Minot group

advice

2009-06-02T16:34:43-08:00

Senior thesis for Physics Undergrads During the first term of senior year you need to develop a thesis proposal: a statement about what experiments you will undertake. The Undergraduate Research, Innovation, Scholarship & Creativity (URISC) proposal is an ideal format for writing this proposal. By completing a URISC proposal you also support the lab by applying for research funding.

afm

2009-10-26T13:36:45-08:00

See also: AFM advanced techniques. New users on the AFM are expect to get AFM training and then pass the [AFM quiz]. Note that OSU also has a multiuser AFM facility run by Dr. Phil Watson in the Chemistry department. Scheduling time To book time on the AFM, please use the group calendar (contact Ethan for access to this google calendar). Basic rules about booking time:

afm_advanced_techniques

2009-06-29T13:24:30-08:00

Static Force Curves and Measuring the Spring Constant Static force curves allow you make graphs of deflection versus tip height for single pushes onto a sample. There is a calibration process that is necessary to make these measurements accurate.

aps_northwest

2009-03-24T15:41:15-08:00

APS North West Conference (APS) This small meeting typically happens in May. “The section's purpose is to facilitate the exchange of physics information and discussion among APS members living in the Pacific NorthWest (primarily Alberta, British Columbia, Idaho, Montana, Oregon, Washington, and Wyoming). The Section places emphasis on including physics students and young physicists in our activities.

blog

2009-07-03T12:41:24-08:00

Blogs are an easy way to stay current on science & nanotechnology news. Simply copy/paste a blog's url into any RSS viewer (like google reader). Nanotechnology * Nature Nanotechnology - * AZoNano - * Nanodot - * Nanowerk -

books

2008-12-19T16:33:15-08:00

Grant writing Reif-Lehrer, Liane, “Grant application writer's handbook” Valley library CALL NO: R853.P75 R439 1995 * Focused on NIH. Concise and well-written. Friedland, Andrew J., “Writing successful science proposal”, Valley Library CALL NO: Q180.55.P7 F75 2000 c.2

change_the_security_settings

2009-10-28T13:20:22-08:00

You should be able to do this in windows, but the UNIX commands work for me. The instructions assume that the wiki folder is a subdirectory in public_html: * Launch the SSH client and connect to the server (in this case “science.oregonstate.edu”) * Type: * cd public_html * chmod 757 new_wiki * chmod 757 new_wiki/data * chmod 757 new_wiki/conf * cd new_wiki/data * find . -type d -exec chmod 757 {} \;

clean_tips

2008-06-20T11:37:14-08:00

back to probe station A semiconducting nanotube will have a resistance between 100k-ohms and 1M-ohm. The probe contact can be as high as 1M-ohm, so be careful to make sure the resistance you are measuring is the nanotube and not probe contact resistance.

committee_meetings

2009-02-13T11:48:32-08:00

The "guide to success" website for OSU grads contains info about committee composition and procedures for formal meetings. First committee meeting First committee meeting occurs during the first half of your second year (when you have chosen an adviser). The program of study form must be completed before this meeting. You will fill in all courses you have taken and all courses you are planning to take. The list of courses must satisfy grad school requirements and department requirements. Fill…

comsol

2009-11-20T16:24:38-08:00

Fluid dynamics and mass transport Comsol can be used to solve the Navier-Stokes equation for an arbitrary flow geometry. Here is a quick tutorial how to model water flowing between two planes. * Open a new fluid mechanics modeling environment. * Draw a rectangle with the rectangle tool. * Find the drop down menus that let you edit the attributes of an element. * Set the material inside the box to be water (viscosity, density etc.) * Each side of the rectangle (1, 2, 3, 4) can be chang…

concentration_calculation

2009-05-14T15:50:17-08:00

60 mg of Iron nitrate is (0.06 g)/(404 g/mol)=0.15 mmol 0.15 mmol/45 ml = 3 mmol/l = 3 mM.

conferences

2009-10-01T17:00:58-08:00

Our research funds include money so that we can report results at conferences. Here are the steps to organize a conference trip: * Decide on a conference (this [article] has a few ideas), ask Ethan about attending and the fund index that will pay. * Fill out a [Request for Approval to Travel Form] and take it to Verna. * Make travel arrangements (flying or driving, see below). * Make your talk or poster (info about printing posters). * After the trip, bring your receipts and [reimb…

contact_aligner_walk_thru

2009-11-12T09:55:22-08:00

IMPORTANT NOTE: The recipe below is for illustrative purposes only. For current recipe see the main Device Making page. Note: Data sheets for S1813 and LOR3B are available at T:\Physics\Minot Group\Group documents\Manuals\Device Making * Start-up * Turn on power to aligner * Turn on microscope light * Turn on power to mercury lamp * Turn on nitrogen flow, and check pressure. Press start on the front of the lamp power supply * Turn on power on aligner control panel * Wait 30 minut…

contacts

2009-04-30T15:25:10-08:00

* Sharp: pschuele@sharplabs.com (Paul Schuele) * Intel: marko.radosavljevic@intel.com, * Invitrogen: schuyler.corry@invitrogen.com, magnus.persmark@invitrogen.com * Voxtel: tomn@voxtel-inc.com, davids@voxtel-inc.com (David M. Schut) * Virogenomics: jeff.king@virogenomics.com

contribute

2008-05-09T10:20:49-08:00

You need a user account to do edit and create pages. Contact Ethan Minot to get a user account. Group members are expected to contribute to the wiki. It is a fast and effective way to share and record what you learn about everyday lab skills. If you haven't contributed to a wiki before, here is some advice from wikipedia which applies equally well to our wiki:

coot

2009-01-08T10:25:29-08:00

Inserting missing residues into PDB files * Load PDB file * Load MTZ file * An MTZ file is the electron density map for the given molecule. This can sometimes be obtained from the electron density server. If the map can't be obtained simply load any MTZ file for any molecule.

cvd_furnace

2009-10-08T10:40:50-08:00

The furnace and flow controllers are the main expense when setting up a nanotube growth system. All groups that we know use the same $2000 furnace: Thermo Scientific Lindberg/Blue M Mini-Mite Tube Furnaces (one segment, 1” diameter) There are lots of options for flow controllers. We initially used cheap flow controllers (floating ball design) from Omega and found gas flow rate calibration very difficult. We now use a set of 4 [digitial flow controllers] from Omega that have built in calibration…

daq_systems_from_national_instruments

2009-02-11T12:25:42-08:00

Our local field engineer is Matt Spiegelberg (Matt.Spiegelberg@ni.com). He is based in Portland, but visits OSU about once per week. The E-series to M-series transition happened in 2000. The M-series is superior and the end-of-life is approaching for the E-series.

data_management

2008-02-29T15:04:36-08:00

Our research generates lots of AFM images and current/voltage data. We also try a lot of different recipes when creating new samples. The data contains gems of insight that we don't alway notice right away. It might be the next day, the next week, or the next year that a new understanding dawns. Imagine one year from now looking back through your lab notebook and computer files. Would you be able to uncover the gems?

designcad_hints

2009-11-23T13:06:31-08:00

DesignCAD product website Overview Export your DesignCAD drawing in the .dxf format. All shapes in this file must be closed polygons. For example, a rectangle drawn with the rectangle tool is a closed polygon, however, 4 individual lines that touch at 4 corners do not form a closed polygon. If necessary, you can bind together a selection of lines with the key stroke shortcut “b”, thereby creating a closed polygon.

device_making

2009-11-23T13:23:55-08:00

To learn more about microfabrication processes look at . The most important source of information is always the photoresist manufacture's data sheet (see the T: drive). There are also some good textbooks in the OSU library that cover all aspects of microfabrication:

disclosure

2008-06-06T15:18:19-08:00

This is a summary of the procedure that is followed to get inventions (intellectual property = IP) turned into IP licenses which in turn make money (split equally between the university, the Physics Dept. and the inventors). The information was taken from

drop_cast

2009-06-12T13:53:06-08:00

Drop casting Make a bubble of liquid on top of a surface then either * Spin the chip on a spinner, or * Wait 30 seconds and rinse with clean solvent, or * Wait until on all solvent evaporates (this will leave drying spots, non-uniform coverage)

ebeam_recipe

2009-06-24T14:06:41-08:00

Contact person at CAMCOR is Kurt Langworthy (office 541 346 3660, ebeam room 541 346 4778) Basic parameters are: * PMMA (950k, 5% in Anisole) is spun at 3000 rpm for 60 seconds to get 175 nm. (At 400 rpm the thickness is 130 nm, spin curve is available from the Microchem website). Baked 10 minutes on a 165 deg hotplate. * 30kV accelerating voltage to minimize secondary electrons. * 10 micron aperture (beam current ~ 25 pA). * WD of 5 mm (Thumb on camera image is about 8 mm). * Focus, ap…

emacs

2009-09-16T12:14:27-08:00

Vertical copy-paste or delete * Place cursor at the start of selection * control+space * Marks the beginning of selection region * Place cursor at the end of the selection * control+x, r, k * This 'kills' the selection and it is deleted. To preform a copy-paste continue with next steps.

equipment

2009-01-02T15:37:40-08:00

* MilliQ * O2 plasma * Critical point drier * Supercontinuium light source * Scan mirrors

eric_johnson_s_recipe

2008-06-20T14:19:48-08:00

Eric is an EE grad student who TAs the EE class on chip making & has made hundreds of chips in the Owen clean room. His advice should be heeded. * Spin 1818 photoresist at 3000 rpm for 30 seconds (2 um layer) * Bake at 85C for 2 minutes * Expose for 6-8 seconds

eric_sundholm_s_recipe

2009-08-05T15:28:52-08:00

WARNING: Manufacturer's recommended softbake is 115 C for 60 s on a hotplate. The manufacturer does not recommend baking inbetween exposuring/developing. Such bakes are only used for the more modern 'chemically amplified photoresists'. See Ethan for the 1800 series datasheet.

evaporation_boats

2009-06-22T14:29:57-08:00

Evaporation boats are made of tungsten because tungsten has an extremely high melting point. There are many boat geometries from RD Mathias. We have used two types: trays with dimples and wire coils. The thickness of the boat (or wire) determines the temperature at a given voltage. For example, if you supply a fixed voltage (say 100 V) across a thin boat and a thick boat, the thinner boat will be hotter.

fine_tuning

2009-09-18T17:28:40-08:00

Learning about photoresist chemistry The best information is on the manufacturer's datasheet (see T:\Physics\Minot Group\Group documents\Manuals\Device Making) and in textbooks. Note that Shipley 1813 is a positive DQN resist with no chemical amplification.

fundamentals

2009-09-14T12:30:13-08:00

Ethan 01-10-2008 * Outline a clear plan with the team before starting work on something. Experiments should efficiently/elegantly test alternative hypotheses - [classic article from Science magazine about efficient progress in science] * Spend time in lab, and spend it efficiently: Stick to the plan, but stop and fix things that need fixing (don’t keeping working on half-working equipment). * Ask questions when you're not sure. * Keep clear notes of everything that you try (see data manage…

funding

2009-01-08T13:53:48-08:00

Undergrad students URISC: OSU Undergraduate Research, Innovation, Scholarship and Creativity, pays research stipend NSF REU program: National Science Foundation Research Experience for Undergrads, all expenses paid summer of research at the research lab of your choice

gelpaks

2008-02-29T16:00:18-08:00

If fresh silicon oxide (very hydrophillic) is left in a gelpak for more than a couple days, the surface becomes hydrophobic. This is indicative a layer of hydrocarbons coating the oxide surface. Hyrophillic and hydrophobic are easily measured by wetting the chip with water. The water either wets the entire chip or beads up.

grad_school

2008-10-20T09:59:45-08:00

Graduate students in Physics are supported as either Research Assistants (RAs) or Teaching Assistants (TA). Throughout a PhD you will have financial support from these sources, covering all living expenses plus some extra. RA positions are not usually confirmed until graduate students spend some time in a research group. At OSU Dept. of Physics it is typical to spend one year as a TA while you explore research options, then secure an RA position in the second year. RA support can depend on the …

grants

2009-10-16T09:03:45-08:00

Open announcements DOE BES Core Programs Open Call - Andy Schwartz is program manager for “Condensed Matter Experimental”, focus is on low-dimensional materials and intrinsic electronic properties. A related program is “Physical behavior of materials” which includes PV effects and thermo-electric effects. It takes 4-6 months to get a proposal reviews and then 2-3 months before the funding starts. For fastest turn around time Andy recommends submitting between summer and November. Money has to g…

group_meetings

2009-11-06T12:20:34-08:00

TimeMeetingPlace3pm ThursdayGroup meeting304 Weniger Matt is currently in charge of scheduling group meeting Group talks We take turns giving the weekly talk at group meeting. The talk focuses on your own research results, or any other subject that you think the group will find interesting. Aim for a 15 minute presentation. It will naturally get longer when interrupted with questions.

group_photos

2009-06-26T10:53:20-08:00

Our research group in the academic year 07/08: Ethan, Tristan, Josh, Matt, Caleb, Landon, Daniel, Jörg.

idea_for_quartz

2009-08-05T15:40:22-08:00

* During the exposure, the quartz should have a dark substrate underneath so that transmitted light does not reflect back and expose the rest of the sample. The rough side of an old silicon wafer seems to work well. * Manufacturer's recommended softbake temperature is 115 C for 60 s on a hotplate. Quartz has a lower thermal conductivity so it is possible it needs to bake longer at 115 C or temperature needs to be slightly higher (say 120 C). Note that the purpose of the softbake is the obtain …

installing_labview

2009-01-26T20:14:17-08:00

First goal is to get labview to control analog outputs on the DAQ. There are testing procedures for this built into the software. Second goal is to get MeaSureit to work with the DAQ. MeaSureit requires that you set up “global virtual channels”. Using the measurement explorer (mx) you must set up the ao0 and ao1 channels and label them as AO0 and AO1. Similarly, ai0, ai1 and ai2 must be set up and labeled. The voltage limits on these channels should all be +/- 10V.

journals

2009-11-15T23:44:52-08:00

A convenient way to stay up-to-date with carbon nanotube papers published this week is . Have the table of contents e-mailed to you every week (see “Email alerts below). Both the nanoscience/CNTs and biophysics sections are relevant to our group.

keys_computers_printers_telephone_mail

2009-09-17T16:00:52-08:00

see also travel & conferences Keys To get a key to 306, 317 and outside door of Weniger Hall visit the "forms" page on the department website and fill in a key request. Renee will give you a piece of paper with the key numbers. Then you will visit the campus “key shack” at the intersection of 15th and Washington Ave and pay a $5 deposit for each key.

lab_space

2009-01-07T16:58:13-08:00

Bill Warren is out of town until early Feb. He will try to answer questions by email. First draft of room layout. “Generally speaking, the stuff on the west side of the room can go -- the old ESR spectrometer and the desk in the SW corner of the room.” -Bill Warren. The old ESR spectrometer will be removed before installing new optical table. “On the basis of a discussion with Henri Jansen, it my understanding that the large NMR magnet and the homemade spectrometer in the SE corner of the room…

landon2

2008-07-16T22:10:15-08:00

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landon_s_trip

2009-03-05T23:01:09-08:00

This is a list of people who you should look up in the author index before departing for March Meeting. Also check for Dorothy Kern who wrote the nature article that you are referencing. Often these profs will not give the talk themselves (a grad student will give the talk). If the prof is giving a talk - it is definitely worth attending even if not directly related to your research. At least half of these groups will be giving interesting talks. When you find an interesting talk, it is usually …

learn_the_basics

2009-07-30T14:02:43-08:00

Layout Editor is open source and reasonably powerful. However, it is less intuitive to learn than DesignCAD. The Layout Editor software and instructions are available at . A nice feature of layout editor is “cells”. It's important to work with cells so that repeated structure are easy to edit. It takes about 1 hour to learn the basics.

learning_labview

2009-03-05T15:52:39-08:00

Recommended by our local NI field engineer Matt Spiegelberg. * FET testing with the PXI SMU - we already have a pre-written LabVIEW program which you can download. I believe it has everything you had shown me with the other program. You noise characterization would be a simple add-on to the code that I could easily show you how to do. Here's the link to the code:

machine_shop_class

2008-06-06T10:12:28-08:00

The 2008 summer class is confirmed for July 7, 8, 9 & 10, from 1 to 5 PM. It is taught by John Niedermann (john.niedermann@linnbenton.edu or 541.917.4600) at the Albany LBCC campus. The class meets in room IB118; it is adjacent to the north parking lot at the Albany LBCC campus. Please see the LBCC website for a campus map.

mask_images

2009-08-11T10:45:43-08:00

matlab

2009-06-11T15:58:44-08:00

The probe station computer and furnace growth computer both have Matlab installed. You need a user account with a special matlab license to use the program. Log on with the username “minotlab” to the domain “this computer”. Ask Ethan for the password.

mceuen_recipes

2009-09-16T16:22:29-08:00

Aligned nanotube growth Melina, June 2009 Fabrication: First: photolithography + etch step to define the alignment marks on a whole wafer. Second: Another photolith step on the whole wafer to pattern the catalyst stripes. I dice the wafer on our wafer saw immediately after patterning the catalyst pads; I then do a 1-minute oxygen plasma clean on the resultant pieces and evaporate 1-2A of iron using an e-beam evaporator. The tooling factor for the quart crystal monitor is set to 500% to get a…

microspotter

2009-11-18T15:48:42-08:00

The SpotBot from ArrayIt costs 18,000. Important add-on is the wash station (dips the needle in a sonicator bath) for $2,600. When working with proteins cooling may be important ($8,000 add on). The SpotBot has excellent precision (better than 10 microns) once it finds the first spot place. The trick is this initial alignment. The smallest spotter needle gives ~ 50 micron diameter. Hydrophobic surfaces stop the spots from getting bigger.

mylar_masks

2009-02-13T11:33:49-08:00

CAD art will print your mask design directly onto a transparency (mylar). You can draw features down to 10 micron resolution. These mylar masks are flexible, so you need a glass backing for contact printing. Rick has attached the Mylar mask to a 4×4” glass plate. He uses selotape to secure the mask to the glass plate, with good results. That way he can easily switch Mylar masks and use the same 4×4” glass plate. He purchased the glass from the hobby store near Fred Myers. “You need to make s…

nanotube_growth

2009-10-08T10:31:06-08:00

Physical deposition of catalyst Electron beam evaporation of pure iron is an excellent way to deposit catalyst. If a thin layer is used (0.1 -0.4 nm) then you can grow exclusively single wall CNTs. We use the recipe published by the Rogers group (Nature Nanotech 2007). It is useful to look at the McEuen group's version of this recipe.

new_laptop_for_ethan

2009-11-16T11:06:09-08:00

Migrating the Thunderbird mail

noise

2009-11-12T14:41:36-08:00

Working with a current preamp When we measure small currents (nanoAmps or even picoAmps) outside noise sources can interfer with the meausrement. Shielding by Faraday cage Because our lab is not underground and we have fluorescent lighting we have to shield experiments from EM radiation. We currently have the probe station inside a cooper mesh Faraday cage (purchased from TMC). To see if this Faraday cage is sufficient, try the following experiment inside the Faraday cage:

old_deadlines

2009-03-05T23:10:54-08:00

DateAwarddescriptionMarch 3, 2008Oregon BESTGreen technology. See the call for white papersMarch 21 2008ONAMI nanometrology5 page white paper, include relationships with other partners such as WIN, OHSU, and PNNLJune 5 2008NIH R01 (new)see RFP NIH Nanosci in Bio and MedJune 13, 2008ACS Petroleum Fund, New InvestigatorSupport fundamental research in alternative energy fields and develop the next generation of engineers and scientists through support of advanced scientific education. $100,000 over…

optics

2009-06-26T16:05:13-08:00

Laser diodes To get stable laser power out of a laser diode and good power supplier is needed. For Michael Paul's project we borrowed a Tetronix CPS250 triple output power supply from Bill Hetherington (25V 600mA). The cheap 532 nm laser diode that Michael used does not have a good beam profile. Two options, buy and expensive laser or couple the laser to a single mode fiber.

organizing_meetings

2009-06-09T13:04:05-08:00

By email Some common sense rules of thumb about organizing a meeting or event by email: * Choose a time/date far enough in advance that you can receive responses from people (assume that people check their email once a day, 5 days a week) * Put as much info into the email as possible (rather than sending multiple emails and/or last minute details). * If you don't get an response, follow up with a second email.

other_etching_options

2009-06-12T11:55:40-08:00

There is a plasma cleaner in the group of Vince Remcho in the OSU Chemistry department. It is designed to create free radicals, but doesn't accelerate them toward the surface. We tried it, it didn't remove any CNTs. The McEuen lab uses a plasma cleaner from Harrick Plamsa. “It's powerful enough the kill nanotubes devices in ONE second, i.e. making NTs no longer conductive. Their 'dead' body may still be on the surface with such …

other_groups

2009-10-05T12:01:31-08:00

* Bockrath, Mark, Caltech * Clelend, UC Santa Barbara * Collins, Phillip, UC Irvine * Dai, Honjie, Stanford (invented CVD growth) * Dekker, Cees, TU Delft * Fuhrer, Michael U. Maryland * Hertel, Vanderbilt University * Geim, Andrei, U. Manchester * Hone, Jim, Columbia * Javey, UC Berkeley * Kong, Jing, MIT (invented CVD growth) * Kotov, Nicholas, U. Mich. (CNTs for bio-interface) * Lemay, Serge, TU Delft * Lieber, Charles, Harvard * McEuen, Paul, Cornell * National Institute for …

other_recipes

2009-06-12T14:23:39-08:00

McEuen Recipes Other recipes Long, parallel growth with methane, Prof. Rogers lab (in use Mar 2007) * Anneal ST-cut quartz substrate in air for 8 hours at 900C. * Electron beam evaporation of Fe as a catalyst. * Anneal Fe in air at 550C. (10 min?) * Purge with H2 for 5 min at 900C. (0.3 SLM?) * Growth gas for 1 hour: * 0.3 SLM H2 * 1.9 SLM CH4

outreach

2009-11-23T11:05:58-08:00

* Size scales in nature * Carbon nanotubes * Atomic force microscope image of a butterfly wing

oxygen_plasma

2008-09-25T17:09:16-08:00

O2 Plasma in Owen Hall Clean Room Matt is qualified to use this O2 plasma machine. It etch S1813 Photoresist at approximately 100 nm/s. A typical recipe for ashing (cleaning off photoresist residue after development) is 30 seconds. Commercially available O2 plasma system Xinjian requested a quote from Harrick Plasma a few months back, the same company used in McEuen lab. This is the one in Paul's lab.

plastic_storage_container

2009-07-23T14:37:19-08:00

The plastic is high density polyethylene (HDPE): chemical resistance chart. It is rated for concentrations of 50% acid or less, however, we prefer to neutralize acid and pour it down the drain.

probe_station

2009-11-13T08:17:10-08:00

Matt is currently “master of the probe station”, please see him before using it for the first time. Labview We use labview programs to control voltage sources and acquire data. For documentation on the MeaSureit program see Vera's program development site. It is straightforward to use programs that are already written. If you need to write your own labview program, it will take some time investment to learn this graphical programming language. The time is well spent because labview the industr…

proteins

2009-09-16T12:05:22-08:00

Introduction to proteins Proteins are linear chains of amino acids, typically several hundred units long. There are 20 standard amino acids in biology, each with a unique residue. The behavior of a protein is defined by the sequence of residues. Some are hydrophobic, some are hydrophillic, some have positive charge at pH 7, others have negative charge. There are free online databases to look up the sequence of any protein. For many proteins the folded structure(s) is also known from x-ray crys…

purchasing_supplies

2009-11-19T13:31:22-08:00

Companies we order from * Amazon.com - Ampad 22157 Computation Notebook (lab notebooks) * Aventools - Tweezers (Anti-acid, Anti-magnetic: $23) * Atomate – CVD furnace equipment * Benchmark Technologies - High resolution chrome masks for photolith (~$800 per mask) * Bioanalystical systems - Reference electrodes for electrochemistry. * Budget Sensors - Good choice of AFM tips for tapping mode imaging or EFM. * Bulbs Direct - replacement bulb for AFM light source * CAD/Art Services - Lase…

pymol

2009-01-08T10:11:23-08:00

Removing parts of PDB files * Load a PDB file * Select atoms you want to retain * Select Display -> Sequence then select residues at the top of the screen to quickly select large sections of the molecule * In the (Sele) object click on the 'A' then choose create object * Select File -> Save Molecule to save this new object as a PDB file

quartz_tubing

2007-12-10T21:13:35-08:00

Nanotube growth requires a 1 inch quartz tube. The tube sometimes becomes contaminated. The evidence for contamination is typically unreliable nanotube growth, which become reliable again as soon as the tube is changed. Contamination is not visable, unless you gas flows are very slow and black carbon soot builds up on the wall.

safety

2009-07-23T14:41:46-08:00

New lab users are required to take this saftey [quiz]. Many of the answers are found on this page. Overview * There is one fume hood for organic solvents (acetone, ethanol, IPA) and one fume hood for acids. Never bring the organic solvents into the acid hood. Never bring acids into the organic solvent hood. This absolute/unbreakable rule protects us from the risk of accidentally mixing an oxidizing agent (e.g. H2SO4) with a hydrocarbon fuel (e.g. acetone). * Take labeling very seriously. Th…

scheduling

2009-11-08T21:20:50-08:00

Class and teaching commitments means that group members are busy at different times. This list will help you figure out when someone is available. Fall 2009 (alphabetical order by first name) --- CalebMon10-11 ElectromagnetismTue Wed10-11 ElectromagnetismThu Fri10-11 Electromagnetism Wah Chang the rest of the time, but they're flexible if I need to keep a day off.

scheduling_group_meeting

2008-08-04T12:41:20-08:00

These are the tasks of the meeting organizer: * Decide the speaker cycle and post it on the wiki (make sure eveyone is doing their turn). * Confirm speaker availability one week before the talk. * Send a group email on the day before group meeting.

second_hand_equipment_websites

2009-05-25T11:21:32-08:00

* caeonline.com * capovani.com * bidservice.com “I have bought from all three and had success.” -Brady

seminars

2009-10-27T15:55:11-08:00

Time: 12 - 1pm on first Wednesday of the month Place: 304 Weniger Hall An opportunity to hear a 30 minute report from one of four biosensing projects that are funded by the ONAMI/ARL collaboration: Learn new techniques, develop collaborations, meet people.

setting_up

2009-10-28T13:16:18-08:00

At the bottom left corner and bottom right corner of this page are links to Monobook and Dokuwiki. Monobook is the code that makes everything look pretty, Dokuwiki is the underlying code that drives the wiki. Using the respective links, you will find all the downloads you need together with installation instructions. The basic idea:

silicon_silicon_oxide_wafers

2008-05-28T15:45:23-08:00

silicon_wafers

2008-05-28T16:00:02-08:00

We current use p+ doped silicon with 200 nm thermally grown oxide. The crystallographic axis of the surface normal is ... There are 3 wafer grades: test (lowest grade), prime and epi (highest grade). Epi is short for epitaxial, which means that after the ignot has been sawn and polished into wafers an additional layer of silicon grown, one atomic layer at time, to ensure that the surface is perfectly flat.

software

2009-11-20T16:17:21-08:00

OSU licensed OSU has site licenses for some useful applications * Matlab (instructions for using our lab copy of Matlab) * Mathematica * Labview * Autocad * Endnote (note that Zotero is free and has some similar features, ask Landon) * Microsoft Office (includes a home use agreement that allows faculty and grads to get a $10 package for a home computer)

start

2009-11-18T15:37:39-08:00

Welcome to the wiki for the Minot Research Group in the Department of Physics at Oregon State University. Group members contribute and maintain up-to-date manuals, recipes and information on many common lab questions. (Setting up a wiki like this one is relatively easy.)

thermal_evaporator

2009-06-25T13:56:23-08:00

Thermal Evaporator: Standard Operating Procedure Starting the Diffusion Pump • Make sure the water to the diffusion pump is on -If you need to open the water valve, open the return before the entry valve to prevent high pressure in the line.

tips

2009-07-09T16:32:08-08:00

It should be feasible to image single fluorophores immobilized on a surface with a widefield microscope. You'll probably need decently large integration times, and won't be able to see them by eye (longer than the eye's 0.3 second integration). Making “test samples” with fluorophores deposited from dilute solutions is trickier than it sounds, due to things like molecules aggregating as solvent dries, staying in the liquid if soluble, etc., so it will take some trial and error. You will have to…

undergrad_advising

2009-10-22T09:23:02-08:00

Getting started in the lab The admin page will help you get keys and a computer account. As part of a research team, there are a some fundamentals about how you conduct research. Make use of online access to scientific journals for your research.

visitors

2009-11-11T21:23:25-08:00

Travel reimbursement for visitors Air travel: If your flights are paid for by OSU Physics, you have 2 choices * Get your ticket through a university travel agent, Teel Travel. The ticket is paid for directly by the department. * Buy your own ticket. You must provide evidence that the fare is comparable to what Teel travel offered you. If your trip is cancelled you will not get reimbursement.

vmd

2009-07-21T15:47:49-08:00

VMD is a powerful tool for visualizing and analyzing complex molecules like proteins. Below are walkthroughs of some features. See also this convenient manual. VMD basics * Download PDB file for the molecule you want to visualize * Downloaded PDB files here: protein databank

water_based_catalyst

2009-06-12T14:50:38-08:00

Think about the surface preparation of the chip. Organic residues can be a pain. Oxygen plasma is the industry standard for removing all residues. We had trouble getting alumina to stick to brand new silicon oxide wafers. Fresh silicon oxide is so hydrophillic that the alumina has no reason to deposit (it just stays dissolved in the water). Ironically, the sticking procses is aided by photoresist residue, or the residue deposited by a gelpak.

winter_2010_sso_series

2009-11-23T14:22:30-08:00

4-5pm on Wednesday afternoons in Weniger 304. Organizers Ethan Minot and Bill Hetherington DateSpeakerSubjectHost1/6Zlatko Dimcovic, OSUQuantum Random WalksHJ1/13 1/20 1/27 2/3 2/10Christoph Thomas, OSUHeat Transport Between the Earth and AtmosphereEM2/17 2/24Bill Cowell, OSUElectron Transport in Amorphous MetalsEM3/3 3/10Grad studentsMarch meeting practice talks Speaker info

writing_papers

2008-05-01T16:49:48-08:00

Intellectual property licensing (patents) Before submitting a paper... disclosure Template for a Successful Experimental Paper Paul McEuen 1/19/05 Title: State Main Result Clearly (note: there is only one main result in any paper) Abstract: Summarizes results leading to conclusion indicated by title

zen_of_device_making

2007-06-06T11:33:50-08:00

Ethan - Nov 2000 When you watch someone make a device you quickly find out that there are many steps involved and many ways to do each step. If you ask “what’s the difference?” there is often no definite answer. If the difference between two methods is unknown my instinct is to try them both. I often do this when I’m cooking or fixing my bicycle. Usually both ways work, and each method has its own advantages. Trying two methods helps me learn about the system and helps me find the most efficien…