scholarly journals Resistive-pulse and rectification sensing with glass and carbon nanopipettes

2017 ◽  
Vol 473 (2199) ◽  
pp. 20160931 ◽  
Author(s):  
Yixian Wang ◽  
Dengchao Wang ◽  
Michael V. Mirkin
Keyword(s):  
Solid State ◽  
Carbon Layer ◽  
Fine Tuning ◽  
Physical Size ◽  
Resistive Pulse ◽  
Thin Carbon ◽  
Local Measurements ◽  
Electroactive Species ◽  
Current Rectification ◽  
Resistive Pulse Sensing

Along with more prevalent solid-state nanopores, glass or quartz nanopipettes have found applications in resistive-pulse and rectification sensing. Their advantages include the ease of fabrication, small physical size and needle-like geometry, rendering them useful for local measurements in small spaces and delivery of nanoparticles/biomolecules. Carbon nanopipettes fabricated by depositing a thin carbon layer on the inner wall of a quartz pipette provide additional means for detecting electroactive species and fine-tuning the current rectification properties. In this paper, we discuss the fundamentals of resistive-pulse sensing with nanopipettes and our recent studies of current rectification in carbon pipettes.

Dielectric Coatings for Resistive Pulse Sensing Using Solid-State Pores

2021 ◽  
Vol 13 (8) ◽  
pp. 10632-10638
Author(s):  
Tomoki Hayashida ◽  
Makusu Tsutsui ◽  
Sanae Murayama ◽  
Tomoko Nakada ◽  
Masateru Taniguchi
Keyword(s):  
Solid State ◽  
Dielectric Coatings ◽  
Resistive Pulse ◽  
Resistive Pulse Sensing

Problems with oxygen analysis in the system MgO-Al2O3-SiO2 with the electron microprobe

1992 ◽  
Vol 50 (2) ◽  
pp. 1624-1625
Author(s):  
Michel Fialin ◽  
Guy Rémond
Keyword(s):  
Transition Metal ◽  
Metal Oxides ◽  
Transition Metal Oxides ◽  
Electrostatic Charge ◽  
Carbon Layer ◽  
Sample Holder ◽  
Rock Matrix ◽  
Electrical Discharges ◽  
Thin Carbon ◽  
Beam Instabilities

Oxygen-bearing minerals are generally strong insulators (e.g. silicates), or if not (e.g. transition metal oxides), they are included within a rock matrix which electrically isolates them from the sample holder contacts. In this respect, a thin carbon layer (150 Å in our laboratory) is evaporated on the sections in order to restore the conductivity. For silicates, overestimated oxygen concentrations are usually noted when transition metal oxides are used as standards. These trends corroborate the results of Bastin and Heijligers on MgO, Al2O3 and SiO2. According to our experiments, these errors are independent of the accelerating voltage used (fig.l).Owing to the low density of preexisting defects within the Al2O3 single-crystal, no significant charge buildup occurs under irradiation at low accelerating voltage (< 10keV). As a consequence, neither beam instabilities, due to electrical discharges within the excited volume, nor losses of energy for beam electrons before striking the sample, due to the presence of the electrostatic charge-induced potential, are noted : measurements from both coated and uncoated samples give comparable results which demonstrates that the carbon coating is not the cause of the observed errors.

Role of Nanopore Geometry in Particle Resolution by Resistive‐Pulse Sensing

2021 ◽  
Vol 6 (1) ◽  
pp. 59-67
Author(s):  
Durdane Yilmaz ◽  
Dila Kaya ◽  
Kaan Kececi ◽  
Ali Dinler
Keyword(s):  
Resistive Pulse ◽  
Resistive Pulse Sensing

Nanotubes Complexed with DNA and Proteins for Resistive-Pulse Sensing

ACS Nano ◽  
2013 ◽  
Vol 7 (10) ◽  
pp. 8857-8869 ◽  
Author(s):  
Jingjie Sha ◽  
Tawfique Hasan ◽  
Silvia Milana ◽  
Cristina Bertulli ◽  
Nicholas A. W. Bell ◽  
...  
Keyword(s):  
Resistive Pulse ◽  
Resistive Pulse Sensing

scholarly journals Nonclogging Resistive Pulse Sensing with Electrohydrodynamic Cone-Jet Bridges

2011 ◽  
Vol 1 (2) ◽  
Author(s):  
Yuejun Zhao ◽  
David B. Bober ◽  
Chuan-Hua Chen
Keyword(s):  
Resistive Pulse ◽  
Resistive Pulse Sensing

Cu supported on thin carbon layer-coated porous SiO2 for efficient ethanol dehydrogenation

2018 ◽  
Vol 8 (2) ◽  
pp. 472-479 ◽  
Author(s):  
Qing-Nan Wang ◽  
Lei Shi ◽  
Wei Li ◽  
Wen-Cui Li ◽  
Rui Si ◽  
...  
Keyword(s):  
Carbon Layer ◽  
Good Stability ◽  
Ethanol Dehydrogenation ◽  
Porous Sio2 ◽  
Thin Carbon

The designed Cu/C/SiO2 catalyst combines the favourable properties of carbon and silica, thus showing improved selectivity associated with good stability.

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