April 16, 2015 - Tony F. Heinz

Click to Signup Location: Prysm Inc., 45 Winthrop St., Concord, MA 01742
Dinner Reservation Deadline: April 13, 2015 @ 6pm

Optical Properties of Two-Dimensional Materials - Graphene and Beyond

Graphene, a single atomic layer of carbon atoms, has attracted great attention worldwide because of its potential for novel science and technology.  Recently, this interest has expanded to the much wider class of 2D materials that occur as layers of van-der-Waals crystals. While preserving graphene’s flexibility and tunability by external perturbations, atomically thin layers of this broader set of materials provides access to more varied electronic and optical properties, including semiconducting and insulating behavior.

In this talk, we will discuss some of the distinctive optical properties of this emerging class of atomically thin 2D materials.  Graphene has now been investigated across a spectral range from the THz to the UV.  The optical properties reveal much interesting physics and also show strong tunability in response by means of external gating. Recently, atomically thin layers of semiconductors in the family of transition metal dichalcogenides (MX2 where M = Mo, W and X = S, Se, Te) have also been prepared and investigated.  Although weak light emitters in the bulk, at monolayer thickness these materials emit light efficiently. We will describe some of the surprising properties of these systems.


Tony F. Heinz, Stanford University

Tony Heinz is a Professor of Applied Physics and Photon Science at Stanford University and the Director of the Chemical Sciences Division at the SLAC National Accelerator Laboratory. Heinz received a BS degree in Physics from Stanford University and a PhD degree, also in Physics, from the University of California at Berkeley in 1982.  Heinz was subsequently at the IBM Research Division in Yorktown Heights, NY until he joined Columbia University in 1995 as a Professor of Electrical Engineering and Physics. At Columbia, he served as the Chair of the Department of Electrical Engineering from 2003 until 2007. He has also served as a Scientific Director of the Columbia Nanoscale Science and Engineering Center (NSEC) and of the Energy Frontier Research Center (EFRC). He was the President of the Optical Society of America in 2012.  Heinz joined Stanford University in 2015.


Heinz's research has centered on the elucidation of the properties and dynamics of nanoscale materials through the application of a wide range of optical spectroscopies.  His research on surfaces, interfaces, and nanoscale materials, such as carbon nanotubes, graphene and other 2D materials, has been recognized by Optics Prize of the International Commission for Optics, a Research Award of the von Humboldt Foundation, the Julius Springer Prize for Applied Physics, and the Isakson Prize of the American Physical Society.


Dinner & Meeting reservations must be made by 6 PM, April 13, 2015.  We can no longer accept dinner reservations after this cutoff.
Meeting-Only registrations are appreciated by April 15, 2015.  Walk-ins are acceptable for the meeting-only.

Please make online reservations via the link above.

Reservations may also be left on the answering machine at (617) 584-0266. We no longer have an email address for reservations due to SPAM.

When making reservation requests, please provide the following information:

  • DINNER AND MEETING or meeting only
  • Name(s) and membership status
  • Daytime phone number where you can be reached (in case of change or cancellation)


Prysm Inc
45 Winthrop St.
Concord, MA 01742
(617) 969-3282

(Map to Prysm).

Networking—5:45 PM, Dinner—6:45, Meeting—7:30 PM.


Varies meeting-to-meeting.

Vegetarian option available on request

Dinner Prices*:

 NES/OSA Members and their guests   $25.00 each 
 Non-members   $30.00
 Students   $5.00 
 Post-Docs   $15.00 






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* CYC Technology Group has graciously offered to sponsor the dinner cost for monthly meetings for students, post-docs, and the unemployed.  To take advantage of this generous offer, please register for the monthly meetings as you normally do, without paying, and send an email to This email address is being protected from spambots. You need JavaScript enabled to view it. letting us know of your intent.  Many thanks to CYC Technology Group!

General Information on NES/OSA Meetings

Cancellations and No-shows:

If the meeting must be canceled for any reason, we will try to call you at the phone number you leave with your reservation. Official notice of cancellation will be on our answering machine.

We have to pay for the dinners reserved as of the Tuesday before the meeting, so no-shows eat into our cash reserve. If you will not be able to attend, please let us know as early as possible. Otherwise, no-shows will be billed.

Membership Rates:

Regular members $15.00
Student members free




NOTE: The extra $5.00 of the non-member dinner fee can be used toward membership dues if the nonmember joins and pays dues for the current year at the meeting.