Category: chemistry retractions

Physics paper’s results off by factor of 100

Researchers from China have retracted a physics paper after realizing an error led them to report results that were nearly 100 times too large.

What’s more, the authors omitted key findings that would enable others to reproduce their experiments.

According to the notice, the authors used a value to calculate a feature of electrons—called mobility—that “was approximately 100 times too small,” which led to results that were “100 times too large.” The notice also details several gaps in the presentation of experimental results, which preclude others from duplicating the experiments.

Here’s the retraction notice for “Bulk- and layer-heterojunction phototransistors based on poly[2-methoxy-5-(2′-ethylhexyloxy-p-phenylenevinylene)] and PbS quantum dot hybrids:” Continue reading Physics paper’s results off by factor of 100

Why don’t the raw data match what was reported in a chemistry paper?

Chemistry researchers in China have retracted their 2016 paper after reporting that the raw data did not match what they presented in the article.

The authors were attempting to develop a method to produce large amounts of a high-quality two-dimensional form of antimonene, a prized crystal structure that has been notoriously difficult to synthesize reliably.

They were successful, according to the paper, achieving “a large quantity of few-layer antimonene” and demonstrating its “exact atomical structure” and properties.

But they may have spoken too soon. Continue reading Why don’t the raw data match what was reported in a chemistry paper?

Prominent physicist loses paper over data falsification

A paper by a promising nanotechnologist has been retracted for data falsification.

Dmitri Lapotko, a Belarusian researcher with a background in laser weaponry, made a name for himself at Rice University in Houston, where he studied the use of nanotechnology to diagnose and treat human diseases. That work earned him significant press coverage, including stories in the New York Times and Science.

But that nanobubble may be bursting. The journal Theranostics has retracted a 2011 paper on which Lapotko is the last and corresponding author, citing questions over data falsification. What’s more, another journal has warned readers there may be a problem with a figure in a 2012 paper on which Lapotko is listed as last author.

Lapotko has since left Rice for Masimo Corp., a developer of monitoring devices for patients in the operating room.

According to the Theranostics notice:

Continue reading Prominent physicist loses paper over data falsification

Two retracted papers were published behind bosses’ backs

Researchers have retracted two 2016 papers from the same journal which were published without the permission of the supervising scientists.

According to the retraction notices, the two Applied Materials & Interfaces articles were “published without the full knowledge or consent of the principal investigators” who guided the research, but are not named in the notices.

The papers share the same three authors, listed in the same order. Last author Fangqiong Tang and middle author Laifeng Li are principal investigators in different labs at the Chinese Academy of Sciences in Beijing. First author Nanjing Hao was formerly in Tang’s research group, but is now at Dartmouth College in New Hampshire.

Here’s the retraction notice for “Fabrication of Carbohydrate-Conjugated Fingerprintlike Mesoporous Silica Net for the Targeted Capture of Bacteria,” which was retracted only months after it was published in November 2016: Continue reading Two retracted papers were published behind bosses’ backs

Faked data, plagiarism, no co-author okays…yeah, this paper’s been retracted

A researcher in South Korea has retracted a 2016 paper on which he is listed as senior author because a former student wrote and published the article without his permission.

According to the retraction notice, the former student also fabricated data and plagiarized “a substantial amount of material” from previous papers published by the senior and middle author.

Here’s the retraction notice for “Oleaginous yeast-based production of microbial oil from volatile fatty acids obtained by anaerobic digestion of red algae (Gelidium amansii),” published in the Korean Journal of Chemical Engineering in April 2016 and retracted in January: Continue reading Faked data, plagiarism, no co-author okays…yeah, this paper’s been retracted

Paper quickly retracted after author used another group’s work

The author of a 2016 paper has agreed to retract it after an investigation revealed that most of the article came from another research group at the same university.

According to the notice, the author based the majority of his paper on results generated by other scientists without their permission.

Here’s the retraction notice for “Controlled synthesis of magnetic block copolymers for anti-microbial purpose,” published in the Journal of Applied Polymer Science in November and retracted in February: Continue reading Paper quickly retracted after author used another group’s work

Elsevier to retract six more papers by computer scientist, citing duplication and fake reviews

Yesterday we reported that Elsevier journals had pulled three papers by a computer scientist with an impressive publication record. The publisher has since informed us that it plans to pull six more, again citing duplication and manipulation of the peer-review process.

Shahaboddin Shamshirband at the University of Malaya in Kuala Lumpur, Malaysia’s record will be down by a total of nine papers once the publisher issues the additional notices. We also found evidence that an additional paper was removed by a journal, but haven’t confirmed if that’s a retraction.

One of Shamshirband’s co-authors has objected to one of the retractions Elsevier has already issued for faked reviews, arguing the reviewers were PhD students without institutional email addresses. A spokesperson for Elsevier told us:

Continue reading Elsevier to retract six more papers by computer scientist, citing duplication and fake reviews

Authors contest retractions for “high degrees of similarity” with previous papers

A group of researchers has lost two papers due to “high degrees of similarity with previously published works,” according to the notices.

The authors are objecting to the retractions, however, arguing the journal never gave them an opportunity to show their work is different from the previous papers.

Both papers were published in the International Journal of Plastics Technology, and share the same three authors, all based at Charan Singh University in India. They were retracted by the Editor in Chief, according to the notices.

“Effect of dynamic cross-linking on melt rheological properties of isotactic polypropylene (iPP)/ethylene–propylene diene rubber (EPDM)/nitrile rubber (NBR) elastomeric blends” was published in 2011. Here’s the retraction notice:

Continue reading Authors contest retractions for “high degrees of similarity” with previous papers

Researchers submit two similar papers 8 days apart; one is retracted

After a research group submitted two similar papers only days apart to different journals, one journal has retracted the paper — and told the other it should do the same.

The papers, by a group of authors based in Romania, describe a new polymer to stop the formation of biofilms. After a reader flagged the papers — which were submitted within eight days of each other in September, 2015 — as being similar, a journal has retracted one, and recommended the other journal retract the second. Although the second journal told us it planned to flag the paper with a notice alerting readers to the duplication, the notice has not yet appeared online.

The journal that issued the retraction — the International Journal of Polymer Analysis and Characterization (IJPAC) — called it a “a clear case of self-plagiarism,” according to the notice:

Continue reading Researchers submit two similar papers 8 days apart; one is retracted

Nuclear fuel container material isn’t as novel as it appeared in now-retracted paper

A layer of copper sprayed onto steel. (Figure 6 from “Structure and Mechanical Properties of Thick Copper Coating Made by Cold Spray“)

A paper describing the construction of a material that could be used in nuclear fuel containers has been retracted after the authors left out key details.

According to the editor, the omission made the authors’ method seem more novel than it was.

The material is described in “Structure and Mechanical Properties of Thick Copper Coating Made by Cold Spray.” It was published in the January 2016 issue of the Journal of Thermal Spray Technology.

According to the retraction notice, the authors did not specify in the paper how the first layer of copper was sprayed onto the steel:

Continue reading Nuclear fuel container material isn’t as novel as it appeared in now-retracted paper