scholarly journals Double side nanostructuring of microcantilever sensors with TiO2-NTs as a route to enhance their sensitivity

Nanoscale ◽  
2020 ◽  
Vol 12 (25) ◽  
pp. 13338-13345 ◽  
Author(s):  
Guillaume Thomas ◽  
Geoffrey Gerer ◽  
Laurent Schlur ◽  
Fabien Schnell ◽  
Thomas Cottineau ◽  
...  
Keyword(s):  
Microcantilever Sensors ◽  
Tio2 Nts

A double side nanostructured microcantilever with ordered, aligned and open TiO2 nanotubes.

Manufacture of Microcantilever Sensors

2005 ◽  
Author(s):  
Andrew W. McFarland ◽  
Jonathan S. Colton ◽  
Daniel Cox ◽  
Steven Y. Liang
Keyword(s):  
Machine Tool ◽  
Mechanical Response ◽  
Surface Force ◽  
Depth Of Cut ◽  
Feed Speed ◽  
Machining Parameters ◽  
Form Accuracy ◽  
Microcantilever Sensors ◽  
Micro Scale ◽  
Sensing Applications

Mechanical micro machining is an emerging technology with many potential benefits and equally great challenges. The push to develop processes and tools capable of micro scale fabrication is a result of the widespread drive to reduce part and feature size. One important factor that contributes to the ability to machine at the microscale level is the overall size of the machine tool due to the effects of thermal, static, and dynamic stabilities. This paper explores the technical feasibility of miniaturized machine tools capable of fabricating features and parts on the micro scale in terms of depth of cut and part form accuracy. It develops a machine tool and examines its capabilities through benchmarking tests and the making of precision dies for the injection molding of microcantilever parts. The design and configuration of a miniaturized vertical machining center of overall dimension less than 300 mm on a side is presented and the component specifications discussed. The six axis machine has linear positioning resolution of 4 nm by 10 nm by 10 nm, with accuracy on the order of 0.3 μm, in the height, feed, and cross feed directions. The work volume as defined by the ranges of axes travel are 4 mm by 25 mm by 25 mm in the height, feed, and cross feed and 20 degrees in the rotational space. To quantify the performance capability of the miniaturized machine tool as a system, a series of evaluation tests were implemented based on linear and arch trajectories over a range of feed speed and depth of cut conditions. Test results suggest that micro level form accuracy and sub-micron level finish are generally achievable for parts with moderate curvature and gradient in the geometry under selected machining parameters and conditions. An injection mold was made of steel with this machine and plastic microcantilevers fabricated. Plastic microcantilevers are appropriate for sensing applications such as surface probe microscopy. The microcantilevers, made from polystyrene, were 464 to 755 μm long, 130 μm wide and only 6–9 μm thick. They showed very good uniformity, reproducibility, and appropriate mechanical response for use as sensors in surface force microscopy.

Label-free detection of amyloid growth with microcantilever sensors

2008 ◽  
Vol 19 (38) ◽  
pp. 384007 ◽  
Author(s):  
Tuomas P J Knowles ◽  
Wenmiao Shu ◽  
François Huber ◽  
Hans Peter Lang ◽  
Christoph Gerber ◽  
...  
Keyword(s):  
Label Free ◽  
Microcantilever Sensors ◽  
Label Free Detection

Modified Model for Static Behavior of Microcantilever Gas Sensor Adsorbed with Monolayer Molecules

2011 ◽  
Vol 415-417 ◽  
pp. 455-459
Author(s):  
Xiao Ming Wang ◽  
Fei Wang ◽  
Xue Zeng Zhao ◽  
Da Lei Jing
Keyword(s):  
Young’S Modulus ◽  
Young's Modulus ◽  
Curvature Radius ◽  
Static Behavior ◽  
Neutral Layer ◽  
Modified Model ◽  
Adsorbed Molecules ◽  
Microcantilever Sensors ◽  
The Relationship ◽  
Layer Position

The modified static bending model of microcantilever with monolayer molecules has been established based on energy method, in which the change in neutral layer position caused by adsorption-induced stress has been considered. On this basis, we have analyzed the relationship between the bending curvature radius of a microcantilever with its thickness, Young’s modulus and molecule-molecule distance of adsorbed molecules when it is adsorbed with monolayer water molecules. Additionally, we have investigated the effect of change in neutral layer position on the static behavior of microcantilever sensors and have found that: 1) the bending curvature radius of microcantilever is affected by its Young’s modulus, thickness and distance of adsorbed molecules respectively; 2)the predicted error of bending curvature radius caused by the change in neutral layer position slightly increases with decreasing Young’s modulus and thickness, whereas the effect of distance between adsorbed molecules on the error is significant.

Detection of 2,4-dinitrotoluene using microcantilever sensors

2004 ◽  
Vol 99 (2-3) ◽  
pp. 223-229 ◽  
Author(s):  
L.A Pinnaduwage ◽  
T Thundat ◽  
J.E Hawk ◽  
D.L Hedden ◽  
P.F Britt ◽  
...  
Keyword(s):  
Microcantilever Sensors

Microcantilever sensors with chemically selective coatings of ionic liquids

AIChE Journal ◽  
2007 ◽  
Vol 53 (10) ◽  
pp. 2726-2731 ◽  
Author(s):  
Eunhyea Chung ◽  
Nickolay Lavrik ◽  
Panos Datskos ◽  
Joanna Mcfarlane ◽  
Sheng Dai ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Microcantilever Sensors ◽  
Chemically Selective

Influence of residual stress on diffusion-induced bending in bilayered microcantilever sensors

2010 ◽  
Vol 518 (15) ◽  
pp. 4345-4350 ◽  
Author(s):  
Fu-Zhen Xuan ◽  
Shan-Shan Shao ◽  
Zhengdong Wang ◽  
Shan-Tung Tu
Keyword(s):  
Residual Stress ◽  
Microcantilever Sensors

Development of calix[4]arenes modified at their narrow- and wider-rims as potential metal ions sensor layers for microcantilever sensors: further studies

2021 ◽  
Author(s):  
Paris E. Georghiou ◽  
Shofiur Rahman ◽  
Yousif Assiri ◽  
Gopi Kishore Valluru ◽  
Melita Menelaou ◽  
...  
Keyword(s):  
Metal Ions ◽  
Metal Ion ◽  
Computational Study ◽  
Aqueous Media ◽  
Experimental Studies ◽  
Ionic Species ◽  
Alkoxy Group ◽  
Self Assembled Monolayers ◽  
Microcantilever Sensors ◽  
Assembled Monolayers

The development of a microcantilever (MCL) sensing device capable of simultaneously detecting several metal ionic species in aqueous media with low limits of detection requires a variety of sensing layers which are ion-specific. Calix[4]arenes are robust molecules which can be easily modified and have been extensively studied for their ion binding properties. They are also capable of forming self-assembled monolayers (SAMs) onto the gold layers of MCLs and are capable of detecting various metal ions with different anionic counterions in aqueous solutions. In this paper we report on the effect of the alkoxy group in the narrow rim [O-(alkoxycarbonyl)methoxy] substituents of bimodal calix[4]arenes which have been used as metal ion MCL sensing layers, using classical solution state experimental studies. A DFT computational study to compare the experimental results with several metal ions is also reported herein.

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