Silica hollow bottle resonators for use as whispering gallery mode based chemical sensors

Stoian, Razvan-Ionut; Bui, Khoa V.; Rosenberger, A. T.

doi:10.1088/2040-8978/17/12/125011

Cited by 34 publications

(29 citation statements)

References 39 publications

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“…proposed a method to fabricate a hollow microbottle resonator for detecting CH 4 mixtures in air. The detection threshold was much less than 0.1% . Subsequently, in 2016, Ward et al.…”

Section: Structure and Application Of Wgmrsmentioning

confidence: 99%

“…With the continuous improvement of WGMRs in optical sensing, many novel geometric structures have appeared in recent years, such as: microdisk, [17,[116][117][118][119][120][121][122][123][124][125] microbubble, [126][127][128][129][130][131][132] microbottle, [133][134][135][136][137][138][139][140][141][142][143][144][145][146][147] microtube, [148][149][150][151][152][153][154][155][156][157][158][159][160] microcylinder, [161][162][163] etc. These new resonators are widely used in the field of phy...…”

Section: Preparation and Application Of Other Types Of Resonatorsmentioning

confidence: 99%

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Whispering Gallery Mode Optical Microresonators: Structures and Sensing Applications

Cai

Pan

Zhao

et al. 2020

Physica Status Solidi (a)

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Whispering gallery mode resonators (WGMRs) have achieved significant results due to their unique properties such as extremely small mode volume, ultra‐high quality (Q) factor, fast dynamic response, and ultra‐high sensitivity. WGM is commonly used in theoretical physics research, nonlinear optics, optoelectronic devices, and the preparation of high‐sensitivity sensors. This article briefly introduces the basic characteristics and sensing principle of WGM, the manufacturing method of WGMRs, and the sensing applications of microresonators in the fields of physics, chemistry, and biology. The detection limits of physical parameters and the detection sensitivity of biomolecules in recent decades are summarized. In addition, the advantages and disadvantages of different structures and the development trend of WGMRs applications are discussed.

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“…proposed a method to fabricate a hollow microbottle resonator for detecting CH 4 mixtures in air. The detection threshold was much less than 0.1% . Subsequently, in 2016, Ward et al.…”

Section: Structure and Application Of Wgmrsmentioning

confidence: 99%

Section: Preparation and Application Of Other Types Of Resonatorsmentioning

confidence: 99%

Whispering Gallery Mode Optical Microresonators: Structures and Sensing Applications

Cai

Pan

Zhao

et al. 2020

Physica Status Solidi (a)

View full text Add to dashboard Cite

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“…This can be achieved by thinning the initial capillary by thermal pulling [30], or by etching the inside wall with hydrofluoric acid [13]. An even simpler fabrication process has been demonstrated, where a previously-thinned capillary is heated with a flame while it is pressurized with air [31]. As the silica softens, the air pressure expands it, forming a smooth bubble.…”

Section: Fabrication and Characterizationmentioning

confidence: 99%

“…Recent results using self-referencing have shown a noise-equivalent detection limit of 10 fg/mL [39] for bovine serum albumin (BSA, a standard for protein concentration) in water with a hollow microbottle. It is also possible to detect changes by monitoring the absorption (using the fractional depth change of a resonance), a method that is more resistant to fluctuations and that has shown the detection of methane in air at partial pressures as low as

0.1 %

[31]. …”

Section: Applications To Sensingmentioning

confidence: 99%

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Optical Microbottle Resonators for Sensing

Bianucci

2016

Sensors

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Whispering gallery mode (WGM) optical microresonators have been shown to be the basis for sensors able to detect minute changes in their environment. This has made them a well-established platform for highly sensitive physical, chemical, and biological sensors. Microbottle resonators (MBR) are a type of WGM optical microresonator. They share characteristics with other, more established, resonator geometries such as cylinders and spheres, while presenting their unique spectral signature and other distinguishing features. In this review, we discuss recent advances in the theory and fabrication of different kinds of MBRs, including hollow ones, and their application to optofluidic sensing.

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High Q Ultra‐Low Threshold Lasing in Conjugated Polymer Blend Microspheres Promoted by FRET

González Sierra,

Martin‐Merinero,

Álvarez‐Conde

et al. 2024

Advanced Optical Materials

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Conjugated polymer (CP) based microspheres of very high definition and outstanding photonic and luminescent properties are prepared by a technique based on slow solvent‐controlled diffusion into micelles formed by the surfactant cetyl(trimethyl)ammonium bromide (CTAB). Poly[(9,9‐di‐n‐octylfluorenyl‐2,7‐diyl)‐alt‐(benzo[2,1,3]thiadiazol‐4,8‐diyl)] (F8BT) and mixtures of F8BT with poly[2‐methoxy‐5‐(2’‐ethylhexyloxy)‐1,4‐phenylene vinylene (MEH‐PPV) are used for this purpose. Microspheres with diameters between 1 and 10 µm are obtained and structural characterization by AFM and SEM demonstrate good sphericity and low surface roughness. Correspondingly, spontaneous emission of the spheres exhibits Mie resonances of high quality factor (Q > 1800), appropriately reproduced employing standard Mie theory. Upon pumping the microspheres with a pulsed Nd:YAG laser operating at 355 nm lasing at low threshold fluences (≈ 4 µJ cm−2) is obtained with instrumentally limited linewidths corresponding to Q > 18000. Lasing in microspheres composed of blends of both CPs coupled by Förster resonant energy transfer (FRET), on the other hand, is observed at extremely low threshold fluences down to ≈ 0.5 µJ cm−2. Spherical structures based on appropriate blends of CPs are therefore promising candidates in the search for low‐threshold organic microlasers excited by light‐emitting diodes or diode lasers or for ultrasensitive optical sensing.

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Silica hollow bottle resonators for use as whispering gallery mode based chemical sensors

Cited by 34 publications

References 39 publications

Whispering Gallery Mode Optical Microresonators: Structures and Sensing Applications

Whispering Gallery Mode Optical Microresonators: Structures and Sensing Applications

Optical Microbottle Resonators for Sensing

High Q Ultra‐Low Threshold Lasing in Conjugated Polymer Blend Microspheres Promoted by FRET

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