Jianyi Liu

1 month ago | nature.com | Weijie Zheng |Xingyue Ma |Zhentao Pang |Hongying Chen |Chunyan Zheng |Jianyi Liu | +9 more

Polar skyrmions have demonstrated rich physics and exotic properties for developing novel functionalities. However, so far, skyrmion nanodomains exist only in a few material systems, such as ferroelectric/dielectric superlattices, free-standing PbTiO3/SrTiO3 epitaxial bilayers and ultrathin Pb(Zr,Ti)O3/SrTiO3/Pb(Zr,Ti)O3 sandwiches. These heterostructures are fabricated with elaborately designed boundary conditions to meet the delicate energy balance for stabilizing topological phases. This requirement limits the broad applications of skyrmions in electronic devices. Here we show widespread skyrmion nanodomains in ferroelectric–antiferroelectric solid solutions, composed of ferroelectric PbTiO3 and one antiferroelectric PbSnO3 (Pb(Ti1–xSnx)O3), PbHfO3 (Pb(Ti1–xHfx)O3) or PbZrO3 (Pb(Ti1–xZrx)O3). The skyrmionic textures are formed by engineering dipole–dipole and antiferrodistortive–dipole couplings in competition between ferroelectric and antiferroelectric polar orderings, allowing the stabilization of topological phases. A phase diagram is built for the three solid solution series, revealing the stabilization regions of skyrmion nanodomains. In addition, the non-trivial domains also exhibit improved switching character, reversible writing/erasure and long-term retention for the electrical manipulation of polar configurations. These findings open an avenue for the investigation and exploitation of polar skyrmions in ferroelectric-based materials, providing opportunities in topological electronics. Polar skyrmions are of interest for nanoelectronics due to their exotic properties. However, so far, these are metastable states requiring a delicate balance of boundary conditions to form in heterostructures. In ferroelectric and antiferroelectric solid solutions, skyrmionic textures are observed to form in both bulk and film.

Jul 19, 2024 | onlinelibrary.wiley.com | Emily K. Presseller |Elizabeth A. Velkoff |Devyn R. Riddle |Jianyi Liu

Binge eating and self-induced vomiting are common, transdiagnostic eating disorder (ED) symptoms. Efforts to understand these behaviors in research and clinical settings have historically relied on self-report measures, which may be biased and have limited ecological validity.

Jun 12, 2024 | onlinelibrary.wiley.com | Ross Sonnenblick |Jianyi Liu |Devyn R. Riddle |Stephanie M. Manasse

Understanding the perspectives of behavioral weight loss (BWL) participants could inform whether, how, and for whom BWL should be offered. All 126 participants in a clinical trial of BWL for adults with binge-eating disorder (BED) and overweight/obesity were contacted about a qualitative study. 45 participants, 11 of whom had dropped out of the parent study, completed qualitative interviews.

Jun 6, 2024 | arxiv.org | Yihao Wang |Ru bo Zhang |Jianyi Liu

[Submitted on 6 Jun 2024 ( v1 ), last revised 21 Jun 2024 (this version, v2)] Title:Linguistic Steganalysis via LLMs: Two Modes for Efficient Detection of Strongly Concealed Stego View a PDF of the paper titled Linguistic Steganalysis via LLMs: Two Modes for Efficient Detection of Strongly Concealed Stego, by Yifan Tang and Yihao Wang and Ru Zhang and Jianyi Liu View PDF HTML (experimental) Abstract:To detect stego (steganographic text) in complex scenarios, linguistic steganalysis (LS) with...

Apr 5, 2024 | onlinelibrary.wiley.com | Elizabeth A. Velkoff |Jianyi Liu |Stephanie M. Manasse

DATA AVAILABILITY STATEMENT The data that support the findings of this study are available from the corresponding author upon reasonable request. The data are not publicly available due to privacy or ethical restrictions.