One-step Multi-depth Polystyrene Molds for Pdms Soft-lithography through Laser-induced Bumping

نویسندگان

  • Huawei Li
  • Ian G. Foulds
چکیده

In this article, we report a mask-less and cleanroom-independent technique to fabricate Polydimethylsiloxane (PDMS)-based multi-depth microfluidic devices using a polystyrene (PS) mold with laser-induced multi-height bump patterns for PDMS soft-lithography. This technique offers a rapid and low-cost alternative to conventional PDMS mold creation, which requires more complicated mask-based photolithography process, and it also eliminates the cumbersome precise alignment/bonding of microchannel layers to fabricate a 3D structure [1]. This paper reports the first use of this new laser bumping technique for creating multi-height molds for soft-lithography.

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Fabrication of flexible mold for hybrid nanoimprint-soft lithography

0167-9317/$ see front matter 2011 Elsevier B.V. A doi:10.1016/j.mee.2010.12.107 ⇑ Corresponding author. E-mail address: [email protected] (J We fabricated molds consisting of features in rigid UV-cured resist on an elastic poly(dimethylsiloxane) (PDMS) support for hybrid nanoimprint-soft lithography. The molds were duplicated through coating and curing a UV-curable resist onto a pol...

متن کامل

Modulating two-dimensional non-close-packed colloidal crystal arrays by deformable soft lithography.

We report a simple method to fabricate two-dimensional (2D) periodic non-close-packed (ncp) arrays of colloidal microspheres with controllable lattice spacing, lattice structure, and pattern arrangement. This method combines soft lithography technique with controlled deformation of polydimethylsiloxane (PDMS) elastomer to convert 2D hexagonal close-packed (hcp) silica microsphere arrays into nc...

متن کامل

High density nanostructure transfer in soft molding using polyurethane acrylate molds and polyelectrolyte multilayers

Here we present an alternative, new, unconventional lithographic technique developed to create dense and multilevel nanostructure pattern transfer using a highly accurate polyurethane acrylate (PU, MINS101m, Minuta Tech.) mold and a polyelectrolyte multilayer as the adhesion promotion layer. Specifically, we demonstrate the pattern transfer of periodic 80 nm lines with 400 nm height and complex...

متن کامل

Prototyping of masks, masters, and stamps/molds for soft lithography using an office printer and photographic reduction

This paper describes a practical method for the fabrication of photomasks, masters, and stamps/molds used in soft lithography that minimizes the need for specialized equipment. In this method, CAD files are first printed onto paper using an office printer with resolution of 600 dots/in. Photographic reduction of these printed patterns transfers the images onto 35-mm film or microfiche. These ph...

متن کامل

Rapid fabrication of microfluidic PDMS devices from reusable PDMS molds using laser ablation

The conventional fabrication methods for microfluidic devices require cleanroom processes that are costly and time-consuming. We present a novel, facile, and low-cost method for rapid fabrication of polydimethylsiloxane (PDMS) molds and devices. The method consists of three main fabrication steps: female mold (FM), male mold (MM), and chip fabrication. We use a CO2 laser cutter to pattern a thi...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2012