Enhancement of ferroelectric properties, both spontaneous polarization and Curie temperature under negative pressure had been predicted in the past from first principles and recently confirmed experimentally. In contrast, piezoelectric properties are expected to increase by positive pressure, through polarization rotation. Here we investigate the piezoelectric response of the classical PbTiO3, Pb(Zr,Ti)O3 and BaTiO3 perovskite ferroelectrics under negative pressure from first principles and find significant enhancement. Piezoelectric response is then tested experimentally on free-standing PbTiO3 and Pb(Zr,Ti)O3 nanowires under self-sustained negative pressure, confirming the theoretical prediction. Numerical simulations verify that negative pressure in nanowires is the origin of the enhanced electromechanical properties. The results may be useful in the development of highly performing piezoelectrics, including lead-free ones.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4942569 | PMC |
| http://dx.doi.org/10.1038/ncomms12136 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Abdominal wound dehiscence after appendectomy during pregnancy treated by negative pressure wound therapy with subsequent vaginal delivery: A case report and literature review.
Int J Gynaecol Obstet
January 2025
Department of Obstetrics and Gynecology, Third Faculty of Medicine, Charles University and University Hospital Kralovske Vinohrady, Prague 10, Czech Republic.
Negative pressure wound therapy (NPWT) is a very effective method in the treatment of dehiscent, infected, and non-healing wounds. Difficult wound healing occurs especially in late pregnancy due to the rapid enlargement of the uterus and the constantly increasing tension of the entire abdominal wall. In cases of dehiscence of the surgical wound during pregnancy, proper subsequent treatment is needed, where it is necessary to consider the safety of the mother as well as the fetus.
View Article and Find Full Text PDFNegative experiences with primary care services in Norway expressed in patient and next-of-kin complaints - a qualitative study.
BMC Health Serv Res
January 2025
Department of Psychosocial Health, Faculty of Health and Sports Sciences, University of Agder, Grimstad, Norway.
Background: Primary health care has been central to achieving universal health coverage. In Norway, there has been increased pressure on primary care services in recent years. Patient complaints offer key insights into care quality, and qualitative analysis of patient complaints can help healthcare professionals reflect on and improve their practices.
View Article and Find Full Text PDFCross-sectional and longitudinal associations between serum vitamin D and continuous metabolic syndrome score among children and adolescents: roles of levels of inflammation in peripheral blood.
Nutr Metab (Lond)
January 2025
Shenzhen Center for Chronic Disease Control, No. 2021 Buxin Road, Luohu District, Shenzhen, 518020, China.
Background: Serum vitamin D deficiency is intricately linked to metabolic disorders, however, evidence on its association with continuous metabolic risk in children and adolescents remains insufficient. This study aims to elucidate the relationship between serum vitamin D levels and continuous metabolic risk.
Methods: The cross-sectional analysis involved 4490 participants aged 6 ~ 18, and the longitudinal investigation included 1398 individuals aged 6 ~ 12 years.
Combined negative pressure wound therapy with new wound dressings to repair a ruptured giant omphalocele in a neonate: a case report and literature review.
BMC Pediatr
January 2025
Department of Neonatology Nursing, West China Second University Hospital, Sichuan University, No. 20, Section 3, South Renmin Road, Chengdu, Sichuan Province, China.
Background: Current treatment of giant omphalocele in newborns is not standardized. The main treatments include one-time repair and staged surgery using synthetic and biologic mesh, or silos. However, surgery can lead to various postoperative complications.
View Article and Find Full Text PDFImpact of pediatric COVID-19 isolation on children's well-being and caregiver mental health.
BMC Pediatr
January 2025
Department of Pediatrics, Seoul Metropolitan Government-Seoul National University Boramae Medical Center, Seoul, 07061, Korea.
Background: The Korean government implemented mandatory hospital isolation in the early phase of the COVID-19 pandemic. This study investigated the mental health of children and caregivers who underwent mandatory hospital isolation due to COVID-19.
Methods: This prospective study examined the physical condition and mental health of children under 7 years of age with COVID-19 and the mental health of their caregivers who underwent isolation in negative pressure rooms at two hospitals in Korea from April to September 2021.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!