Time-resolved Raman spectroscopy from reacting optically levitated microdroplets

Carls, Joseph C.; Moncivais, G; Brock, J. R.

doi:10.1364/ao.29.002913

Cited by 28 publications

(16 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…l v l 6 . 2 5 --2 8 C arls et al 29 observed the absorption of D 2 0 vapour by an optically levitated glycerol droplet. However, their spectra did not show any structural resonances.…”

Section: Introductionmentioning

confidence: 98%

Observation of morphology‐dependent input and output resonances in time‐dependent Raman spectra of optically levitated microdroplets

Schaschek

Popp

Kiefer

1993

J Raman Spectroscopy

View full text Add to dashboard Cite

Using a highly efficient Raman set-up, which allows a Raman spectrum to be recorded in less than 1 s, morphology-dependent resonances in optically levitated microdroplets of water-glycerol mixtures were studied. In addition to the output resonances, where the Raman frequency coincides with an electromagnetic sphere resonance, input resonances could also be demonstrated. The latter are observed when the evaporating droplet reaches a radius which, together with the wavelength of the incident laser light, fulfils the resonance condition for the cavity modes of a sphere. Preliminary results for droplet size change during evaporation of a particular droplet in the micrometre range are presented.

show abstract

“…l v l 6 . 2 5 --2 8 C arls et al 29 observed the absorption of D 2 0 vapour by an optically levitated glycerol droplet. However, their spectra did not show any structural resonances.…”

Section: Introductionmentioning

confidence: 98%

Observation of morphology‐dependent input and output resonances in time‐dependent Raman spectra of optically levitated microdroplets

Schaschek

Popp

Kiefer

1993

J Raman Spectroscopy

View full text Add to dashboard Cite

show abstract

“…[233] Though no cavity-enhancement is needed for large droplets for this scheme, cavityenhancement could potentially enable pH-determination in sub-micron droplets. [231] Cavityenhanced Raman scattering can then be used to probe chemical composition of the aerosols, [234] including ionic strength, [231] critical parameters for environmental or atmospheric models, and even how the composition of a single droplet changes over time [235] or allow visualization of a phasetranstiion. [236] The high circulating powers due to the cavity-enhancement lend the technique particularly well to non-linear Raman processes.…”

Section: Spectroscopymentioning

confidence: 99%

Optical Microresonators for Sensing and Transduction: A Materials Perspective

et al. 2017

View full text Add to dashboard Cite

Optical microresonators confine light to a particular microscale trajectory, are exquisitely sensitive to their microenvironment, and offer convenient readout of their optical properties. Taken together, this is an immensely attractive combination that makes optical microresonators highly effective as sensors and transducers. Meanwhile, advances in material science, fabrication techniques, and photonic sensing strategies endow optical microresonators with new functionalities, unique transduction mechanisms, and in some cases, unparalleled sensitivities. In this progress report, the operating principles of these sensors are reviewed, and different methods of signal transduction are evaluated. Examples are shown of how choice of materials must be suited to the analyte, and how innovations in fabrication and sensing are coupled together in a mutually reinforcing cycle. A tremendously broad range of capabilities of microresonator sensors is described, from electric and magnetic field sensing to mechanical sensing, from single-molecule detection to imaging and spectroscopy, from operation at high vacuum to in live cells. Emerging sensing capabilities are highlighted and put into context in the field. Future directions are imagined, where the diverse capabilities laid out are combined and advances in scalability and integration are implemented, leading to the creation of a sensor unparalleled in sensitivity and information content.

show abstract

“…In a pioneer work on Raman scattering applied to droplets, Carls et al (1990) investigated the chemical absorption of D 2 O vapor by an acoustically levitated droplet of glycerol (diameter 25 lm). Although the chemical evolution of the droplet could be clearly observed on the Raman spectra, quantitative interpretation remained difficult due to MDR peaks.…”

Section: Spontaneous Raman Scatteringmentioning

confidence: 99%

Temperature and chemical composition of droplets by optical measurement techniques: a state-of-the-art review

2013

View full text Add to dashboard Cite

Time-resolved Raman spectroscopy from reacting optically levitated microdroplets

Cited by 28 publications

References 15 publications

Observation of morphology‐dependent input and output resonances in time‐dependent Raman spectra of optically levitated microdroplets

Observation of morphology‐dependent input and output resonances in time‐dependent Raman spectra of optically levitated microdroplets

Optical Microresonators for Sensing and Transduction: A Materials Perspective

Temperature and chemical composition of droplets by optical measurement techniques: a state-of-the-art review

Contact Info

Product

Resources

About