Evidence map›Paper›PMID 40399263›Full record

ArticleNature communications2025

Nano-engineered thin-film thermoelectric materials enable practical solid-state refrigeration.

Jake Ballard, Matthew Hubbard, Sung-Jin Jung, Vanessa Rojas, Richard Ung, Junwoo Suh, MinSoo Kim, Joonhyun Lee, Jonathan M Pierce, Rama Venkatasubramanian

Abstract read
In one paragraph

Article in Nature communications, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing 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

5 citing papers in PubMed.

  1. Article
  2. Review
  3. Interface-Engineered BiSmall (Weinheim an der Bergstrasse, Germany) · 2026
    Article
  4. Article
  5. Review
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.

Jake BallardJohns Hopkins University Applied Physics Laboratory (JHUAPL), Laurel, MD, USA.ORCID http://orcid.org/0000-0002-1108-9034
Matthew HubbardJohns Hopkins University Applied Physics Laboratory (JHUAPL), Laurel, MD, USA.
Sung-Jin JungSamsung Research, Samsung Electronics, Seoul, 06765, Republic of Korea.
Vanessa RojasJohns Hopkins University Applied Physics Laboratory (JHUAPL), Laurel, MD, USA.
Richard UngJohns Hopkins University Applied Physics Laboratory (JHUAPL), Laurel, MD, USA.
Junwoo SuhSamsung Research, Samsung Electronics, Seoul, 06765, Republic of Korea.
MinSoo KimSamsung Research, Samsung Electronics, Seoul, 06765, Republic of Korea.
Joonhyun LeeSamsung Research, Samsung Electronics, Seoul, 06765, Republic of Korea.
Jonathan M PierceJohns Hopkins University Applied Physics Laboratory (JHUAPL), Laurel, MD, USA.
Rama VenkatasubramanianJohns Hopkins University Applied Physics Laboratory (JHUAPL), Laurel, MD, USA. rama.venkatasubramanian@jhuapl.edu.ORCID http://orcid.org/0000-0001-6818-879X

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Refrigeration needs are increasing worldwide with a demand for alternates to bulky poorly scalable vapor compression systems. Here, we demonstrate the first proof of practical solid-state refrigeration, using nano-engineered controlled hierarchically engineered superlattice thin-film thermoelectric materials. With 100%-better thermoelectric materials figure of merit, ZT, than the conventional bulk materials near 300 K, we demonstrate (i) module-level ZT greater than 75% and (ii) a system-level refrigeration ZT 70% better than that of bulk devices. Thin-film thermoelectric modules offer 100-300% better coefficient-of-performance than bulk devices depending on operational scenarios; system-level coefficient-of-performance is ~15 for temperature differentials of 1.3 °C. The thin-film devices enable more heat pumping per P-N couple, relevant for distributed and portable refrigeration, and electronics cooling. Beyond the demonstration of nano-engineered materials for a system-level advantage, we utilize 1/1000

Identifiers

PMID40399263
PMCPMC12095565

What OpenQuestion holds

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LicenceCC BY-NC-ND
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Registered trials

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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.