Poly(dimethylsiloxane) (PDMS)Poly(dimethylsiloxane) stamps for microcontact printing with polar inks,which no longer need to be reactivated after each printing step, are revealed. The silicone surface is modified by linking a hydrophilic polyethylene glycol chain to SiOH groups created on the surface ...
1997a). The important feature of using PDMS as the feature replication mold is its flexibility and its ability to achieve conformal contact between the PDMS stamp and the substrate. The mold can be used to replicate patterns on a nonplanar surface. These techniques are able to generate features...
Polydimethylsiloxane (PDMS, molecular formula (C2H6OSi)n, density 965 kg/m3, boiling point: < 200℃, shear modulus between 100 kPa and 3 MPa, loss tangent less than 0.001) is a viscoelastic polymer (elastomer). PDMS is widely used in microfluidic technology thanks to some of its unique ...
3D micro patterning on a concave substrate for creating the replica of a cylindrical PDMS stamp Microelectron. Eng., 98 (2012), pp. 540-543 View in ScopusGoogle Scholar 24. K. Hosokawa, K. Sato, N. Ichikawa, M. Maeda Power-free poly(dimethylsiloxane) microfluidic devices for gold nanoparti...
We find negatively charged SDS predominately exists on metallic SWNTs rather than on semiconducting SWNTs; it strongly combines with positively charged H atoms in amine groups on PDMS and, thus, can be peeled off and separated using an amine-functionalized PDMS stamp together with metallic SWNT...
While the effect of several parameters such as time of contact and ageing of prepatterned surfaces seem to give comprehensible effects on the oligomer deposition, other parameters such as the stamp's shape give paradoxical but reproducible results on the deposited quantity. The results provide us ...
The invention provides a method of etching the surface topography of polydimethylsiloxane (PDMS) by oxygen plasmas. The method comprises the steps of placing a prepared PDMS stamp in an oxygen plasma atmosphere, and etching the PDMS stamp to obtain a surface microstructure. Moreover, a method of...
The method for patterning a poly(dimethylsiloxane) stamp by using UV comprises the steps of: (a) preparing a poly(dimethylsiloxane)(PDMS) stamp(3) from a master; (b) irradiating UV(254 nm) on a substrate(4) using the PDMS stamp(3) so as to form PDMS patterns; and (c) performing ...
Aligning elastomeric stamps made of PolyDiMethylSiloxane-based (PDMS) materials is not easy due to the deformability of the stamp and its high adhesion on flat surfaces.J. ChalmeauC. ThibaultF. CarcenacC. VieuDigest of Papers Microprocesses and Nanotechnology 2007: 2007 International Microprocesses...
However, the PDMS material made from commercial Sylgard 184 as precursor is not suitable for nanoimprint applications because of two significant drawbacks. Firstly, its curing typically requires hours, which is impractical as a resist material for NIL. Secondly, the cured material has a low modulus...