Publication detail

Droplet-based differential microcalorimeter for real-time energy balance monitoring

FENG, J. PODEŠVA, P. ZHU, H. PEKÁREK, J. MAYORGA-MARTINEZ, C. CHANG, H. PUMERA, M. NEUŽIL, P.

Original Title

Droplet-based differential microcalorimeter for real-time energy balance monitoring

Type

journal article in Web of Science

Language

English

Original Abstract

Microcalorimeters have been widely used for characterizing molecular interactions in physical, chemical and biological research. Here, we report on a droplet-based micromachined calorimeter for real-time energy balance monitoring. The microcalorimeter was fabricated by a single lithography process and wafer dicing using glass substrate with a diameter and a thickness of approximate to 100 mm and approximate to 100 mu m, respectively. The sample with volume of approximate to 0.5 mu L was placed on the microcalorimeter and covered with mineral oil to avoid evaporation. The microcalorimeter was operated in differential mode having the temperature and power resolution of approximate to 148 mu k and approximate to 42 nW, respectively. With this system, we monitored the energy balance of H2O2 decomposition catalyzed by few self-propelled Pt microrobots. Such a simple microcalorimeter has tremendous potential for chemical and biological research such as monitoring the energy balance of living cells or microorganisms and correlating the energy changes with their activities and status.

Keywords

Droplet-based ultrasensitive microcalorimeter; Differential mode; Energy balance monitoring; Thermodynamics characterization; H2O2 decomposition

Authors

FENG, J.; PODEŠVA, P.; ZHU, H.; PEKÁREK, J.; MAYORGA-MARTINEZ, C.; CHANG, H.; PUMERA, M.; NEUŽIL, P.

Released

1. 6. 2020

Publisher

ELSEVIER SCIENCE SA

Location

LAUSANNE

ISBN

0925-4005

Periodical

Sensors and Actuators B: Chemical

Year of study

312

Number

NA

State

Swiss Confederation

Pages from

1

Pages to

7

Pages count

7

URL

https://www.sciencedirect.com/science/article/pii/S0925400520303154

BibTex

@article{BUT163972,
  author="FENG, J. and PODEŠVA, P. and ZHU, H. and PEKÁREK, J. and MAYORGA-MARTINEZ, C. and CHANG, H. and PUMERA, M. and NEUŽIL, P.",
  title="Droplet-based differential microcalorimeter for real-time energy balance monitoring",
  journal="Sensors and Actuators B: Chemical",
  year="2020",
  volume="312",
  number="NA",
  pages="1--7",
  doi="10.1016/j.snb.2020.127967",
  issn="0925-4005",
  url="https://www.sciencedirect.com/science/article/pii/S0925400520303154"
}