Overview of the 2DCC-MIP for Potential Users Webinar 6/28/16

Transcription

1 Overview of the 2DCC-MIP for Potential Users Webinar 6/28/16 NSF cooperative agreement DMR

2 What s a MIP? Materials Innovation Platform Created in response to NAS, NSF MPSAC and MGI Reports MIPS are national facilities similar to National High Magnetic Field Lab (NHMFL), Cornell High Energy Synchroton Source (CHESS), etc. NAS Report NSF MPSAC MGIt Despite the promises offered, the discovery and growth of crystalline materials in the United States is substantially weaker than it was 20 years ago.need for centers of excellence in crystal growth. NSF should create a network of Materials Innovation Platforms - geographic and materials diversity; tightly closed-loop research among synthesis, characterization, theory, modeling; targeted materials outcomes; vibrant external user program. discover, manufacture, and deploy advanced materials in half the time and at a fraction of the cost. NSF responded with the DMREF program which supports tightly closed-loop research among synthesis, characterization, and theory/modeling.

3 Features of a MIP Focused research on synthesis of inorganic materials Targets an area of national importance. Materials genome approach Team of researchers in the areas of synthesis, characterization, theory/modeling in a closed-loop and iterative collaboration. User facility Provides open access to tools, expertise, data, and new materials (goal >50% time allocation to external users and >10% to non-r1 institutions). Education and outreach Advances the mission of the platform.

4 2D Materials for Next Generation Electronics 2D monolayers, surfaces and interfaces are emerging as a compelling class of systems with transformative new science that can be harnessed for novel device technologies. TIs & TMDs: steep slope transistors (< 60 mv/decade) Topological spintronics: efficient spin transfer torque for low power MRAM (fj/switch) Hybrid 2D devices cf. Fiori et al., Nature Nano. (2014) Nature (2014) (Ralph & Samarth) Nature Comm. (2015) (Robinson)

5 The Layered Chalcogenide Families 2D chalcogenides offer a wide range of electronic and optical properties for devices.

6 Overview of 2DCC Platform Develop custom deposition tools with in situ and real time characterization of monolayer and few layer films. Unique capabilities in simulation of reaction kinetics through first principles + reactive potential approach

7 User Facilities - Experimental Multi-Module UHV Growth and Characterization System Hybrid MBE system for TMDs Chalcogenide MOCVD Chalcogenide MOCVD System with In-Situ Optical Characterization Bridgman Furnace Chemical Vapor Transport Systems Multi-Module UHV system with MBE, cryogenic ARPES and Nanoprobe 4 point STM MOCVD with in situ ellipsometry and mass spectrometry (also planning Raman and photoluminescence)

8 User Facilities Theory/Computation Computational thermodynamics is an important and well-established first step, but a deep understanding of reaction kinetics is essential to success in 2D synthesis. direct reaction simulation Unique capabilities in reaction kinetics through ReaxFF, coupled to well-established expertise in first-principles methods, while accelerated MD and phase-field methods handle long length- and time-scales. In situ data interpreted through calculations of electronic/vibrational response, plus model Hamiltonian treatments of novel electronic phenomena, constrained by first-principles results. 2 ev accurate reaction barriers 0 ev 2 ev Reaction coordinate Raman response accelerated MD ARPES spectra

9 User Facilities Organization and Location Materials Research Institute Nanofabrication Facility Materials Characterization Lab Millennium Science Complex First Floor Materials Computation Center Bulk Growth Lab Bridgman System CVT Furnaces Materials Innovation Platform Nanofab 2DCC-MIP MBE System 2 located in basement of Davey Lab MBE Lab MBE System 1 CVD Lab MOCVD System 1 MOCVD System 2

10 2DCC-MIP Leadership and Administration Executive Leadership Team Joan Redwing MatSE/EE Director Synthesis Lead Nitin Samarth Vin Crespi Phys Phys/MatSE Assoc. Director Theory Lead Characterization Lead Joshua Robinson MatSE Director of User Programs Eric Hudson Phys Education, Outreach and Diversity Administration Kevin Dressler Operations & Facilities Director Rosemary Bittel Administrative Support Coordinator

11 Organization Chart Chris Palmstrom UCSB Greg Boebinger NHMFL Stefano Curtarolo Duke Anupama Kaul UT-El Paso Keith Evans Kyma

12 The 2DCC-MIP User Program

13 Benefits of using the 2DCC Join community of researchers focused on 2D materials and devices. Join user committee, participate in annual user meeting and take advantage of webinars and tutorials on a wide range of 2D topics. Gain access to facilities, equipment and 2D expertise: 2D layer and heterostructure growth by MBE and MOCVD In-situ characterization via ARPES, STM, optical spectroscopy, etc. Bulk crystal growth of chalcogenides, exfoliation and layer transfer Processing knowledge and sample handling advice Wide range of theory and simulation tools and expertise State-of-the-art materials characterization and nanofabrication user facilities It s free! (for non-proprietary U.S. academic and government lab research) NSF covers all expenses for equipment use, materials and supplies, staff time Industrial and international users pay fee based on cost-recovery Limited funds for travel and living expenses available for researchers/students from minority-serving and primarily undergraduate institutions

14 User Access Modes Remote Visiting Independent Samples/characterization/data/ modeling provided by 2DCC to remote users Users work jointly with 2DCC experts on-site at Penn State (residence: days to weeks) Users fully trained by staff to operate equipment (residence: weeks to months)

15 How do I become a 2DCC user? Proposals are accepted through an online proposal submission portal Get started today at the Become a User tab on the 2DCC website. The 2DCC accepts two types of proposals which align with the 2DCC scope and capabilities (which evolve over time): Research Projects Proposals can describe synthetic, characterization and/or theory efforts that are performed by 2DCC staff and/or users who come to the facility. Typical project duration is 1 to 2 years. Proposals consist of 3 page (max) project description plus NSF-style bio. Proposals are reviewed by external experts. Request for Standard Samples Request for samples that are routinely fabricated by the 2DCC. Current List provided on the 2DCC website. Proposals consist of 1 page (max) description plus NSF-style bio. Requests are reviewed internally.

16 User Proposal Process Research Proposal (3 pgs. + bio) 2DCC Website Review by External Experts Intellectual merit Broader impact Same process for internal & external users Sample Requests (1 pg. + bio) 2DCC Website Review by User Support Group Decision by Leadership Team Prioritize for funding/delivery based on review and project portfolio. Funded Project Samples Delivered User Support Groups Resource Allocation Coordinate resources for project Identify internal advocate/collaborator Carry out project

17 User Support User Support Groups Synthesis, theory & characterization Comprised of 2DCC faculty and experienced external users Assist in project coordination and resource allocation Provide expertise Synthesis User Internal Advocate Internal Advocate 2DCC faculty/staff member assigned to champion project Characterization Theory Simulation 2DCC Technical Support Staff Ph.D. Level Research Associates Technician Postdoctoral Scholars Graduate Students

18 Call for Proposals, Theory: Fundamental Enabling Tools As the experimental capabilities of the 2DCC ramp up, there is opportunity to develop theory tools that support these up-coming experimental investigations. Material-specific empirical force fields Accelerated first-principles methods Generation of key phase stability information Adaptations of continuum models to synthesis conditions Analysis of potential innovative synthetic protocols Questions? Contact: Personnel support over 6-12 month timescale of a project (PSU only) Access to computational resources (once on-line, in Fall) Vin Crespi Theory Lead vhc2@psu.edu Proposals are short (3 pages) and reviewed on an ongoing basis, with a submission deadline of August 31. Close relation to experimental synthetic efforts is required!

19 Available Standard Samples Transition metal dichalcogenides (partial monolayer to ~20 nm thick films) MoS 2, WSe 2 and WS 2 grown by PVT or MOCVD c-plane sapphire or oxidized silicon substrates Sample size: 1x1 cm Topological insulators (3 nm to ~100 nm thick films) Bi 2 Se 3 and (Bi,Sb) 2 Te 3 grown by MBE (111)A InP or SrTiO 3 substrates n-type and p-type doping Sample size: 1x1 cm Graphene Epitaxial graphene (1-3 layers) on (0001) SiC substrate Sample size: 1x1 cm up to 3 diameter wafer CVD graphene (monolayer) on copper substrate Sample size: 1x1 cm or 2x2 cm Questions? Contact: Joan Redwing Synthesis Lead jmr31@psu.edu Characterization data (AFM, Raman, PL, etc.) included with samples.

20 Webinar Series + Webinars are free with online registration and will be recorded for dissemination Technical Science Talks What s new with us (inside speakers) What s new around the world (outside speakers) Broader topics such as Science related to diversity Series will run last Tuesday of each month, 12-1 pm Eastern Next talk will focus on Theory/Computation, July 26 th

21 Visit 2DCC s website! mip.psu.edu