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Publications

ZrNb(CO) RF Superconducting Thin Film with High Critical Temperature in the Theoretical Limit

Cornell Affiliated Author(s)
Author
Z. Sun
T. Oseroff
Z. Baraissov
D.K. Dare
K. Howard
B. Francis
A.C. Hire
N. Sitaraman
T.A. Arias
M.K. Transtrum
R. Hennig
M.O. Thompson
D.A. Muller
M.U. Liepe
Abstract

Superconducting radio-frequency (SRF) resonators are critical components for particle accelerator applications, such as free-electron lasers, and for emerging technologies in quantum computing. Developing advanced materials and their deposition processes to produce RF superconductors that yield nΩ surface resistances is a key metric for the wider adoption of SRF technology. Here, ZrNb(CO) RF superconducting films with high critical temperatures (Tc) achieved for the first time under ambient pressure are reported.

Journal
Advanced Electronic Materials
Date Published
Funding Source
NNCI‐2025233
PHY‐1549132
DMR‐1719875
Group (Lab)
Tomas Arias Group

Machine learning reveals features of spinon Fermi surface

Cornell Affiliated Author(s)
Author
Kevin Zhang
Shi Feng
Yuri Lensky
Nandini Trivedi
Eun-Ah Kim
Abstract

With rapid progress in simulation of strongly interacting quantum Hamiltonians, the challenge in characterizing unknown phases becomes a bottleneck for scientific progress. We demonstrate that a Quantum-Classical hybrid approach (QuCl) of mining sampled projective snapshots with interpretable classical machine learning can unveil signatures of seemingly featureless quantum states.

Journal
communications physics
Date Published
Funding Source
EAGER OSP-136036
PGS-D-557580-2021
GBMF10436
OAC-2118310
EAGER OSP-136036
Ewha Frontier 10-10 Research Grant
920665
DMR-2011876
NSF-DMR 2138905
Group (Lab)

Ultrafast radiographic imaging and tracking: An overview of instruments, methods, data, and applications

Cornell Affiliated Author(s)
Author
Z. Wang
A.F.T. Leong
A. Dragone
A.E. Gleason
R. Ballabriga
C. Campbell
M. Campbell
S.J. Clark
C. Da Vià
D.M. Dattelbaum
M. Demarteau
L. Fabris
K. Fezzaa
E.R. Fossum
S.M. Gruner
T.C. Hufnagel
X. Ju
K. Li
X. Llopart
B. Lukić
A. Rack
J. Strehlow
A.C. Therrien
J. Thom-Levy
F. Wang
T. Xiao
M. Xu
X. Yue
Abstract

Ultrafast radiographic imaging and tracking (U-RadIT) use state-of-the-art ionizing particle and light sources to experimentally study sub-nanosecond transients or dynamic processes in physics, chemistry, biology, geology, materials science and other fields.

Journal
Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Date Published
Group (Lab)
Sol M. Gruner Group

Bragg glass signatures in PdxErTe3 with X-ray diffraction temperature clustering

Cornell Affiliated Author(s)
Author
Krishnanand Mallayya
Joshua Straquadine
Matthew Krogstad
Maja Bachmann
Anisha Singh
Raymond Osborn
Stephan Rosenkranz
Ian Fisher
Eun-Ah Kim
Abstract

The Bragg glass phase is a nearly perfect crystal with glassy features predicted to occur in vortex lattices and charge-density-wave systems in the presence of disorder. Detecting it has been challenging, despite its sharp theoretical definition in terms of diverging correlation lengths. Here we present bulk probe evidence supporting a Bragg glass phase in the systematically disordered charge-density-wave material of PdxErTe3. We do this by using comprehensive X-ray data and a machine-learning-based analysis tool called X-ray diffraction temperature clustering (X-TEC).

Journal
Nature Physics
Date Published
Funding Source
DE-SC0018946
GBMF10436
DE-AC02-76SF00515
Group (Lab)

Cell-Derived Vesicles with Increased Stability and On-Demand Functionality by Equipping Their Membrane with a Cross-Linkable Copolymer

Cornell Affiliated Author(s)
Author
X. Huang
D. Hürlimann
H.T. Spanke
D. Wu
M. Skowicki
I.A. Dinu
E.R. Dufresne
C.G. Palivan
Abstract

Cell-derived vesicles retain the cytoplasm and much of the native cell membrane composition. Therefore, they are attractive for investigations of membrane biophysics, drug delivery systems, and complex molecular factories. However, their fragility and aggregation limit their applications. Here, the mechanical properties and stability of giant plasma membrane vesicles (GPMVs) are enhanced by decorating them with a specifically designed diblock copolymer, cholesteryl-poly[2-aminoethyl methacrylate-b-poly(ethylene glycol) methyl ether acrylate].

Journal
Advanced Healthcare Materials
Date Published
Research Area
Group (Lab)
Eric Dufresne Group

Elastic microphase separation produces robust bicontinuous materials

Cornell Affiliated Author(s)
Author
C. Fernández-Rico
S. Schreiber
H. Oudich
C. Lorenz
A. Sicher
T. Sai
V. Bauernfeind
S. Heyden
P. Carrara
L.D. Lorenzis
R.W. Style
E.R. Dufresne
Abstract

Bicontinuous microstructures are essential to the function of diverse natural and synthetic systems. Their synthesis has been based on two approaches: arrested phase separation or self-assembly of block copolymers. The former is attractive for its chemical simplicity and the latter, for its thermodynamic robustness. Here we introduce elastic microphase separation (EMPS) as an alternative approach to make bicontinuous microstructures. Conceptually, EMPS balances the molecular-scale forces that drive demixing with large-scale elasticity to encode a thermodynamic length scale.

Journal
Nature Materials
Date Published
Group (Lab)
Eric Dufresne Group

Multivalency ensures persistence of a +TIP body at specialized microtubule ends

Cornell Affiliated Author(s)
Author
S.M. Meier
A.-M. Farcas
A. Kumar
M. Ijavi
R.T. Bill
J. Stelling
E.R. Dufresne
M.O. Steinmetz
Y. Barral
Abstract

Microtubule plus-end tracking proteins (+TIPs) control microtubule specialization and are as such essential for cell division and morphogenesis. Here we investigated interactions and functions of the budding yeast Kar9 network consisting of the core +TIP proteins Kar9 (functional homologue of APC, MACF and SLAIN), Bim1 (orthologous to EB1) and Bik1 (orthologous to CLIP-170). A multivalent web of redundant interactions links the three +TIPs together to form a ‘+TIP body’ at the end of chosen microtubules.

Journal
Nature Cell Biology
Date Published
Group (Lab)
Eric Dufresne Group

The generalized Clapeyron equation and its application to confined ice growth

Cornell Affiliated Author(s)
Author
R.W. Style
D. Gerber
A.W. Rempel
E.R. Dufresne
Abstract

Most theoretical descriptions of stresses induced by freezing are rooted in the (generalized) Clapeyron equation, which predicts the pressure that a solid can exert as it cools below its melting temperature. This equation is central for topics ranging beyond glaciology to geomorphology, civil engineering, food storage and cryopreservation. However, it has inherent limitations, requiring isotropic solid stresses and conditions near bulk equilibrium. Here, we examine when the Clapeyron equation is applicable by providing a rigorous derivation that details all assumptions.

Journal
Journal of Glaciology
Date Published
Group (Lab)
Eric Dufresne Group

Anterior forebrain pathway in parrots is necessary for producing learned vocalizations with individual signatures

Cornell Affiliated Author(s)
Author
Z. Zhao
H.K. Teoh
J. Carpenter
F. Nemon
B. Kardon
I. Cohen
J.H. Goldberg
Abstract

Parrots have enormous vocal imitation capacities and produce individually unique vocal signatures. Like songbirds, parrots have a nucleated neural song system with distinct anterior (AFP) and posterior forebrain pathways (PFP). To test if song systems of parrots and songbirds, which diverged over 50 million years ago, have a similar functional organization, we first established a neuroscience-compatible call-and-response behavioral paradigm to elicit learned contact calls in budgerigars (Melopsittacus undulatus).

Journal
Current Biology
Date Published
Research Area
Group (Lab)
Itai Cohen Group

Comparing study features is easy but identifying next steps is hard: Evaluating critical thinking through the Biology Lab Inventory of Critical Thinking in Ecology

Cornell Affiliated Author(s)
Author
A.B. Heim
D. Esparza
N.G. Holmes
M.K. Smith
Abstract

Critical thinking, which can be defined as the evidence-based ways in which people decide what to trust and what to do, is an important competency included in many undergraduate science, technology, engineering, and mathematics (STEM) courses. To help instructors effectively measure critical thinking, we developed the Biology Lab Inventory of Critical Thinking in Ecology (Eco-BLIC), a freely available, closed-response assessment of undergraduate students' critical thinking in ecology.

Journal
Ecology and Evolution
Date Published
Group (Lab)
Natasha Holmes Group