Detail publikace

A Sub-nL Chip Calorimeter and Its Application to the Measurement of the Photothermal Transduction Efficiency of Plasmonic Nanoparticles

NI, S. BU, Y. ZHU, H. NEUŽIL, P. YOBAS, L.

Originální název

A Sub-nL Chip Calorimeter and Its Application to the Measurement of the Photothermal Transduction Efficiency of Plasmonic Nanoparticles

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

Here, we introduce a microchip for differential measurements of aqueous samples in twin calorimetric arms with a sub-nL enclosed space. Each arm features a fluidic microchannel located in close proximity to a thin-film resistance thermometer and heater patterned on a low-stress SiN membrane held over a Si cavity with suspension beams. The chip exhibits a rapid response with a thermal time constant of less than 10 ms in atmosphere and a residual thermal conductance below 6 mu W.K-1, one of the lowest reported and accounts for the excellent sensitivity registered in vacuum up to 11 V.W-1. These values are in good agreement with those ones predicted by modeling using finite element method, lumped-capacitance analysis, and calorimeter electrothermal circuit simulation together with the measurement system. Long suspension beams in each arm ensure uniform temperature maintained across its membrane as revealed by the fluorescence-based melting curve analysis. We share the specific heat capacity values of water, glycerin, and mineral oil accurately measured by the chip. Lastly, we demonstrate the chip calorimeter utility on the measurement of the photothermal transduction efficiency of plasmonic nanoparticles, which makes our study further unique in expanding the applications of chip calorimeters.

Klíčová slova

Calorimetry; microelectromechanical systems; microfabrication; nanoparticles; photothermal effects; plasmonic

Autoři

NI, S.; BU, Y.; ZHU, H.; NEUŽIL, P.; YOBAS, L.

Vydáno

1. 10. 2021

Nakladatel

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC

Místo

PISCATAWAY

ISSN

1057-7157

Periodikum

JOURNAL OF MICROELECTROMECHANICAL SYSTEMS

Ročník

30

Číslo

5

Stát

Spojené státy americké

Strany od

759

Strany do

769

Strany počet

11

URL

https://ieeexplore.ieee.org/document/9494100

BibTex

@article{BUT172855,
  author="NI, S. and BU, Y. and ZHU, H. and NEUŽIL, P. and YOBAS, L.",
  title="A Sub-nL Chip Calorimeter and Its Application to the Measurement of the Photothermal Transduction Efficiency of Plasmonic Nanoparticles",
  journal="JOURNAL OF MICROELECTROMECHANICAL SYSTEMS",
  year="2021",
  volume="30",
  number="5",
  pages="759--769",
  doi="10.1109/JMEMS.2021.3096524",
  issn="1057-7157",
  url="https://ieeexplore.ieee.org/document/9494100"
}