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3D printed liquid cooling interface for a deep-UV-LED-based flow-through absorbance detector
Citation
Lam, SC and Gupta, V and Haddad, PR and Paull, B, 3D printed liquid cooling interface for a deep-UV-LED-based flow-through absorbance detector, Analytical Chemistry, 91, (14) pp. 8795−8800. ISSN 0003-2700 (2019) [Refereed Article]
Copyright Statement
Copyright 2019 American Chemical Society
DOI: doi:10.1021/acs.analchem.9b01335
Abstract
Ultraviolet (UV)-light-emitting diodes (LEDs) are now widely used in analytical absorbance-based detectors; as compared to conventional UV lamps, they offer lower cost, faster response time, and higher photon conversion efficiency. However, current generation deep-UV-LEDs produce excess heat when operated at normal operating currents, which affects output stability and reduces their overall performance and lifespan. Herein a 3D printed liquid cooling interface has been developed for a deep-UV-LED-based optical detector, for capillary format flow-through detection. The interface consists of a circular channel that is tightly wrapped around the LED to provide active liquid cooling. The design also facilitates easy plug-and-play assembly of the various essential components of the detector: specifically, a 255 nm UV-LED, a capillary Z-cell, and a broadband UV photodiode (PD). The unique liquid cooling interface improved the performance of the detector by reducing the LED temperature up to 22°C, increasing the spectral output up to 34%, decreasing the required stabilization time by up to 6-fold, and reducing the baseline noise and limits of detection (LODs) by a factor of 2. The detector was successfully used within a capillary HPLC system and could offer a miniaturized, rapidly stabilized, highly sensitive, and low-cost alternative to conventional UV detectors.
Item Details
| Item Type: | Refereed Article |
|---|---|
| Keywords: | deep-UV-LED, liquid cooling, 3D printing, capillary LC, detector |
| Research Division: | Chemical Sciences |
| Research Group: | Analytical chemistry |
| Research Field: | Separation science |
| Objective Division: | Expanding Knowledge |
| Objective Group: | Expanding knowledge |
| Objective Field: | Expanding knowledge in the chemical sciences |
| UTAS Author: | Lam, SC (Mr Shing Chung Lam) |
| UTAS Author: | Gupta, V (Dr Vipul Gupta) |
| UTAS Author: | Haddad, PR (Professor Paul Haddad) |
| UTAS Author: | Paull, B (Professor Brett Paull) |
| ID Code: | 135078 |
| Year Published: | 2019 |
| Web of Science® Times Cited: | 11 |
| Deposited By: | Chemistry |
| Deposited On: | 2019-09-26 |
| Last Modified: | 2019-11-04 |
| Downloads: | 0 |
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