Post-CMOS wafer level growth of carbon nanotubes for low-cost microsensors—a proof of concept

In this paper, we present a new low-cost robotic platform that has been explicitly developed to increase children with neurodevelopmental disorders’ involvement in the environment during everyday living activities. In order to support the children and youth with both the sequencing and learning of everyday living tasks, our robotic platform incorporates a sophisticated online action detection module that is capable of monitoring the acts performed by users. We explain all the technical details that allow many applications to be introduced to support individuals with functional diversity. We present this work as a proof of concept, which will enable an assessment of the impact that the developed technology may have on the collective of children and youth with neurodevelopmental disorders in the near future.

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Application of nanomaterials in microbial-cell biosensor constructions

Chemical Papers ◽

10.2478/s11696-014-0602-2 ◽

2015 ◽

Vol 69 (1) ◽

Cited By ~ 9

Author(s):

Jana Šefčovičová ◽

Jan Tkac

Keyword(s):

Carbon Nanotubes ◽

Gold Nanoparticles ◽

Rapid Detection ◽

Food Industry ◽

Low Cost ◽

Microbial Cell ◽

Direct Connection ◽

Qualitative Detection ◽

Analytical Tools ◽

Cell Biosensor

AbstractMicrobial cell biosensors, where cells are in direct connection with a transducer enabling quantitative and qualitative detection of an analyte, are very promising analytical tools applied mainly for assays in the environmental field, food industry or biomedicine. Microbial cell biosensors are an excellent alternative to conventional analytical methods due to their specificity, rapid detection and low cost of analysis. Nowadays, nanomaterials are often used in the construction of biosensors to improve their sensitivity and stability. In this review, the combination of microbial and other individual cells with different nanomaterials (carbon nanotubes, graphene, gold nanoparticles, etc.) for the construction of biosensors is described and their applications are provided as well.

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Low-Cost and Energy-Saving Wireless Sensor Network for Real-Time Urban Mobility Monitoring System

Journal of Sensors ◽

10.1155/2015/685786 ◽

2015 ◽

Vol 2015 ◽

pp. 1-8 ◽

Cited By ~ 7

Author(s):

Joyoung Lee ◽

Zijia Zhong ◽

Bo Du ◽

Slobodan Gutesa ◽

Kitae Kim

Keyword(s):

Energy Saving ◽

Fiber Optics ◽

Monitoring System ◽

Data Center ◽

Low Cost ◽

Wireless Sensor ◽

Navigation Systems ◽

Urban Mobility ◽

Proof Of Concept ◽

Sensor Unit

This paper presents a low-cost and energy-saving urban mobility monitoring system based on wireless sensor networks (WSNs). The primary components of the proposed sensor unit are a Bluetooth sensor and a Zigbee transceiver. Within the WSN, the Bluetooth sensor captures the MAC addresses of Bluetooth units equipped in mobile devices and car navigation systems. The Zigbee transceiver transmits the collected MAC addresses to a data center without any major communications infrastructures (e.g., fiber optics and 3G/4G network). A total of seven prototype sensor units have been deployed on roadway segments in Newark, New Jersey, for a proof of concept (POC) test. The results of the POC test show that the performance of the proposed sensor unit appears promising, resulting in 2% of data drop rates and an improved Bluetooth capturing rate.

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Nanocasting of carbon nanotubes: in-situ graphitization of a low-cost mesostructured silica templated by non-ionic surfactant micelles

Chemical Communications ◽

10.1039/b301303k ◽

2003 ◽

pp. 1436 ◽

Cited By ~ 29

Author(s):

Seong-Su Kim ◽

Dong-Keun Lee ◽

Jainisha Shah ◽

Thomas J. Pinnavaia

Keyword(s):

Carbon Nanotubes ◽

Low Cost ◽

Ionic Surfactant ◽

Surfactant Micelles ◽

Mesostructured Silica

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Electromyography-controlled car: A proof of concept based on surface electromyography, Extreme Learning Machines and low-cost open hardware

Computers & Electrical Engineering ◽

10.1016/j.compeleceng.2018.11.012 ◽

2019 ◽

Vol 73 ◽

pp. 167-179 ◽

Cited By ~ 12

Author(s):

Rafaela C. de Freitas ◽

Rodrigo Alves ◽

Abel G. da Silva Filho ◽

Ricardo E. de Souza ◽

Byron L.D. Bezerra ◽

...

Keyword(s):

Surface Electromyography ◽

Low Cost ◽

Proof Of Concept ◽

Extreme Learning Machines ◽

Open Hardware ◽

Learning Machines

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Development of an IoT System for Environmental Monitoring: Software

10.26686/wgtn.13557857 ◽

2021 ◽

Author(s):

Benjamin Secker

Keyword(s):

Environmental Monitoring ◽

Low Cost ◽

Proof Of Concept ◽

Embedded Devices ◽

Data Loggers ◽

Environmental Monitoring System ◽

Use Of The Internet ◽

High Level ◽

Monitoring Software ◽

The Internet Of Things

Use of the Internet of Things (IoT) is poised to be the next big advancement in environmental monitoring. We present the high-level software side of a proof-of-concept that demonstrates an end-to-end environmental monitoring system,<br><div>replacing Greater Wellington Regional Council’s expensive data loggers with low-cost, IoT centric embedded devices, and it’s supporting cloud platform. The proof-of-concept includes a Micropython-based software stack running on an ESP32 microcontroller. The device software includes a built-in webserver that hosts a responsive Web App for configuration of the device. Telemetry data is sent over Vodafone’s NB-IoT network and stored in Azure IoT Central, where it can be visualised and exported.</div><br>While future development is required for a production-ready system, the proof-of-concept justifies the use of modern IoT technologies for environmental monitoring. The open source nature of the project means that the knowledge gained can be re-used and modified to suit the use-cases for other organisations.

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Nanocone-Shaped Carbon Nanotubes Field-Emitter Array Fabricated by Laser Ablation

Nanomaterials ◽

10.3390/nano11123244 ◽

2021 ◽

Vol 11 (12) ◽

pp. 3244

Author(s):

Jiuzhou Zhao ◽

Zhenjun Li ◽

Matthew Thomas Cole ◽

Aiwei Wang ◽

Xiangdong Guo ◽

...

Keyword(s):

Carbon Nanotubes ◽

Laser Ablation ◽

High Performance ◽

Low Cost ◽

Field Emitter ◽

Beam Focusing ◽

Field Emitter Arrays ◽

Emitter Array ◽

Field Emitter Array ◽

Tip Radius

The nanocone-shaped carbon nanotubes field-emitter array (NCNA) is a near-ideal field-emitter array that combines the advantages of geometry and material. In contrast to previous methods of field-emitter array, laser ablation is a low-cost and clean method that does not require any photolithography or wet chemistry. However, nanocone shapes are hard to achieve through laser ablation due to the micrometer-scale focusing spot. Here, we develop an ultraviolet (UV) laser beam patterning technique that is capable of reliably realizing NCNA with a cone-tip radius of ≈300 nm, utilizing optimized beam focusing and unique carbon nanotube–light interaction properties. The patterned array provided smaller turn-on fields (reduced from 2.6 to 1.6 V/μm) in emitters and supported a higher (increased from 10 to 140 mA/cm2) and more stable emission than their unpatterned counterparts. The present technique may be widely applied in the fabrication of high-performance CNTs field-emitter arrays.

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