaky Waveguide

Integrated ATR-leaky waveguide-mode sensor head fabricated by laser beam etching

1996 ◽  
Author(s):  
Stefan Nischwitz ◽  
Tomas R. Sterkenburgh ◽  
Hilmar Franke
Keyword(s):  
Laser Beam ◽  
Waveguide Mode ◽  
Sensor Head ◽  
Leaky Waveguide

Absorption Measurement Using a Leaky Waveguide Mode

1997 ◽  
Vol 4 (3) ◽  
pp. 354-357 ◽  
Author(s):  
Takayuki Okamoto ◽  
Ichirou Yamaguchi
Keyword(s):  
Waveguide Mode ◽  
Absorption Measurement ◽  
Leaky Waveguide

scholarly journals Germanium Nanowires as Sensing Devices: Modelization of Electrical Properties

Nanomaterials ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 507
Author(s):  
Luca Seravalli ◽  
Claudio Ferrari ◽  
Matteo Bosi
Keyword(s):  
Charge Transfer ◽  
Electrical Properties ◽  
Surface Charges ◽  
Molecular Sensing ◽  
Germanium Nanowires ◽  
Physical Mechanisms ◽  
Additional Doping ◽  
Different Types ◽  
N Doping ◽  
Very High

In this paper, we model the electrical properties of germanium nanowires with a particular focus on physical mechanisms of electrical molecular sensing. We use the Tibercad software to solve the drift-diffusion equations in 3D and we validate the model against experimental data, considering a p-doped nanowire with surface traps. We simulate three different types of interactions: (1) Passivation of surface traps; (2) Additional surface charges; (3) Charge transfer from molecules to nanowires. By analyzing simulated I–V characteristics, we observe that: (i) the largest change in current occurs with negative charges on the surfaces; (ii) charge transfer provides relevant current changes only for very high values of additional doping; (iii) for certain values of additional n-doping ambipolar currents could be obtained. The results of these simulations highlight the complexity of the molecular sensing mechanism in nanowires, that depends not only on the NW parameters but also on the properties of the molecules. We expect that these findings will be valuable to extend the knowledge of molecular sensing by germanium nanowires, a fundamental step to develop novel sensors based on these nanostructures.

Sign in / Sign up

Export Citation Format

Share Document