keyword
https://read.qxmd.com/read/38700382/exceptional-behavior-of-a-high-temperature-superconductor-in-proximity-to-a-ferromagnet-in-a-bilayer-film-la-0-67-sr-0-33-mno-3-yba-2-cu-3-o-7
#21
JOURNAL ARTICLE
Ankita Singh, Sawani Datta, Ram Prakash Pandeya, Srinivas C Kandukuri, Rudheer Bapat, Jayesh Parmar, Kalobaran Maiti
We studied the electronic properties of a high-temperature superconductor in proximity to a ferromagnetic material in a bilayer film of La0.67 Sr0.33 MnO3 (LSMO)/YBa2 Cu3 O7 (YBCO). High-quality single-crystalline films of YBCO and LSMO/YBCO were grown epitaxially on an SrTiO3 (001) surface. Magnetization data of the LSMO/YBCO bilayer exhibit ferromagnetic transition at about 255 K, which is much smaller than the Curie temperature of bulk LSMO. Experimental data show the emergence of magnetic anisotropy with cooling, which becomes significantly stronger in the superconducting phase...
May 3, 2024: Nanoscale
https://read.qxmd.com/read/38700233/high-volumetric-energy-density-supercapacitor-of-additive-free-quantum-dot-hierarchical-nanopore-structure
#22
JOURNAL ARTICLE
Muhammad Alief Irham, Ricky Dwi Septianto, Retno Dwi Wulandari, Yutaka Majima, Ferry Iskandar, Yoshihiro Iwasa, Satria Zulkarnaen Bisri
The high surface-area-to-volume ratio of colloidal quantum dots (QDs) positions them as promising materials for high-performance supercapacitor electrodes. However, the challenge lies in achieving a highly accessible surface area, while maintaining good electrical conductivity. An efficient supercapacitor demands a dense yet highly porous structure that facilitates efficient ion-surface interactions and supports fast charge mobility. Here we demonstrate the successful development of additive-free ultrahigh energy density electric double-layer capacitors based on quantum dot hierarchical nanopore (QDHN) structures...
May 3, 2024: ACS Applied Materials & Interfaces
https://read.qxmd.com/read/38700054/fabrication-of-a-wearable-and-foldable-photodetector-based-on-a-wse-2-mxene-2d-2d-heterostructure-using-a-scalable-handprint-technique
#23
JOURNAL ARTICLE
Rahul P Patel, Parth V Shah, Sohel Siraj, Parikshit Sahatiya, Pratik M Pataniya, C K Sumesh
Several studies on semiconductor material-based single-band, high-performance photosensitive, and chemically stable photodetectors are available; however, the lack of broad spectral response, device flexibility, and biodegradability prevents them from being used in wearable and flexible electronics. Apart from that, the selection of the device fabrication technique is a very crucial factor nowadays in terms of equipment utilization and environmental friendliness. This report presents a study demonstrating a straightforward solvent- and equipment-free handprint technique for the fabrication of WSe2 -Ti3 C2 T X flexible, biodegradable, robust, and broadband (Vis-NIR) photodetectors...
May 3, 2024: Nanoscale
https://read.qxmd.com/read/38700046/impact-of-temperature-on-physical-and-cognitive-performance-in-elite-female-football-players-during-intermittent-exercise
#24
JOURNAL ARTICLE
Alberto Pompeo, José Afonso, Everton Luis Rodrigues Cirillo, Júlio A Costa, José Vilaça-Alves, Nuno Garrido, Sixto González-Víllora, Andrew Mark Williams, Filipe Casanova
There is limited research on female football players, especially related to their physical and cognitive performance under different climactic conditions. We analyzed the impact of a hot environmental temperature on physical performance and anticipation in elite female football players during a fatigue-inducing intermittent protocol. Elite female players (n = 21) performed the countermovement jump (CMJ) and responded to filmed sequences of offensive play under two distinct environmental temperatures (i...
May 2024: Scandinavian Journal of Medicine & Science in Sports
https://read.qxmd.com/read/38699952/a-stretchable-and-tough-graphene-film-enabled-by-mechanical-bond
#25
JOURNAL ARTICLE
Chunyu Wang, Boyue Gao, Fuyi Fang, Wenhao Qi, Ge Yan, Jun Zhao, Wenbin Wang, Ruixue Bai, Zhaoming Zhang, Zhitao Zhang, Wenming Zhang, Xuzhou Yan
The pursuit of fabricating high-performance graphene films has aroused considerable attention due to their potential for practical applications. However, developing both stretchable and tough graphene films remains a formidable challenge. To address this issue, we herein introduce mechanical bond to comprehensively improve the mechanical properties of graphene films, utilizing [2]rotaxane as the bridging unit. Under external force, the [2]rotaxane cross-link undergoes intramolecular motion, releasing hidden chain and increasing the interlayer slip distance between graphene nanosheets...
May 3, 2024: Angewandte Chemie
https://read.qxmd.com/read/38699791/nanoparticle-assembly-by-transient-topography-induced-by-applying-soft-lithography-to-block-copolymer-films
#26
JOURNAL ARTICLE
Meneka Banik, Roy Shenhar
We present a simple approach for patterning metal nanoparticles into periodic superstructures on flat films spanning centimeter-square areas. Our approach is based on capillary force lithography, a soft lithography method that is used to impart topography to molten polymer films, and applies it to block copolymer films to obtain substrates featuring both topographic and chemical contrasts that can serve as templates for the selective deposition of nanoparticles. Here we show that flattening the films by exposure to solvent vapour prior to nanoparticle deposition not only retains chemical heterogeneity but also provides access to unique hierarchically-organized nanoparticle superstructures that are unattainable by other methods...
May 3, 2024: Soft Matter
https://read.qxmd.com/read/38699686/evaluation-of-ferroelectricity-in-a-distorted-wurtzite-type-structure-of-sc-doped-ligao-2
#27
JOURNAL ARTICLE
Sou Yasuhara, Ayato Nakagawa, Kazuki Okamoto, Takahisa Shiraishi, Hiroshi Funakubo, Shintaro Yasui, Mitsuru Itoh, Takaaki Tsurumi, Takuya Hoshina
Since the discovery of ferroelectricity in a wurtzite-type structure, this structural type has gathered much attention as a next-generation ferroelectric material due to its high polarization value combined with its high breakdown strength. However, the main targets of wurtzite-type ferroelectrics have been limited thus far to simple nitride/oxide compounds. The investigation of new ferroelectric materials with wurtzite-type structures is important for understanding ferroelectricity in such structures. We therefore focus on β-LiGaO2 in this study...
April 25, 2024: RSC Advances
https://read.qxmd.com/read/38699670/commissioning-and-assessment-of-radiation-field-and-dose-inhomogeneity-for-a-dual-x-ray-tube-cabinet-irradiator-to-ensure-accurate-dosimetry-in-radiation-biology-experiments
#28
JOURNAL ARTICLE
Mitchell Polizzi, Kristoffer Valerie, Siyong Kim
PURPOSE: Standardization of x-ray cabinet irradiator dose, geometry, and calibration reporting is an ongoing process. Multi-tube designs have been introduced into the preclinical market and give a theoretical benefit but have not been widely assessed for use in preclinical irradiation conditions. The aim of this study was to report our experience commissioning a dual x-ray source cabinet irradiator (CIXD, Xstrahl Limited, United Kingdom) and assess the dose distribution for various experimental conditions...
June 2024: Advances in Radiation Oncology
https://read.qxmd.com/read/38699431/precise-healing-of-oral-and-maxillofacial-wounds-tissue-engineering-strategies-and-their-associated-mechanisms
#29
REVIEW
Qingtong Zhao, Changyun Leng, Manting Lau, Kawai Choi, Ruimin Wang, Yuyu Zeng, Taiying Chen, Canyu Zhang, Zejian Li
Precise healing of wounds in the oral and maxillofacial regions is usually achieved by targeting the entire healing process. The rich blood circulation in the oral and maxillofacial regions promotes the rapid healing of wounds through the action of various growth factors. Correspondingly, their tissue engineering can aid in preventing wound infections, accelerate angiogenesis, and enhance the proliferation and migration of tissue cells during wound healing. Recent years, have witnessed an increase in the number of researchers focusing on tissue engineering, particularly for precise wound healing...
2024: Frontiers in Bioengineering and Biotechnology
https://read.qxmd.com/read/38699269/ultrafast-photophysics-of-an-orange-red-thermally-activated-delayed-fluorescence-emitter-the-role-of-external-structural-restraint
#30
JOURNAL ARTICLE
Yixuan Gao, Yaxin Wang, Zilong Guo, Yan Wan, Zheng Xue, Yandong Han, Wensheng Yang, Xiaonan Ma
The application of thermally activated delay fluorescence (TADF) emitters in the orange-red regime usually suffers from the fast non-radiative decay of emissive singlet states ( k S NR ), leading to low emitting efficiency in corresponding organic light-emitting diode (OLED) devices. Although k S NR has been quantitatively described by energy gap law, how ultrafast molecular motions are associated with the k S NR of TADF emitters remains largely unknown, which limits the development of new strategies for improving the emitting efficiency of corresponding OLED devices...
May 1, 2024: Chemical Science
https://read.qxmd.com/read/38699250/singlet-fission-in-tips-anthracene-thin-films
#31
JOURNAL ARTICLE
Damon M de Clercq, Miles I Collins, Nicholas P Sloane, Jiale Feng, Dane R McCamey, Murad J Y Tayebjee, Michael P Nielsen, Timothy W Schmidt
Singlet fission is an exciton multiplication process that allows for the conversion of one singlet exciton into two triplet excitons. Organic semiconductors, such as acenes and their soluble bis(triisopropylsilylethynyl) (TIPS) substituted counterparts, have played a major role in elucidating the understanding of the underlying mechanisms of singlet fission. Despite this, one prominent member of the acene family that has received little experimental attention to date is TIPS-anthracene, even with computational studies suggesting potential high singlet fission yields in the solid state...
May 1, 2024: Chemical Science
https://read.qxmd.com/read/38698938/editorial-dynamics-at-surfaces-understanding-energy-dissipation-and-physicochemical-processes-at-the-atomic-and-molecular-level
#32
EDITORIAL
Anton Tamtögl, Helen Chadwick, Barbara A J Lechner, Marco Sacchi
No abstract text is available yet for this article.
2024: Frontiers in Chemistry
https://read.qxmd.com/read/38698921/bioinspired-super-hydrophilic-zwitterionic-polymer-armor-combats-thrombosis-and-infection-of-vascular-catheters
#33
JOURNAL ARTICLE
You Ke, Haotian Meng, Zeyu Du, Wentai Zhang, Qing Ma, Yuting Huang, Linxian Cui, Yifeng Lei, Zhilu Yang
Thrombosis and infection are two major complications associated with central venous catheters (CVCs), which significantly contribute to morbidity and mortality. Antifouling coating strategies currently represent an efficient approach for addressing such complications. However, existing antifouling coatings have limitations in terms of both duration and effectiveness. Herein, we propose a durable zwitterionic polymer armor for catheters. This armor is realized by pre-coating with a robust phenol-polyamine film inspired by insect sclerotization, followed by grafting of poly-2-methacryloyloxyethyl phosphorylcholine (pMPC) via in-situ radical polymerization...
July 2024: Bioactive Materials
https://read.qxmd.com/read/38698900/film-observation-and-the-mind
#34
JOURNAL ARTICLE
Bonnie Evans, Janet Harbord
This special issue considers the significance of film to the establishment and development of scientific approaches to the mind. Bonnie Evans explores how the origins of film technologies in 1895 in France encouraged a series of innovative collaborations, influencing both psychological theorisation, and new filming techniques. Jeremy Blatter explains how Harvard psychologist Hugo Münsterberg created early films specifically designed to engage audiences using psychological tactics. Scott Curtis' article examines how Yale psychologist Arnold Gesell was able to extract scientific data from a film...
April 2024: History of the Human Sciences
https://read.qxmd.com/read/38698899/mother-blaming-revisited-gender-cinematography-and-infant-research-in-the-heyday-of-psychoanalysis
#35
JOURNAL ARTICLE
Felix E Rietmann
This article examines cinematographic observational studies of infants conducted by a loosely connected group of female psychologists and physicians in the USA from the 1930s to the 1960s. Largely forgotten today, these practitioners realized detailed and carefully planned research projects about infant behavior in a variety of settings-from the laboratory to the well-baby clinic. Although their studies were in conversation with better-known works, such as John Bowlby's research on attachment and René Spitz's films on institutionalized infants, they differed in a close examination of individual characteristics of babies and a critical attitude toward contemporary notions of 'pathological mothering'...
April 2024: History of the Human Sciences
https://read.qxmd.com/read/38698898/the-visualization-of-autism-filming-children-at-the-maudsley-hospital-london-1957-8
#36
JOURNAL ARTICLE
Janet Harbord
This article examines three films made during the 1950s by Elwyn James Anthony at the psychotic clinic for children at the Maudsley Hospital that marked an important transition in the purpose and practice of visual documentation in a clinical setting: film as a research tool was transitioning from the recording of external signs as indicators of internal subjective states, to the capture of the visual flow of communication between subjects. It is a shift that had a particular impact on the emergent classification of autism, a modality not yet properly separated from the broader term of psychosis, as a non-relational condition whose visual capture demonstrated a void of inter-human communicational exchange...
April 2024: History of the Human Sciences
https://read.qxmd.com/read/38698897/the-origins-of-film-psychology-and-the-neurosciences
#37
JOURNAL ARTICLE
Bonnie Evans
The invention of film technologies in France at the end of the 19th century inspired neurologists and associated professionals to engage with this new medium to demonstrate their theories of the brain, the nervous system, and the mind. Beginning with the origins of cinema in Paris, this article explores how film technologies were used at La Salpêtrière, and beyond, to visualise internal mental processes, and to support the burgeoning sciences of the mind. This film-making became increasingly sophisticated by the late 1910s and early 1920s, creating innovative ways to present psychological experiences on film...
April 2024: History of the Human Sciences
https://read.qxmd.com/read/38698883/conductive-and-alignment-optimized-porous-fiber-conduits-with-electrical-stimulation-for-peripheral-nerve-regeneration
#38
JOURNAL ARTICLE
Kai Liu, Shuai Yan, Yao Liu, Jianfeng Liu, Ruijun Li, Lirong Zhao, Bin Liu
Autologous nerve transplantation (ANT) is currently considered the gold standard for treating long-distance peripheral nerve defects. However, several challenges associated with ANT, such as limited availability of donors, donor site injury, mismatched nerve diameters, and local neuroma formation, remain unresolved. To address these issues comprehensively, we have developed porous poly(lactic- co -glycolic acid) (PLGA) electrospinning fiber nerve guide conduits (NGCs) that are optimized in terms of alignment and conductive coating to facilitate peripheral nerve regeneration (PNR) under electrical stimulation (ES)...
June 2024: Materials today. Bio
https://read.qxmd.com/read/38698875/pedicle-ossification-after-fibular-flap-reconstruction-of-maxillary-defects-a-case-report-and-literature-review
#39
Bo Zou
KEY CLINICAL MESSAGE: The phenomenon of vessel pedicle ossification is a noteworthy aspect of the repair and reconstruction of maxillofacial defects. Imaging findings typically reveal high-density shadows within the vascular pedicle pathway, which may be managed through conservative observation or surgical intervention as deemed appropriate. ABSTRACT: Vessel pedicle ossification is a relatively uncommon complication associated with the reconstruction of oral and maxillofacial tissue defects using free tissue flap repair...
May 2024: Clinical Case Reports
https://read.qxmd.com/read/38698603/direct-electrodeposition-of-electrically-conducting-ni-3-hitp-2-mof-nanostructures-for-micro-supercapacitor-integration
#40
JOURNAL ARTICLE
Sepideh Behboudikhiavi, Géraldine Chanteux, Binson Babu, Sébastien Faniel, Florent Marlec, Kevin Robert, Delphine Magnin, Fabio Lucaccioni, Joel Ojonugwa Omale, Petru Apostol, Luc Piraux, Christophe Lethien, Alexandru Vlad
Micro-supercapacitors emerge as an important electrical energy storage technology expected to play a critical role in the large-scale deployment of autonomous microdevices for health, sensing, monitoring, and other IoT applications. Electrochemical double-layer capacitive storage requires a combination of high surface area and high electronic conductivity, with these being attained only in porous or nanostructured carbons, and recently found also in conducting metal-organic frameworks (MOFs). However, techniques for conformal deposition at micro- and nanoscale of these materials are complex, costly, and hard to upscale...
May 2, 2024: Small
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