Optical lithography

SBQMI nanofab is equipped for both contact (physical glass-mask) and maskless (software mask) photolithography. The former is supported by a Neutronix-Quintel model NXQ4006 mask-aligner with a 350W high-pressure mercury lamp, housed in the Class ISO-6 yellow room within the recently renovated cleanroom space, and the latter is supported by the industry-standard Heidelberg model MLA150 maskless tool with laser UV source, housed in the Class ISO-5 yellow room. An extracted wet bench, hot-plates and spinners, situated within the Class ISO-6 yellow cleanroom are also dedicated to photolithography. A wide range of positive and negative resists are supported, including SU-8. The facility has been also recently equipped with two Nikon optical microscopes with camera and metrology capability used for inspection that can be found in the cleanroom.


JBX-8100FS imageJEOL JBX-8100FS Electron-beam lithography system

JBX-8100FS 100kV EBL tool capable of writing features as small as 5nm on wafers up to 200mm.

Location: Brim65 (basement of new wing)



MLA150 Heidelberg maskless lithography system

Location: ISO-5 yellow room

The Heidelberg MLA150 maskless lithography system allows fast direct writing of patterns as precise as 1 micron.  It can write on samples as small as 1×1 cm and up to 200 mm wafers.



NxQ4006: 100 mm mask (currently single side) aligner

Location: ISO-6 yellow room

This mask aligner is a mostly manual system that accepts pieces as small as 7x7mm and wafers up to 100mm diameter.  It accepts mask plates 5″x5″ (125x125mm) with the main mask holder but has a holder that can accept mask plates as small as 3″x3″ (75x75mm).  It’s optics delivers both 365nm and 405nm light.  It is very easy to use for alignment.  Although expandable to allow double-side alignment, it does not currently have the adapter to allow it.


Vanguard Photonic Wirebonder

Location: ISO 6 Yellow room

This tool allows 3D, 2 photon lithography. It’s main purpose is to create waveguides to mate different photonic circuits together.



Image - wetbench in ISO-5 room HEADWAY PWM50: 200mm resist spinner

Location: ISO-5 yellow room wetbench

Currently reserved for spinning of Electron Beam Resists only.  The spinner can accommodate wafers up to 200mm diameter.



Headway spinnerHEADWAY PWM32: Photoresist spinner

Location: ISO-6 yellow room

Currently reserved for spinning of traditional photoresists such as AZ5214, S1813, etc.

This programmable spinner allows spinning various photoresists on wafers of various sizes. The maximum size wafer that can be accommodated by this spinner is a 6″ wafer.  See video on how to install the aluminum foil.


WS-400-6NPP-LITE_sLAURELL WS-400-6NPP-LITE: Photoresist spinner

Location: currently offline

This programmable spinner allows spinning of various photoresists on wafers of various sizes.  The maximum size wafer that can be accommodated by this spinner is a 6″ wafer.