Nanotechnology Core Facility

The Nanotechnology Core Facility (NCF), located in the Engineering Research Facility (ERF) building on the University of Illinois at Chicago campus, is a versatile MEMS/Nano facility and is accessible to both academic non-profit and industrial researchers.

The NCF enables research by providing access, training, service and process guidance on fabrication and characterization equipment. As a research and development laboratory, NCF is dedicated to application of integrated circuit and fiber optic technology to improve manufacturing methods for MEMS/Nano devices, BioMEMS, Microfluidic, Electromechanical, Mechanical, Chemical, Optical, Photonic and multi-functional devices, some of which have previously been built by more traditional techniques.

Notice to all Research Resources Center Customers

In order to minimize COVID-19 spread, the Research Resources Center, Nanotechnology Core Facility is implementing the following temporary mandatory guidelines for using this core:

  • All customers entering the core space must wear new, clean gloves
  • If there is a need to remove gloves, wash your hands with soap frequently and for at least 20 seconds. Do not touch your face or other individuals. Replace gloves as soon as possible
  • Instead of shaking hands, exchange greetings with a wave, bow, or nod
  • Try to keep at least one meter/three feet distance between yourself and others
  • Disinfect anything you used during your visit with 70% ETOH after every use
  • Clean and disinfect high-touch surfaces such as clean room entrance door
  • Covering your coughs/sneezes with a tissue, dispose of the tissue appropriately

If you have any flu like symptoms (e.g., fever, cough, shortness of breath) please do not use the core services. You should stay home and follow the appropriate guidelines as indicated by the Illinois Department of Public Health (IDPH) – http://www.dph.illinois.gov/topics-services/diseases-and-conditions/diseases-a-z-list/coronavirus.

Overview

Equipment is available for: Photolithography, Thin Film Deposition (metals, semiconductors, and dielectrics) and etching, sample characterization (electrical, optical, and surface), dicing and lead attachment, and Computer Aided Design (CAD) workstations.

We are a research and development laboratory at the University of Illinois at Chicago. It is dedicated to the application of ‘chip making’ technology to improve manufacturing methods for electromechanical, mechanical, chemical, optical and multi-functional devices which are currently being produced with less efficient techniques. The Laboratory is located on the University of Illinois Chicago campus, just west of Chicago’s Loop. The NCF staff consists of 22 experienced researchers who are also faculty members at UIC or UIUC, a full-time laboratory manager, and graduate students to assist in training new users. The laboratory consists of a three thousand square foot clean room subdivided into five bays and an equal device characterization area. Over two and a half million dollars of equipment is installed in the UIC clean rooms. Approximately one and a half million dollars of that amount has been used to acquire new equipment at the cutting edge of microfabrication technology. Unlike highly automated industrial production equipment, equipment within the Center is flexible and multipurpose in function. Cleanroom equipment has been carefully chosen to provide strong capability within the thrust areas of BioMEMS, High-Frequency MEMS, MEMS Process Analysis and Development, Microactuators/Microfluidics, and Microsensors/Miniature Analytical Instruments. The clean room is divided into five bays to provide workspace for various functions including physical vapor deposition (PVD), chemical vapor deposition (CVD), plasma enhanced CVD (PECVD), wet and dry etching, surface characterization, and top and bottom lithography.

The lithography capabilities include both a Raith 150 Electron Beam System as well as a Nanoscribe 3D Laser System for direct feature writing at the nanometer level.  Standard positive and negative photoresist lithography equipment are available. The NFC has both a Karl Suss MA6/BA6 and a MJB3 Infrared aligner for ‘top to bottom’ alignment of masks to silicon wafers. This capability is especially useful when making sensors, membranes, and three-dimensional structures. NFC users have limited access to an OAI Infrared aligner which can expose 4″ wafers in the EECS Undergraduate clean room.

The PVD capabilities include a Varian multi-source e-beam system with rotating planetaries for 2″, 3″, and 4″ wafers; and a CVC system with 2 e-beam guns, 2 US sputtering guns, a thermal source, and ion beam cleaning of the substrate.

The LPCVD area consists of a refurbished four-stack furnace made by Process Technology configured for silicon nitride, LTO, polysilicon, and metal CVD. An important feature of the LPCVD system is that variable stoichiometry films may be produced for optical waveguides. The plasma enhanced CVD capabilities are provided by a Trion deposition station with load-lock under computer control, which can provide films of silicon nitride, silicon dioxide, silicon oxynitride, diamond like diamond structure carbon and silicon carbide. There also is a four stack Brooks furnace for wet/dry Si wafer oxidation and diffusion.

The wet chemical etching facilities are comprehensive, consisting of an assortment of anisotropic, isotropic and electrochemical etching equipment for semiconductors, metals and dielectrics. Modutek’s KOH Silicon Etch Tank is designed to decrease impurities, and unwanted byproducts due to advanced welding techniques with PFA sheet material. A few notable design features include the following: manual cover with overlapping seal which minimizes water lost and no concentration deficiencies over long etch time.

Plasma etching includes deep reactive ion etching in an Oxford PlasmaLab 100 System employing the Bosch process for both 3 and 4 inch silicon wafer etching as well as reactive ion etching and sputter etching in a Trion RIE/ICP-RIE with both load-lock and computer control with six mass flow controllers to provide a versatile array of gas compositions. A host of ‘standard’ etching recipes utilized regularly by the semiconductor industry and experimental recipes for non-standard materials will be employed.  A Harrick Barrel Plasma System is available for both plasma cleaning, descumming, and etching.

The inspection and characterization equipment include: a Zeiss optical microscope with large monitor HD video display and line measurement system, Nikon optical microscope with a Boeckler line measurement system, a KLA-Tencor P7 surface step profiler, a Gaertner ellipsometer, a Bruker-Nano Dimension Icon Atomic Force Microscope with both mechanical, electrical and electrochemical capabilities, a Digital Instruments Nanoscope III Scanning Tunneling and Atomic Force Microscope with Electrochemical capability, and a Bruker-Nano Contour GT-K Optical profiler. The Tencor P7 provides large area surface topography measurements, with nanometer resolution over scans of several centimeters. This device is extremely valuable in characterizing the geometry of micro-machined structures to an accuracy of about 5 nm. The Bruker Contour provides soft film non-contact surface topography measurements at the same accuracy.

In the NCF Packaging Laboratory (class 100,000), there are additional material characterization equipment including a Bruker Discover 8 XRD system, a Sonoscan Gen6 Surface Acoustic Scanning Microscope, a Malvern Dynamic Laser Scattering system and both TA Instruments’ Differential Scanning Calorimeter and  Thermo-Gravimetric Analyzer. For most packaging applications, equipment includes a Disco wafer saw with superior 6 inch wafer and surface video capabilities, a Microautomation 4 inch wafer saw, both a West Bond ball and a wedge wire bonder, and a Modular Process Technology Rapid Thermal Wafer Processor. There are two Parylene coating systems for both N and C as well as a Thermionics VE-100 E-beam/thermal Vacuum Evaporator for esoteric materials deposition.  Surface etching and modifications are accomplished with a Tykma Laser Marking system with computer control software. Specialty microscopes include a Keyence VHX6000 with both low and high magnification tube lens systems and adjustable viewing angle.

Mission

The primary function of the NCF is to provide R&D expertise and service support to the research efforts of both University faculty and external commercial companies in the wide-ranging areas of MEMS/NEMS, electronic and photonic material device design and fabrication, using all aspects of photolithography, deposition by electron beam, DC/RF sputtering, and plasma systems as well as low-pressure chemical vapor deposition, deep reactive ion material etching and wafer thermal oxidation.  The NTC also provides instrument training on the systems above as well as most film characterization techniques including XRD, SEM, AFM, Optical Profilometry, Step Profilometry, Ellipsometry, Dynamic Laser Scattering, Thermogravimetric Analysis, Differential Scanning Calorimetry, Rapid Thermal Processing and Scanning Acoustical Microscopy. Rudimentary device packaging services such as laser marking, wafer saw cutting and wire bonding can be provided by request.

Getting Started

Safety Exam

In order to become an NCF user, you will first need to pass the NCF safety exam. A copy of the exam can be found on the NCF Policies and Pricing page on the RRC website. The exam can be taken between the hours of 9am and 3pm, Monday through Friday at the NCF main office in room 3064 of the Engineering Research Facility (ERF), located at 842 W Taylor St, Chicago, IL, 60607. To pass the exam, you will have to answer more than 80% of the questions correctly. You will be notified of the results within 48 hours. If you do not pass the exam, you’re welcome to retake it another time.

 

After the Exam

To use our facility, you will need an iLab account. Information on how to setup an account can be found at https://rrc.uic.edu/get-started/user-registration/

 

Facility and Cleanroom Access

For UIC affiliated individuals, facility access will be granted through our swipe card access system. Non-UIC affiliated individuals will need to obtain a visitor card from the UIC ID center. The visitor card request form can be obtained at the NCF main office. Swipe card access to the facility will be granted once you have your visitor card. You can always knock on the door of room 3064 ERF if you do not have your iCard.

For cleanroom access, you will need to obtain a transponder. You can come to the NCF main office, between 9am and 5pm, Monday through Friday to get a transponder which is used to track your cleanroom usage. The cleanroom access fee is $34/hr for academic users, and $50/hr for industrial users. For UIC affiliated individuals, you must bring with you, your iCard and your iLab payment source number. Non-UIC affiliated individuals must have their iLab payment source number with them. Please note that the owner of the payment source must grant you permission to use said payment source on iLab. If you will not be using the cleanroom, you may proceed to the next section.

 

Requesting Trainings

You can request trainings on instruments through the Request Services tab on iLab. Please make sure you specify which instrument you want to get trained on when you fill out the request. The training fee is $65/session for academic users, and $100/session for industrial users.

The standard number of trainings for instruments is 3, although some simple instruments will require only 2 sessions. The first is a session with a member of NCF staff where you are shown how the instrument works. The second training can be with NCF staff or an authorized user, usually a lab mate, where you will have hands-on practice. The third training is a checkout session with a member of NCF staff where you are tested on how to use the instrument and any specific operational/safety points. Simple instruments will only require the initial session and the checkout.

 

Instrument Usage

Please refer to the NCF Policies and Pricing on the RRC website for information on our usage policies.

 

Work Service

NCF performs work service requests for those who need to use our facility for one of experiments or sample characterizations and would not want to go through the safety exam and training process. You can request a work service through the Request Services tab on iLab. Please make sure to specify that you require a work service and on what instrument. Work service request are charged at $100/hr of work.

 

You can refer to the NCF FAQs page on the RRC website or contact NCF Director, Dr. Seyoun An (syan11@uic.edu) with additional questions.