NSLS-II   |   CFN   |   Brookhaven National Laboratory

Workshop 9: Nano-mechanics: From Material Fabrication to In-Operando Characterization

Date: Wednesday, May 17, 2017

Organizer(s): Oleg Gang, ogang@bnl.gov (CFN, BNL and Columbia U.), Jeffrey Kysar, jk2079@columbia.edu (Columbia U.), Masa Fukuto, fukuto@bnl.gov (NSLS-II, BNL).

Location: Center for Functional Nanomaterials (CFN), Bldg. 735, Large Conference Room

Description:

The mechanical properties of nanostructured materials can significantly deviate from their conventional bulk counterparts due to the contribution of surface effects, grains and the effect of nanoscale architecture.  Potentially, such materials can exhibit the highly targeted performances: being strong yet light, be hard but not brittle, and respond to stress and temperature in the desired way.  Moreover, they can give access to unique properties of mechanical metamaterials.

Creating these 3D materials in a designed manner is challenging problem.  Conventional fabrication methods are not well positioned for fabricating of 3D structures with the desired mechanical response.  On other side, chemical synthesis and self-assembly methods offer a limited control over the architecture of materials.  This in contrast to biological systems, which often demonstrate a remarkable level of control.  Thus, the new approaches are needed for fabrication of material with tailored mechanical properties.

Experimental characterization of nanoscale and nanostructured materials is quite challenging due to the need to measure nm-scale displacements and nN-scale forces.  Nanoindentation and MEMS actuators provide the most versatile experimental platform for this purpose.  Performing the experiments in-operando a scanning electron microscope provides the opportunity to observe failure mechanisms and to measure heterogeneous deformation fields.  Comprehensive insight on multiscale response of the materials under stress can be probed by x-ray scattering methods.

The workshop will bring together scientists in the area of material fabrication, nano-mechanical testing and multiscale in-situ characterization to discuss the advances and needs for advancing fabrication of nanomaterials with tailored mechanical response and revealing their structure-function relationship using in-situ methods.

StartsEndsList of Speakers
8:30 AM 
Continental Breakfast (includes)
8:30 AM8:35 AM Oleg Gang, .
Introduction and Welcome
8:35 AM9:00 AM Jeff Kysar, Columbia University
Multiscale Experiments to Inform and Validate Multiscale Models
9:00 AM9:30 AM Jeffrey M. Wheeler, ETH Zuerich
Combinatorial Micromechanics
9:30 AM10:00 AM Seok-Woo Lee, University of Connecticut
A New Type of Superelastic and Shape Memory Materials: ThCr2Si2-Structured Novel Intermetallic Compounds at Small Length Scales
10:00 AM10:15 AM
Coffee Break (included) and Group Photo
10:15 AM10:45 AM Warren Oliver, Nanomechanic Inc.
Recent Advances in Materials Characterization Using Instrumented Indentation Tests
10:45 AM11:15 AM Douglas Stauffer, Bruker Nano Surfaces
From Experimentation to Understanding in Engineering Devices: In Operando Testing
11:15 AM11:45 AM Lawrence Drummy, Air Force Research Laboratory
In-Situ Mechanical Testing and Fracture Processes in Polymer-Grafted Nanoparticle Assemblies
11:45 AM1:15 PM
Lunch (included)
1:15 PM1:45 PM Bryan Vogt, University of Akron
Understanding Rate Dependent Mechanical Properties of Supramolecular Hydrogels through Real Time SAXS Measurements during Stretching
1:45 PM2:15 PM Elaine Dimasi, Brookhaven National Laboratory
Hierarchical Multi-length-scale Structures in Biomaterials – All They’re Cracked Up To Be
2:15 PM2:45 PM James Weaver, Harvard University
High Resolution Multi-Material Additive Manufacturing: 3D Fabrication of Biologically Inspired Structures
2:45 PM3:00 PM
Coffee Break (included)
3:00 PM3:30 PM Karen Chen-Wiegart, Stony Brook University/Brookhaven National Laboratory
Probing Nano-mechanics of Materials by X-ray Imaging
3:30 PM4:00 PM Elisa Riedo, City University of New York ASRC
Sub-Å-resolution Elasticity and Friction in 2D Van der Waals Materials
4:00 PM5:00 PM
Discussion and Summary Writing
5:00 PM 
Workshop Adjourns
  
Workshop 9 Summary