From mbaran at stanford.edu Wed Jul 1 11:49:36 2009 From: mbaran at stanford.edu (Maureen Baran) Date: Wed, 1 Jul 2009 11:49:36 -0700 Subject: Some of Raja's Treats are still available... Message-ID: <003701c9fa7c$ae4a1870$0ade4950$@edu> Dear All, Raja still have a few items left to sell. I have them at my desk and I will be able to help you purchase them after 1:00P. I am in cubicle # 41 closest to the doors that face the Applied Physics Building. Please remember it's for a very good cause. Maureen Maureen Baran Stanford Nanofabrication Facility Lab Services Administrator mbaran at stanford.edu 650-725-3664 -------------- next part -------------- An HTML attachment was scrubbed... URL: From tdo at stanford.edu Wed Jul 1 14:38:27 2009 From: tdo at stanford.edu (Thomas O'Sullivan) Date: Wed, 01 Jul 2009 14:38:27 -0700 Subject: citric acid Message-ID: <4A4BD753.4070105@stanford.edu> Hi labmembers, Does anyone have a couple hundred mL of citric acid that I could use? I desperately need some tomorrow and the chemical supplier is out of stock. Thanks, Tom From mtang at stanford.edu Thu Jul 2 09:40:11 2009 From: mtang at stanford.edu (Mary Tang) Date: Thu, 02 Jul 2009 09:40:11 -0700 Subject: Fire Extinguisher Training Class, Friday, July 10, 1:30 pm Message-ID: <4A4CE2EB.6070109@stanford.edu> Hi all -- Alison Pena, from the Stanford Fire Marshall's office, will be giving a one hour class on how to deal with lab and other fires. This will be held this Friday, July 10, at 1:30 pm, in Allen 338X. The training will take about one hour and consists of a brief presentation and video, followed by hands-on practice with a fire extinguisher on a controlled burn. It's fun -- and good skill to know in any environment. Preregistration is required, with preference given to active labmembers and building occupants. If interested, send me an email. Thanks for your attention! -- Mary X. Tang, Ph.D. Stanford Nanofabrication Facility CIS Room 136, Mail Code 4070 Stanford, CA 94305 (650)723-9980 mtang at stanford.edu http://snf.stanford.edu From mtang at stanford.edu Sat Jul 4 00:29:57 2009 From: mtang at stanford.edu (Mary Tang) Date: Sat, 04 Jul 2009 00:29:57 -0700 Subject: SNF gowning room sliding door Message-ID: <4A4F04F5.5040106@stanford.edu> Hello weekend warriors -- The sliding door between the gowning room and the lab appears to be acting up. The door, however, can be slid open and shut by hand, so lab access (and safety) are OK. Please do be gentle in sliding the door side to side (it has a breakaway feature when pushed forward.) We have asked Facilities to look at this Monday morning. Thanks for your patience -- Your SNF staff From mtang at stanford.edu Tue Jul 7 10:17:35 2009 From: mtang at stanford.edu (Mary Tang) Date: Tue, 07 Jul 2009 10:17:35 -0700 Subject: Fire Extinguisher Training Class, Friday, July 10, 1:30 pm Message-ID: <4A53832F.7030409@stanford.edu> Hi all -- Alison Pena, from the Stanford Fire Marshall's office, will be giving a one hour class on how to deal with lab and other fires. This will be held this Friday, July 10, at 1:30 pm, in Allen 338X. The training will take about one hour and consists of a brief presentation and video, followed by hands-on practice with a fire extinguisher on a controlled burn. It's fun -- and good skill to know in any environment. Space is still available. If interested, send me an email. Thanks for your attention! -- Mary X. Tang, Ph.D. Stanford Nanofabrication Facility CIS Room 136, Mail Code 4070 Stanford, CA 94305 (650)723-9980 mtang at stanford.edu http://snf.stanford.edu From maloney1 at stanford.edu Tue Jul 7 17:00:37 2009 From: maloney1 at stanford.edu (Michael Maloney) Date: Tue, 7 Jul 2009 17:00:37 -0700 (PDT) Subject: Gasonics Message-ID: <976933540.29125031247011237201.JavaMail.root@zm07.stanford.edu> Hello, I'm looking for anyone who can show m how to use Gasonics Aura asher. You name the date and time and I'll bring the wafers. Many thanks. Mike M (Maloney1) Michael T. Maloney Postdoctoral Scholar Department of Neurology and Neurological Sciences Stanford University School of Medicine P222 MSLS ph: (650) 498-8112 From mtang at stanford.edu Thu Jul 9 10:01:24 2009 From: mtang at stanford.edu (Mary Tang) Date: Thu, 09 Jul 2009 10:01:24 -0700 Subject: Maskless Patterning: Presentation Today (Thurs), 7/9, 1:30 pm, 101X Message-ID: <4A562264.1090503@stanford.edu> Greetings labmembers: Our esteemed Gary Yama is hosting a presentation by Intelligent Micro Patterning, a company that manufactures the SF-100 maskless photolithography system. This is a UV-direct-write system which allows you to expose photosensitive substrates without a mask, with feature sizes down to one micron. The substrate surfaces can be curved as well as flat. This technical presentation will take place today, Thursday, July 9, at 1:30 pm in the Allen 101X auditorium. More information about this system can be found on the company website at: http://www.intelligentmp.com -- Mary X. Tang, Ph.D. Stanford Nanofabrication Facility CIS Room 136, Mail Code 4070 Stanford, CA 94305 (650)723-9980 mtang at stanford.edu http://snf.stanford.edu -------------- next part -------------- An HTML attachment was scrubbed... URL: From gthareja at stanford.edu Thu Jul 9 14:09:27 2009 From: gthareja at stanford.edu (Gaurav Thareja) Date: Thu, 9 Jul 2009 14:09:27 -0700 (PDT) Subject: SNF door stuck Message-ID: <2065577025.139291247173767047.JavaMail.root@zm06.stanford.edu> From ryw at stanford.edu Fri Jul 10 01:21:36 2009 From: ryw at stanford.edu (Yiwen Rong) Date: Fri, 10 Jul 2009 01:21:36 -0700 Subject: ASML mask for optical waveguide Message-ID: Dear Labmembers: Does anyone have simple ridge waveguide structure with 0.5um*1mm, 0.8um*1mm, 1um*1mm sizes? We would like look for such structure for simple test purposes. Yiwen -------------- next part -------------- An HTML attachment was scrubbed... URL: From mtang at stanford.edu Fri Jul 10 16:58:47 2009 From: mtang at stanford.edu (Mary Tang) Date: Fri, 10 Jul 2009 16:58:47 -0700 Subject: Learn to save someone's life! Message-ID: <4A57D5B7.2030800@stanford.edu> Greetings labmembers -- There will be a First Aid/CPR/AED class held at SNF on Wednesday, July 22, from 8 am-4 pm and enrollment will be open to Stanford students and staff here. If you are interested in attending, please send me an email. Mary -- Mary X. Tang, Ph.D. Stanford Nanofabrication Facility CIS Room 136, Mail Code 4070 Stanford, CA 94305 (650)723-9980 mtang at stanford.edu http://snf.stanford.edu From mbaran at stanford.edu Mon Jul 13 11:56:21 2009 From: mbaran at stanford.edu (Maureen Baran) Date: Mon, 13 Jul 2009 11:56:21 -0700 Subject: Process Clinic and the Metal And Furance Quality Circle Meetings Have Been CANCELLED Message-ID: <000801ca03eb$9ce56e40$d6b04ac0$@edu> Dear All, The Process Clinic and the Metal and Furnace Quality Circle Meetings have been cancelled for this week. Please excuse the short notice, they will be back on the schedule soon. Maureen Maureen Baran Stanford Nanofabrication Facility Lab Services Administrator mbaran at stanford.edu 650-725-3664 -------------- next part -------------- An HTML attachment was scrubbed... URL: From peichen at stanford.edu Wed Jul 15 12:45:07 2009 From: peichen at stanford.edu (Pei-Chen Su) Date: Wed, 15 Jul 2009 12:45:07 -0700 (PDT) Subject: University Oral Examination: Pei-Chen Su (Friday, July 17, 3:45pm) In-Reply-To: <1478585649.27691491247686999145.JavaMail.root@zm08.stanford.edu> Message-ID: <1597026001.27691991247687107915.JavaMail.root@zm08.stanford.edu> Thin Film Solid Oxide Fuel Cells for Intermediate Temperature Operation Pei-Chen Su Ph.D. University Oral Exam Department of Mechanical Engineering, Rapid Prototyping Laboratory, Stanford University Advisor: Fritz B. Prinz Date & time: 7/17/2009 3:45 pm (Refreshment 3:30 pm) Location: MERL 2nd Floor Conference Room Abstract Solid oxide fuel cells (SOFCs) efficiently convert chemical energy directly to electricity, with only water as product. SOFCs are typically built in large scale and for stationary applications, due to the high operating temperature (600 to 1000 ?C). Several efforts have focused on reducing the operating temperature, either with thinner electrolyte or enhancement of catalyst/electrolyte interfaces. In particular, thin film electrolyte significantly reduces the ohmic resistance of SOFCs and allows intermediate temperature operations (300 to 500 ?C). In this talk, three fabrication methods for nano thin film electrolyte SOFCs will be presented. In the first, thin-film SOFC structures containing electrolyte membranes of only 50 nm thickness were fabricated with sputtering, lithography, and etching. The micro SOFCs were made of yttria-stabilized zirconia (YSZ) electrolyte and 80 nm thick porous Pt as cathode and anode. The peak power density at 350 ?C was 131 mW/cm2. The high power densities achieved are not only due to the reduction of electrolyte thickness but also to the high charge-transfer reaction rates at the interfaces between the nanoporous electrodes (cathode and/or anode) and the nanocrystalline thin electrolyte. In the second method, a low temperature micro SOFC with corrugated electrolyte membrane was developed and tested. To increase the electrochemically active surface area, yttria-stabilized zirconia membranes with thickness of 70 nm were deposited onto pre-patterned silicon substrates. Fuel cell performance of the corrugated electrolyte membranes released from silicon substrate showed an increase of power density relative to membranes with planar electrolytes. Maximum power densities of the corrugated fuel cells of 677 mW/cm2 and 861 mW/cm2 were obtained at 400 and 450 ?C, respectively. Finally, a design and fabrication of micro-SOFC array with high surface area density will be presented. The structure consists of a corrugated nano thin film electrolyte and a silicon supporting layer on a two-stage wafer through hole. The goal is to maximize the surface area within a given volume to obtain high absolute power output. An array of total 500 thousands fuel cells with 65 nm thick electrolyte was tested in parallel without a single membrane failure. -------------- next part -------------- An HTML attachment was scrubbed... URL: From gsosa at stanford.edu Thu Jul 16 09:50:06 2009 From: gsosa at stanford.edu (Gary J Sosa) Date: Thu, 16 Jul 2009 09:50:06 -0700 (PDT) Subject: MF26A Developer back online In-Reply-To: <1590337965.27998891247762973533.JavaMail.root@zm08.stanford.edu> Message-ID: <1757990878.27999291247763006344.JavaMail.root@zm08.stanford.edu> Hi all... The SVG Developers have been converted back to MF26A developer for all developer processes. All needed program changes have been made and tested. Please continue to verify the programs against the laminated program sheets. Please contact us if you have any questions or concerns regarding the SVG Developers. Thanks.. Gary From edmyers at stanford.edu Fri Jul 17 13:58:02 2009 From: edmyers at stanford.edu (Ed Myers) Date: Fri, 17 Jul 2009 13:58:02 -0700 Subject: Coral Outage Message-ID: <6.2.5.6.2.20090717135600.034b7bf0@stanford.edu> All, We have just recovered from a coral outage. Actually, all the computers went down including the web site, email, ... A circuit was blown will a plumbing repair was being made in the computer room. The limited testing indicates we are back to normal. Regards, SNF Staff From ljy at stanford.edu Mon Jul 20 14:40:36 2009 From: ljy at stanford.edu (Jung-Yong Lee) Date: Mon, 20 Jul 2009 14:40:36 -0700 Subject: PhD Orals - Jung-Yong Lee, July 23, 2009, 9:30am Message-ID: <794cfe150907201440q4f776deaq62c24f92952f1aab@mail.gmail.com> *Metal Nanostructures in Optoelectronic Devices* *Jung-Yong Lee* Ph.D. Oral Examination Department of Electrical Engineering Stanford University Advisor: Peter Peumans Date: Thursday, July 23, 2009 Time: 9:30am (Refreshments at 9:15am) Location: Paul G. Allen Building Auditorium *Abstract* In the first part, we consider the trade-off between optical absorption and internal quantum efficiency in thin-film photovoltaic (PV) cells. Metal nanoparticles (MNPs) have been used to alleviate this trade-off by enhancing optical absorption in thinner films. We extended Mie?s approach to estimate the absorption and scattering efficiency of MNPs embedded in an absorbing medium. This theory predicts the spatially localized and spectrally broadband optical absorption enhancement. Experimentally, we show that incorporating MNPs in organic photovoltaic cells leads to an increase in power conversion efficiency by up to 40%. In the second part of this talk, we focus on transparent conductors, which are essential components of thin-film optoelectronic devices. Sputtered Indium-Tin-Oxide (ITO) is currently the most commonly used transparent electrode material, but it has a number of shortcomings. I will discuss the possibility of using metal gratings and metal nanowires as a replacement for ITO. It is shown that random silver nanowire meshes have electrical and optical properties that are comparable to those of ITO (15 ?/? sheet resistance and 85% solar spectral weighted transmission). We also show that silver nanowire meshes are compatible with flexible substrates and stable when encapsulated. We demonstrate organic photovoltaic cells grown on silver nanowire meshes with characteristics similar to those grown on ITO. Semi-transparent organic photovoltaic cells using laminated silver nanowire meshes are presented both as an important application in itself and as a stepping stone toward multi-terminal multi-junction (MTMJ) PV cells. As opposed to conventional multi-junction (MJ) PV cells, MTMJ PV cells are not restricted by current matching constraints. Therefore, MTMJ PV cells are more robust to fabrication imperfections and spectral changes. We discuss a MTMJ PV cell using P3HT:PCBM bottom cell and CuPc/C60 top cell. In organic light emitting devices (OLEDs), random metal nanowires meshes provide a simple and efficient way to extract more photons out of the devices while also providing a transparent contact. Finally, we analyze the performance limits of silver nanowire meshes by modeling the sheet resistance of random wire networks, and show that it is dominated by the wire-wire contact resistance (estimated to be 200 ?). We show that if the contact resistance can be reduced (<< 10 ?), or if the nanowire length can be increased (>>20?m), the sheet resistance of silver nanowire meshes can be reduced to <2 ?/? for a solar spectral weighted transmission >85%. Jung-Yong -------------- next part -------------- An HTML attachment was scrubbed... URL: From mtang at stanford.edu Mon Jul 20 15:05:49 2009 From: mtang at stanford.edu (Mary Tang) Date: Mon, 20 Jul 2009 15:05:49 -0700 Subject: Learn to save someone's life! Message-ID: <4A64EA3D.3010701@stanford.edu> Greetings labmembers -- There are two spaces left in a First Aid/CPR/AED class to be held at SNF on Wednesday, July 22, from 8 am-4 pm and enrollment will be open to Stanford students and staff. If you are interested in attending, please send me an email. Mary -- Mary X. Tang, Ph.D. Stanford Nanofabrication Facility CIS Room 136, Mail Code 4070 Stanford, CA 94305 (650)723-9980 mtang at stanford.edu http://snf.stanford.edu From jwc at snf.stanford.edu Tue Jul 21 10:43:59 2009 From: jwc at snf.stanford.edu (James Conway) Date: Tue, 21 Jul 2009 10:43:59 -0700 Subject: ANNOUNCEMENT EBEAM LAB TOWN HALL MEETING -- THIS THURSDAY JULY 23, 2009 3 - 4:30 pm CIS 201 Message-ID: <4A65FE5F.1030007@snf.stanford.edu> Nano-bowtie written using FIB on a RAITH IonLINE by Anika Kinkhabwala Ebeam Town Hall Meeting Announcement: THIS Thursday July 23, 2009 from 3:00 to 4:30 PM we will be holding an Ebeam Town Hall Meeting for all interested SNF Ebeam Labs Users in CIS 201 1. Discussion on Ebeam Lab Policies in place with proposed changes, additions, or deletions to our lab policies... 10 minutes -fast review of the reservation and equipment usage policies for the Ebeam tools. 2. SPECIAL SPEAKER: PAUL RISSMAN --- 45 + 15 minutes for Q&A. Paul Rissman will give a presentation on details of Electron Beam Exposure Proximity Correction methodologies. Paul has a wealth of experience in this area having modeled and developed methods for EPC since 1979. He will show examples of several modeling and EPC design tools results. 3. Additional Items To-Be-Added -- 20 minutes. It is hoped that all Ebeam Lab members will be able to attend and add to these discussions! Thank you for your support! James Conway Stanford Nanofabrication Facility -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: image/gif Size: 34334 bytes Desc: not available URL: From jwc at snf.stanford.edu Thu Jul 23 13:54:50 2009 From: jwc at snf.stanford.edu (James Conway) Date: Thu, 23 Jul 2009 13:54:50 -0700 Subject: REMINDER EBEAM LAB TOWN HALL MEETING -- THURSDAY JULY 23, 2009 3:00 - 4:30 pm CIS 201 Message-ID: <4A68CE1A.9020307@snf.stanford.edu> Nano-bowtie written using FIB on a RAITH IonLINE by Anika Kinkhabwala Ebeam Town Hall Meeting Announcement: TODAY Thursday July 23, 2009 from 3:00 to 4:30 PM we will be holding an Ebeam Town Hall Meeting for all interested SNF Ebeam Labs Users in CIS 201 1. Discussion on Ebeam Lab Policies in place with proposed changes, additions, or deletions to our lab policies... 10 minutes -fast review of the reservation and equipment usage policies for the Ebeam tools. 2. SPECIAL SPEAKER: PAUL RISSMAN --- 45 + 15 minutes for Q&A. Paul Rissman will give a presentation on details of Electron Beam Exposure Proximity Correction methodologies. Paul has a wealth of experience in this area having modeled and developed methods for EPC since 1979. He will show examples of several modeling and EPC design tools results. It is hoped that all Ebeam Lab members will be able to attend and add to these discussions! Thank you for your support! James Conway Stanford Nanofabrication Facility -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: image/gif Size: 34334 bytes Desc: not available URL: From sarioglu at stanford.edu Fri Jul 24 07:22:16 2009 From: sarioglu at stanford.edu (Fatih Sarioglu) Date: Fri, 24 Jul 2009 07:22:16 -0700 Subject: PhD Orals - Ali Fatih Sarioglu, July 24, 2009, 3:45 pm, Packard 101 Message-ID: <4A69C398.5070207@stanford.edu> Speaker: Ali Fatih Sarioglu, sarioglu at stanford.edu Title: Time-resolved Tapping-mode Atomic Force Microscopy Date: Friday, July 24, 2009 Time: 3:45 pm (Refreshments at 3:30 pm) Location: Packard Room 101 Abstract: There is an increasing interest in the use of atomic force microscopy (AFM) for quantitative mapping of material specific surface properties. However, methods that have been developed for local stiffness measurements generally suffer from low operational speeds and they apply large forces to the surface limiting their resolution and use on soft materials such as polymers and biological samples. On the other hand, tapping-mode AFM, which is well suited to soft materials due to its gentle interaction with the surface, cannot be used to recover information on the tip-sample interaction (and hence, on the material properties) due to limited bandwidth of the AFM probe. In this talk, a technique for rapid quantitative material characterization with nanoscale spatial resolution will be introduced. This technique is based on time-resolved measurement of tip-sample interaction forces during tapping-mode AFM imaging by a special micromachined AFM probe. In this probe, a high-bandwidth interferometric force sensor at the end of the cantilever is coupled to the tip motion and is used to resolve tip-sample interaction forces with high sensitivity and temporal resolution. Combined with a real-time signal processing software that we developed, these probes provide quantitative maps of peak interaction forces and elastic properties simultaneously with conventional AFM data. High-contrast compositional mapping, quantitative peak force imaging and quantitative material characterization by mapping surface Young's modulus acquired using this system will be demonstrated on various samples. From shott at stanford.edu Sun Jul 26 17:08:25 2009 From: shott at stanford.edu (John Shott) Date: Sun, 26 Jul 2009 17:08:25 -0700 Subject: xReporter accounting reports .... Message-ID: <4A6CEFF9.10006@stanford.edu> SNF Lab Members: A couple of folks have pointed out that the "My accounting" report is broken. It should be functional once again. However, there are some changes to our accounting strategy that should not make any difference in the amount that you are paying, but should provide you with some better information. Let me explain: For a number of years, we have used database stored procedures to calculate your lab charges. They have the downside that they are not terribly easy to find problems, not easy to modify, and not particularly easy to see exactly what algorithm is used to calculate the charges. To address these issues, Bill Murray has developed a system called XCRML (for eXtensible Cost Recovery Markup Language) that, in particular, allows the flexible specification of the algorithm that is used to determine charges. Of course, if the numbers are the same, why am I telling you this? There are a couple of things that you may notice and may be of interest to you. 1. In the past, if you exceeded 160 hours of equipment usage in the month, you would see a separate line item for both the "normal" eq_activity charges and a separate line item for the equipment usage beyond the 160 hour limit that was described as the "eq_surcharge". From this point forward, you will see only a single eq_activity line that represents both the "normal" and post-160-hour charges for equipment usage. 2. We are now able to provide better accounting details that can provide the effective cost of each and every equipment usage during the month. Furthermore, this scales the cost of each equipment usage properly to properly allocate the impact of the monthly cap to each individual equipment activity. So, under the Accounting section of the xReporter section, you used to see one report named "My Accounting". That report is still there and will provide the charges for a given month based on the old, stored procedure calculations. If you wish, you can use that report to confirm that the charges determined by that calculation are the same as you will be charged by the new XCRML-based calculations. You will also see two new reports: one named "My XCRML Accounting" and one named "My XCRML Accounting Detail". The "My XCRML Accounting" should look very similar to the old "My Accounting" report in that it will give you subtotals for equipment charges (type = 'eq_activity'), training charges, staff activity charges, inventory charges and subscription charges. The "My XCRML Accounting Detail" report will give you the full details, including every activity during the month and the amount that you will be charged for that month. We hope that this additional detail will be of use to you by allowing you to see the effective charge (including capping) of each individual activity. Please let is know if you have any questions or problems running these new reports. Thanks, John From tdo at stanford.edu Mon Jul 27 21:31:15 2009 From: tdo at stanford.edu (Thomas O'Sullivan) Date: Mon, 27 Jul 2009 21:31:15 -0700 Subject: Missing wafer box with si pieces Message-ID: <4A6E7F13.7020606@stanford.edu> Hi all, Around 5pm I turned around to the table (between the RTAs and the chemical transfer) where I left a couple of 4" wafer boxes with silicon pieces only to find them missing! If you took these by accident, please let me know. They contain diced silicon pieces on blue tape. Best, Tom From mtang at stanford.edu Tue Jul 28 15:26:22 2009 From: mtang at stanford.edu (Mary Tang) Date: Tue, 28 Jul 2009 15:26:22 -0700 Subject: Use of svgcoat and svgdev tracks Message-ID: <4A6F7B0E.5040607@stanford.edu> Dear labmembers: As you may know, particles and residue from the svgcoat tracks will contaminate clean wafers. This not only causes defects on everyone?s wafers, but also can contaminate equipment. The ASML especially, will fail when particles and residue are transferred to the wafer handling system, causing bad focus and in severe cases, equipment failure. ASML users are responsible for inspecting their own wafers before running on the machine. But all users of the svgcoat and svgdev tracks are also responsible for their use of those systems. What you should do on the svgcoat or svgdev tracks: 1. Clean up after yourself, especially if you?ve dispensed thick resist or did not use EBR or manually dispensed chemical. Cleaning up means wiping down chuck, hot plate, and belts as needed. If you are unsure how to clean, Staff would be glad to show you. 2. For wafers coated on both sides, bake the backside before coating the frontside and make sure to bypass the hot plate (use an oven bake.) 3. Inspect the track before you use it and after. If it?s in bad shape before you use it, contact the previous user to clean it up. Or, clean it up yourself. Or, put it down for Staff to cleanup. 4. Do not use both coat tracks or both develop tracks when someone is waiting. Be aware the tracks will be inspected in the morning and evening. If particles and residue are observed, everyone (yes, everyone) who has enabled the tool since the last good inspection will be subject to community service and possible disqualification. Please take a few extra minutes to inspect the tracks when you are done. Your lab mates and staff will greatly appreciate it. Your SNF staff -- Mary X. Tang, Ph.D. Stanford Nanofabrication Facility CIS Room 136, Mail Code 4070 Stanford, CA 94305 (650)723-9980 mtang at stanford.edu http://snf.stanford.edu