Evidence map›Paper›PMID 40959162›Full record

ArticleTribology letters2025

Linear Reciprocating Tribometer for In Situ Neutron Reflectometry of Soft Matter.

Kathryn E Shaffer, Brendan Louie Bagorio, Ahmed Al Kindi, Julia J Ong, Andrew R Rhode, Erik B Watkins, Rebecca J L Welbourn, Roger Pynn, Juan Manuel Urueña, Angela A Pitenis

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Tribology letters, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

1 citing paper in PubMed.

  1. In Situ High Shear Perturbation of Surface Molecular Layers with Neutron Reflectivity.Langmuir : the ACS journal of surfaces and colloids · 2026
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors.

Kathryn E ShafferMaterials Department, University of California, Santa Barbara, Santa Barbara, CA 93106, USA.
Brendan Louie BagorioDepartment of Mechanical Engineering, University of California, Santa Barbara, Santa Barbara, CA 93106, USA.
Ahmed Al KindiDepartment of Mechanical Engineering, University of California, Santa Barbara, Santa Barbara, CA 93106, USA.
Julia J OngMaterials Department, University of California, Santa Barbara, Santa Barbara, CA 93106, USA.
Andrew R RhodeMaterials Department, University of California, Santa Barbara, Santa Barbara, CA 93106, USA.
Erik B WatkinsOak Ridge National Laboratory, Oak Ridge, TN 37831, USA.
Rebecca J L WelbournOak Ridge National Laboratory, Oak Ridge, TN 37831, USA.
Roger PynnMaterials Research Laboratory, University of California, Santa Barbara, Santa Barbara, CA 93106, USA.
Juan Manuel UrueñaNSF BioPACIFIC Materials Innovation Platform, University of California, Santa Barbara, Santa Barbara, CA 93106, USA.
Angela A PitenisMaterials Department, University of California, Santa Barbara, Santa Barbara, CA 93106, USA.

Funding

Predoctoral Training Program in Quantitative MechanobiologyT32GM141846 · NIGMS · UNIVERSITY OF CALIFORNIA SANTA BARBARA · PI Siddharth Subhas Dey, Beth L Pruitt · 2021 to 2026
$1.9M
NIGMS NIH HHS T32 GM141846
6 · The paper itself

Abstract

Neutron reflectometry is a technique for measuring structure near planar interfaces that has been previously used to non-destructively characterize the polymer density of hydrated, dilute, and soft materials. Previous investigations have conducted neutron reflectometry measurements of liquids, gels, emulsion, and polymer solutions at rest, in compression, and subject to shear stress. However, correlating structure with tribological properties of soft materials presents significant experimental challenges for prior instruments due to wall slip, sample thickness, and structural heterogeneity (e.g., depth-wise gradients). A linear reciprocating tribometer offers several advantages for in situ neutron reflectometry studies, including uniform velocity profiles, constant shear stress over large regions of interest, and independent control of normal force and sliding velocity during measurements. This work outlines basic considerations for the design of a custom linear reciprocating tribometer that operates in a neutron beamline and includes commissioning measurements. The tribometer is designed to compress soft and hydrated materials against linearly reciprocating silicon disks. The three key design considerations for this tribometer are (1) safety, (2) neutron transmission, and (3) sample positioning. This instrument design will enable in situ studies of soft matter and illuminate the role of interfacial structure on tribological phenomena.

Indexed as

Neutron reflectometrySoft matterTribometer design

Identifiers

PMID40959162
PMCPMC12435397

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.