Micro-differential scanning calorimeter for liquid biological samples.
Rev Sci Instrum
; 87(10): 105005, 2016 Oct.
Article
em En
| MEDLINE
| ID: mdl-27802741
ABSTRACT
We developed an ultrasensitive micro-DSC (differential scanning calorimeter) for liquid protein sample characterization. This design integrated vanadium oxide thermistors and flexible polymer substrates with microfluidics chambers to achieve a high sensitivity (6 V/W), low thermal conductivity (0.7 mW/K), high power resolutions (40 nW), and well-defined liquid volume (1 µl) calorimeter sensor in a compact and cost-effective way. We further demonstrated the performance of the sensor with lysozyme unfolding. The measured transition temperature and enthalpy change were in accordance with the previous literature data. This micro-DSC could potentially raise the prospect of high-throughput biochemical measurement by parallel operation with miniaturized sample consumption.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Técnicas Analíticas Microfluídicas
/
Dispositivos Lab-On-A-Chip
Idioma:
En
Revista:
Rev Sci Instrum
Ano de publicação:
2016
Tipo de documento:
Article
País de afiliação:
Estados Unidos