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tsukuba #586

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70 changes: 49 additions & 21 deletions db/citations.yml
Original file line number Diff line number Diff line change
Expand Up @@ -1831,7 +1831,15 @@ billi;lsfd98:
wwwlanl: ''
year: '1998'
billi;m24:
ackno: ''
ackno: The authors thank Dr. Sanjit Ghose for help with the synchrotron experiments,
including designing and constructing a temperature stage. I.H.B. thanks Kinnari
M. Shah, Eliza Dach, and Sherry Zhang for useful conversations and Marshall Tekell
for help with SAXS measurements. Work in the Yip lab was based upon work supported
by the US Department of Energy, Office of Science, Basic Energy Sciences under
award no. DE-SC0024574. Work in the Billinge group in the Applied Physics and
Applied Mathematics Department was supported by the US Department of Energy, Office
of Science, Office of Basic Energy Sciences under contract no. DE-SC0024141. C.H.T.
acknowledges support from the US Bureau of Reclamation, no.R23AC00435.
author:
- Ian Henry Billinge
- Gabriel D. Barbosa
Expand All @@ -1840,16 +1848,16 @@ billi;m24:
- C. Heath Turner
- Simon J. L. Billinge
- Ngai Yin Yip
doi: ''
doi: 10.1016/j.matt.2024.09.023
entrytype: article
facility: ''
facility: nslsii, xpd, pdf
grant: doeneutron23
journal: Matter
month: mar
month: jan
nb: ''
note: Submitted
number: ''
pages: ''
optnote: Submitted
pages: 1--12
professional_summary: 'An emerging technology for obtaining pure water from highly
saline brines, and also for chemical extractions from similar feedstocks, is to
use thermal solvent swing extraction (TSSE) methods. These rely on liquids with
Expand All @@ -1870,9 +1878,9 @@ billi;m24:
tags: amine, liquid, lcst
title: A structural underpinning of the lower critical solution temperature (LCST)
behavior behind temperature-switchable liquids
url: ''
volume: ''
year: '2024'
url: https://doi.org/10.1016/j.matt.2024.09.023
volume: '8'
year: '2025'
billi;mrssp99:
author:
- Billinge, S. J. L.
Expand Down Expand Up @@ -11315,6 +11323,29 @@ shi;jpcc13:
wwwemail: ''
wwwpub: http://slapper.apam.columbia.edu/bib-eu9iifae/papers/shi_jpcc13.pdf
year: '2013'
shi;m24:
ackno: tbd
author:
- Changmin Shi
- Simon J. L. Billinge
doi: ''
entrytype: article
facility: ''
grant: doeneutron23
journal: Matter
month: tbd
nb: ''
note: Submitted
number: ''
pages: ''
professional_summary: A group working class pedagogy is described as well as personal
anecdotes about different strategies for succhessful implementaion.
synopsis: The approach of group work on worksheets is laid out
tags: teaching, pedagogy
title: Teaching materials science and engineering students in the 21st century
url: ''
volume: ''
year: '2024'
shi;nm13i:
author:
- Shi, X.
Expand Down Expand Up @@ -11880,34 +11911,31 @@ taher;mrsb23:
tao;cm23:
ackno: Use of the National Synchrotron Light Source II, Brookhaven National Laboratory,
was supported by the U.S. Department of Energy, Office of Science, Office of Basic
Energy Sciences, under Contract No. DE-SC0012704. PDF analysis, modeling and writing
were supported by the U.S. National Science Foundation through grant DMREF-1922234.
Nanocrystal synthesis was supported by funding from Ghent University
Energy Sciences, under Contract No. DE-SC0012704. Nanocrystal synthesis was supported
by funding from Ghent University
author:
- Songsheng Tao
- Jonas Billet
- Jonathan De Roo
- Simon J. L. Billinge
doi: ''
doi: 10.1021/acs.chemmater.3c03002
entrytype: article
facility: nslsii, xpd
grant: dmref19
grant: doeneutron23
journal: Chem Mater
month: tbd
nb: ' art '
note: submitted
month: oct
nb: ''
number: ''
optannote: ''
optwwwlanl: ''
optnote: submitted
pages: ''
synopsis: A detailed case study is presented in how to model nanoparticle stucture
from the PDF using diffpy cmi and attenuated crystal models
tags: tio2, nanoparticle, oxide_nanoparticle, modeling
title: 'Rapid modeling of the local structure of metal oxide nanoparticles from
{PDF} data: A Case Study using {TiO$_2$} nanoparticles'
url: ''
url: https://pubs.acs.org/doi/full/10.1021/acs.chemmater.3c03002
volume: ''
year: '2023'
year: '2024'
terba;cec22:
ackno: DH and MM would like to thank University of Trieste for partially funding
this study through the “Fondo per la Ricerca di Ateneo (FRA 2020)” grant scheme.
Expand Down
4 changes: 2 additions & 2 deletions db/people.yml
Original file line number Diff line number Diff line change
Expand Up @@ -1701,7 +1701,7 @@ fatassi:
fballerini:
active: true
aka: []
avatar: https://github.com/filippo1598.png
avatar: https://github.com/fil158.png
bio: bio
education: []
email: filippo.ballerini@unimi.it
Expand All @@ -1713,7 +1713,7 @@ fballerini:
group: bg
advisor: sbillinge
status: visitor-unsupported
github_id: filippo1598
github_id: fil158
grp_mtg_active: true
name: Filippo Ballerini
orcid_id: 0009-0006-7970-7341
Expand Down
47 changes: 26 additions & 21 deletions db/presentations.yml
Original file line number Diff line number Diff line change
Expand Up @@ -5768,25 +5768,30 @@
title: 'Watching real materials in Action: everything, everywhere, all at once'
type: colloquium
2411sb_shivnadarinstitutionofeminence-delhincr,india:
abstract: "Density functional theory has revolutionized our understanding of materials. but can it also lead
us astray when it gets things wrong? We understand that DFT is approximate because of the poorly determined
exchange correlation functional. However, in this talk I would like to bring up another issue that I
think does not get sufficient attention: that DFT is generally carried out on the average structure of a
material. What I mean by average structure is that the inputs to DFT are generally the crystal structure of
the material. The crystal structure is a periodically averaged version of the actual structure. In the
absence of disorder the average structure and the actual structure are the same. However, in the presence
of defects and other non-periodic components to the structure, the actual structure is different from the
average structure, so we are feeding DFT the wrong structure. Does this matter? In other words, if
there are small defects, is the DFT electronic structure a good starting point and we can perturbatively
find the actual behavior? I will argue that actually this is not the case in general, because the
average of the properties is not equal to the properties of the average. This is strictly true even if
the defects are small (e.g., phonons) but in practice is probably not a big deal. However, local
structural measurements using x-ray and neutron total scattering and PDF measurements, often indicate
that materials with interesting properties have quite highly perturbed broken symmetry local structures.
In this case, DFT can yield qualitatively incorrect predictions of properties, as we will discuss.
However, emerging methods that use machine-learned potentials open the door to methods that can address
this issue in practice. I am not an expert in DFT, so this talk is more a call-to-arms and a description
of the problem rather than describing actual solutions."
abstract: 'Density functional theory has revolutionized our understanding of materials.
but can it also lead us astray when it gets things wrong? We understand that
DFT is approximate because of the poorly determined exchange correlation functional. However,
in this talk I would like to bring up another issue that I think does not get
sufficient attention: that DFT is generally carried out on the average structure
of a material. What I mean by average structure is that the inputs to DFT are
generally the crystal structure of the material. The crystal structure is a periodically
averaged version of the actual structure. In the absence of disorder the average
structure and the actual structure are the same. However, in the presence of
defects and other non-periodic components to the structure, the actual structure
is different from the average structure, so we are feeding DFT the wrong structure. Does
this matter? In other words, if there are small defects, is the DFT electronic
structure a good starting point and we can perturbatively find the actual behavior? I
will argue that actually this is not the case in general, because the average
of the properties is not equal to the properties of the average. This is strictly
true even if the defects are small (e.g., phonons) but in practice is probably
not a big deal. However, local structural measurements using x-ray and neutron
total scattering and PDF measurements, often indicate that materials with interesting
properties have quite highly perturbed broken symmetry local structures. In this
case, DFT can yield qualitatively incorrect predictions of properties, as we will
discuss. However, emerging methods that use machine-learned potentials open the
door to methods that can address this issue in practice. I am not an expert in
DFT, so this talk is more a call-to-arms and a description of the problem rather
than describing actual solutions.'
authors:
- sbillinge
begin_date: 2024-11-10
Expand All @@ -5797,8 +5802,8 @@
project:
- all
status: accepted
title: 'All density functional theory ({DFT}) is wrong: the average of the properties
$\ne$ the properties of the average'
subtitle: the average of the properties $\ne$ the properties of the average
title: All density functional theory ({DFT}) is wrong
type: invited
2411sb_tsukuba,japan:
abstract: At the heart of materials science studies for next generation materials
Expand Down
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