Sensitive Liquid Sensing Using Rolled-Up InAs/GaAs Quantum Dot Microtube Ring Resonator

Cao, Jun; Wang, Qi; Chai, Zhaoer; Zhu, Yiming; Liu, Hao; Liu, Kai; Ren, Xiaomin

doi:10.1109/acp.2018.8595762

Cited by 1 publication

(2 citation statements)

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“…In 2008, rolled-up microtubes were applied for refractive index sensing for the first time with a characterized sensitivity of ∼62 nm/RIU . Usually the optofluidic detection process requires immersing the tube into test solutions , or delivery of liquid solutions through a tapered glass capillary. ,, The involved bulky setup and precision micromanipulation render the whole process rather sophisticated and less feasible for practical applications. It is highly desired to develop on-chip optofluidic integrated microtube-based active sensors, which largely simplifies the sample delivery process and minimizes the required sample volume down to approximately picoliters.…”

Section: Rolled-up Nanomembranes As Microtubular Sensorsmentioning

confidence: 99%

“…105,107 In 2008, rolled-up microtubes were applied for refractive index sensing for the first time with a characterized sensitivity of ∼62 nm/RIU. 108 Usually the optofluidic detection process requires immersing the tube into test solutions 109,110 or delivery of liquid solutions through a tapered glass capillary. 108,111,112 The involved bulky setup and precision micromanipulation render the whole process rather sophisticated and less feasible for practical applications.…”

Section: Acs Sensorsmentioning

confidence: 99%

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Three-Dimensional Microtubular Devices for Lab-on-a-Chip Sensing Applications

et al. 2019

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The rapid advance of micro-/nanofabrication technologies opens up new opportunities for miniaturized sensing devices based on novel three-dimensional (3D) architectures. Notably, microtubular geometry exhibits natural advantages for sensing applications due to its unique properties including the hollow sensing channel, high surface−volume ratio, well-controlled shape parameters and compatibility to on-chip integration. Here the state-of-the-art sensing techniques based on microtubular devices are reviewed. The developed microtubular sensors cover microcapillaries, rolled-up nanomembranes, chemically synthesized tubular arrays, and photoresist-based tubular structures via 3D printing. Various types of microtubular sensors working in optical, electrical, and magnetic principles exhibit an extremely broad scope of sensing targets including liquids, biomolecules, micrometer-sized/nanosized objects, and gases. Moreover, they have also been applied for the detection of mechanical, acoustic, and magnetic fields as well as fluorescence signals in labeling-based analyses. At last, a comprehensive outlook of future research on microtubular sensors is discussed on pushing the detection limit, extending the functionality, and taking a step forward to a compact and integrable core module in a lab-on-a-chip analytical system for understanding fundamental biological events or performing accurate point-of-care diagnostics.

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