Design and Development of a Bimodal Optical Instrument for Simultaneous Vibrational Spectroscopy Measurements
Vibrational spectroscopy techniques are widely used in analytical chemistry, physics and biology. The most prominent techniques are Raman and Fourier-transform infrared spectroscopy (FTIR). Combining both techniques delivers complementary information of the test sample. We present the design, constr...
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| Format: | Article |
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Multidisciplinary Digital Publishing Institute
2022
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| Online Access: | https://hdl.handle.net/1721.1/143553 |
| _version_ | 1811096368180101120 |
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| author | Arévalo, Laura A. O’Brien, Stephen A. Lopez, Eneko Singh, Gajendra Pratap Seifert, Andreas |
| author2 | Singapore-MIT Alliance in Research and Technology (SMART) |
| author_facet | Singapore-MIT Alliance in Research and Technology (SMART) Arévalo, Laura A. O’Brien, Stephen A. Lopez, Eneko Singh, Gajendra Pratap Seifert, Andreas |
| author_sort | Arévalo, Laura A. |
| collection | MIT |
| description | Vibrational spectroscopy techniques are widely used in analytical chemistry, physics and biology. The most prominent techniques are Raman and Fourier-transform infrared spectroscopy (FTIR). Combining both techniques delivers complementary information of the test sample. We present the design, construction, and calibration of a novel bimodal spectroscopy system featuring both Raman and infrared measurements simultaneously on the same sample without mutual interference. The optomechanical design provides a modular flexible system for solid and liquid samples and different configurations for Raman. As a novel feature, the Raman module can be operated off-axis for optical sectioning. The calibrated system demonstrates high sensitivity, precision, and resolution for simultaneous operation of both techniques and shows excellent calibration curves with coefficients of determination greater than 0.96. We demonstrate the ability to simultaneously measure Raman and infrared spectra of complex biological material using bovine serum albumin. The performance competes with commercial systems; moreover, it presents the additional advantage of simultaneously operating Raman and infrared techniques. To the best of our knowledge, it is the first demonstration of a combined Raman-infrared system that can analyze the same sample volume and obtain optically sectioned Raman signals. Additionally, quantitative comparison of confocality of backscattering micro-Raman and off-axis Raman was performed for the first time. |
| first_indexed | 2024-09-23T16:42:42Z |
| format | Article |
| id | mit-1721.1/143553 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T16:42:42Z |
| publishDate | 2022 |
| publisher | Multidisciplinary Digital Publishing Institute |
| record_format | dspace |
| spelling | mit-1721.1/1435532023-01-11T21:35:03Z Design and Development of a Bimodal Optical Instrument for Simultaneous Vibrational Spectroscopy Measurements Arévalo, Laura A. O’Brien, Stephen A. Lopez, Eneko Singh, Gajendra Pratap Seifert, Andreas Singapore-MIT Alliance in Research and Technology (SMART) Vibrational spectroscopy techniques are widely used in analytical chemistry, physics and biology. The most prominent techniques are Raman and Fourier-transform infrared spectroscopy (FTIR). Combining both techniques delivers complementary information of the test sample. We present the design, construction, and calibration of a novel bimodal spectroscopy system featuring both Raman and infrared measurements simultaneously on the same sample without mutual interference. The optomechanical design provides a modular flexible system for solid and liquid samples and different configurations for Raman. As a novel feature, the Raman module can be operated off-axis for optical sectioning. The calibrated system demonstrates high sensitivity, precision, and resolution for simultaneous operation of both techniques and shows excellent calibration curves with coefficients of determination greater than 0.96. We demonstrate the ability to simultaneously measure Raman and infrared spectra of complex biological material using bovine serum albumin. The performance competes with commercial systems; moreover, it presents the additional advantage of simultaneously operating Raman and infrared techniques. To the best of our knowledge, it is the first demonstration of a combined Raman-infrared system that can analyze the same sample volume and obtain optically sectioned Raman signals. Additionally, quantitative comparison of confocality of backscattering micro-Raman and off-axis Raman was performed for the first time. 2022-06-27T13:47:28Z 2022-06-27T13:47:28Z 2022-06-20 2022-06-23T12:11:18Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/143553 International Journal of Molecular Sciences 23 (12): 6834 (2022) PUBLISHER_CC http://dx.doi.org/10.3390/ijms23126834 Creative Commons Attribution https://creativecommons.org/licenses/by/4.0/ application/pdf Multidisciplinary Digital Publishing Institute Multidisciplinary Digital Publishing Institute |
| spellingShingle | Arévalo, Laura A. O’Brien, Stephen A. Lopez, Eneko Singh, Gajendra Pratap Seifert, Andreas Design and Development of a Bimodal Optical Instrument for Simultaneous Vibrational Spectroscopy Measurements |
| title | Design and Development of a Bimodal Optical Instrument for Simultaneous Vibrational Spectroscopy Measurements |
| title_full | Design and Development of a Bimodal Optical Instrument for Simultaneous Vibrational Spectroscopy Measurements |
| title_fullStr | Design and Development of a Bimodal Optical Instrument for Simultaneous Vibrational Spectroscopy Measurements |
| title_full_unstemmed | Design and Development of a Bimodal Optical Instrument for Simultaneous Vibrational Spectroscopy Measurements |
| title_short | Design and Development of a Bimodal Optical Instrument for Simultaneous Vibrational Spectroscopy Measurements |
| title_sort | design and development of a bimodal optical instrument for simultaneous vibrational spectroscopy measurements |
| url | https://hdl.handle.net/1721.1/143553 |
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