Open AccessAdsorption and detection of microparticles using silicon microcantilevers
Author(s) -
Wilson Ombati Nyang’au,
Gerry Hamdana,
Andi Setiono,
Maik Bertke,
Jiushuai Xu,
Michael Fahrbach,
Prabowo Puranto,
Hutomo Suryo Wasisto,
Erwin Peiner
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1319/1/012010
Subject(s) - adsorption , cantilever , wetting , substrate (aquarium) , silicon , materials science , contact angle , nanotechnology , particle (ecology) , chemical engineering , composite material , chemistry , optoelectronics , organic chemistry , oceanography , engineering , geology
This paper presents a droplet-based method for detecting the mass of fluid-based microparticles. The degree of wettability on silicon-based substrates is therefore investigated for enhanced adsorption of microparticles. Contact angles of 47.3° (pre-treatment) and below 9° (enhanced hydrophilicity upon oxygen plasma treatment) have been realized. Segments of mono-layered particles on the substrate and the possibility of homogenous distribution are also demonstrated. The volume and the surface-contact area of droplets on the substrate have been determined, hence empowering an envisaged optimized design of a particle-well cantilever. The determination of the mass of adsorbed microparticles on the cantilever has also been investigated.