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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Biomicrofluidics
2016 ; 10
(4
): 044101
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Introducing natural thermoplastic shellac to microfluidics: A green fabrication
method for point-of-care devices
#MMPMID27478525
Lausecker R
; Badilita V
; Gleißner U
; Wallrabe U
Biomicrofluidics
2016[Jul]; 10
(4
): 044101
PMID27478525
show ga
We present a sustainable fabrication method for cheap point-of-care microfluidic
systems, employing hot embossing of natural shellac as a key feature of an
energy-efficient fabrication method that exclusively uses renewable materials as
consumables. Shellac is a low-cost renewable biomaterial that features medium
hydrophilicity (e.g., a water contact angle of ca. 73°) and a high chemical
stability with respect to common solvents such as cyclohexane or toluene,
rendering it an interesting candidate for low-cost microfluidics and a competitor
to well-known systems such as paper-based or polydimethylsiloxane-based
microfluidics. Moreover, its high replication accuracy for small features down to
30??m lateral feature size and its ability to form smooth surfaces (surface
roughness Ra ?=?29?nm) at low embossing temperatures (glass transition
temperature Tg ?=?42.2?°C) enable energy-efficient hot embossing of microfluidic
structures. Proof-of-concept for the implementation of shellac hot embossing as a
green fabrication method for microfluidic systems is demonstrated through the
successful fabrication of a microfluidic test setup and the assessment of its
resource consumption.