A micro gas chromatography chip with an embedded non-cascaded thermal conductivity detector

Narayanan, Shree; Alfeeli, Bassam; Agah, Masoud

doi:10.1016/j.proeng.2010.09.040

Cited by 23 publications

(11 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Throughout the past 40 years, the efforts for developing field portable, compact, and low power GC instruments has been significant. Towards that aim, a number of GC systems including miniaturized micro-fabricated components (pre-concentrators, separation columns, micro-heaters) are reported [ 41 ], including very compact lab-on-the-chip platforms comprising the sampling system, separation column and detectors like photo-ionization detectors (PID) and thermal coupling detectors (TCD) [ 42 , 43 ]. These are known as micro-GC (µGC) systems.…”

Section: Microfluidic Gas Sensing Devices Based On Electrical Tranmentioning

confidence: 99%

Microfluidics in Gas Sensing and Artificial Olfaction

Rebordão

Palma

Roque

2020

Sensors

View full text Add to dashboard Cite

Rapid, real-time, and non-invasive identification of volatile organic compounds (VOCs) and gases is an increasingly relevant field, with applications in areas such as healthcare, agriculture, or industry. Ideal characteristics of VOC and gas sensing devices used for artificial olfaction include portability and affordability, low power consumption, fast response, high selectivity, and sensitivity. Microfluidics meets all these requirements and allows for in situ operation and small sample amounts, providing many advantages compared to conventional methods using sophisticated apparatus such as gas chromatography and mass spectrometry. This review covers the work accomplished so far regarding microfluidic devices for gas sensing and artificial olfaction. Systems utilizing electrical and optical transduction, as well as several system designs engineered throughout the years are summarized, and future perspectives in the field are discussed.

show abstract

Section: Microfluidic Gas Sensing Devices Based On Electrical Tranmentioning

confidence: 99%

Microfluidics in Gas Sensing and Artificial Olfaction

Rebordão

Palma

Roque

2020

Sensors

View full text Add to dashboard Cite

show abstract

“…Part of these problems can be solved if all µ-components are fabricated and integrated in a single microchip. However, a common problem in this type of configuration is the thermal crosstalk between components, which can compromise their operation and lifespan [ 250 ]. Microchip configurations are normally employed in commercial devices, while hybrid setups are mostly found for the purpose of research and investigation.…”

Section: Microanalytical Tools For Vocs Discriminationmentioning

confidence: 99%

Advancements in Microfabricated Gas Sensors and Microanalytical Tools for the Sensitive and Selective Detection of Odors

Ollé

Farré-Lladós

Casals‐Terré

2020

Sensors

View full text Add to dashboard Cite

In recent years, advancements in micromachining techniques and nanomaterials have enabled the fabrication of highly sensitive devices for the detection of odorous species. Recent efforts done in the miniaturization of gas sensors have contributed to obtain increasingly compact and portable devices. Besides, the implementation of new nanomaterials in the active layer of these devices is helping to optimize their performance and increase their sensitivity close to humans’ olfactory system. Nonetheless, a common concern of general-purpose gas sensors is their lack of selectivity towards multiple analytes. In recent years, advancements in microfabrication techniques and microfluidics have contributed to create new microanalytical tools, which represent a very good alternative to conventional analytical devices and sensor-array systems for the selective detection of odors. Hence, this paper presents a general overview of the recent advancements in microfabricated gas sensors and microanalytical devices for the sensitive and selective detection of volatile organic compounds (VOCs). The working principle of these devices, design requirements, implementation techniques, and the key parameters to optimize their performance are evaluated in this paper. The authors of this work intend to show the potential of combining both solutions in the creation of highly compact, low-cost, and easy-to-deploy platforms for odor monitoring.

show abstract

“…Kaanta et al [24] reported a monolithic GC separation column and μTCD. This integrated device is able to separate nitrogen, methane and carbon dioxide within 30 s. To reduce the number of fluidic ports, Narayanan et al [25] embedded the reference resistor of the μTCD close to the inlet of the separation column in the integrated device. The resistors in this μTCD are anchored to the substrate and characterized by a poor LOD.…”

Section: Micro Tcd (μTcd)mentioning

confidence: 99%

Recent advances in micro detectors for micro gas chromatography

Duan

2019

Sci. China Mater.

View full text Add to dashboard Cite

Micro gas chromatography (μGC) has been continuously gaining attention since the last century owing to multiple favorable characteristics, such as its small size, low power consumption and minimal production and maintenance costs. μGC has the potential to provide practical solutions to emerging analytical challenges in security, health, and environment. In this review, we summarize recent advances in micro detectors for μGC, including the study of the miniaturization of conventional detectors and the development of novel detectors for μGC chromatography.

show abstract

A micro gas chromatography chip with an embedded non-cascaded thermal conductivity detector

Cited by 23 publications

References 10 publications

Microfluidics in Gas Sensing and Artificial Olfaction

Microfluidics in Gas Sensing and Artificial Olfaction

Advancements in Microfabricated Gas Sensors and Microanalytical Tools for the Sensitive and Selective Detection of Odors

Recent advances in micro detectors for micro gas chromatography

Contact Info

Product

Resources

About