bluuebunny/crossref_metadata_2025_split huggingface dataset:
Fabrication of Sawfish photonic crystal cavities in bulk diamond
Authors: Pregnolato Tommaso , Stucki Marco E. , Bopp Julian M. , v. d. Hoeven Maarten H. , Gokhale Alok , Krüger Olaf , Schröder Tim 
Published: March 2024

Color centers in diamonds are quantum systems with optically active spin-states that show long coherence times and are, therefore, a promising candidate for the development of efficient spin–photon interfaces. However, only a small portion of the emitted photons is generated by the coherent optical transition of the zero-phonon line (ZPL), which limits the overall performance of the system. Embedding these emitters in photonic crystal cavities improves the coupling to the ZPL photons and increases their emission rate. Here, we demonstrate the fabrication process of “Sawfish” cavities, a design recently proposed that has the experimentally realistic potential to simultaneously provide a high waveguide coupling efficiency and significantly enhance the emission rate. The presented process allows for the fabrication of fully suspended devices with a total length of 20.5 μm and feature sizes as small as 40 nm. The optical characterization shows fundamental mode resonances that follow the behavior expected from the corresponding design parameters and quality (Q) factors as high as (3800 ± 1200). Finally, we investigate the effects of nanofabrication on the devices and show that, despite a noticeable erosion of the fine features, the measured cavity resonances deviate by only 0.8 (1.2)% from the values estimated by simple inspection via scanning electron microscopy. This proves that the Sawfish design is robust against fabrication imperfections, which makes it an attractive choice for the development of quantum photonic networks.
Few-mode metal-free perovskite optical fiber with second-order optical nonlinearity
Authors: Tsui Hei Chit Leo , Sirbu Dumitru , Alsaif Naseem , Hill Nathan , Tizzard Graham , Docampo Pablo , Healy Noel 
Published: March 2024

Semiconductor core optical fibers are highly desirable for fiber-based photonic and optoelectronic applications as they can combine strong optical nonlinearities, tight light confinement, wide transmission bands, and electronic functionality within a single platform. Perovskites have emerged as particularly exciting materials for semiconductor photonics as they have strong optical nonlinearities and tunable optoelectronic bandgaps. However, lead-based perovskites contain toxic elements and are, therefore, not environmentally friendly. Furthermore, in fiber form, their core-size is prohibitively large, making them unsuitable for nonlinear optics and applications that require single-mode guidance, such as telecommunications. Here, we report a metal-free perovskite core optical fiber where lead has been substituted for an ammonium cation in the perovskite structure. The core material has a wide bandgap greater than 5 eV, a high laser damage threshold, and a core diameter that can be produced as small as 5 µm. At this core size, the fiber supports just six modes, and the fundamental mode can readily be excited and isolated. Moreover, the metal-free perovskite has a second-order susceptibility that is absent in the archetypal lead-based perovskites and many other semiconductor core materials, such as silicon and germanium. The second-order susceptibility is important for many nonlinear optics applications, such as second-harmonic generation and quantum optics.
A comparative study on the corrosion of pure titanium and titanium–12%zirconium alloy after different exposure periods of time in sodium chloride solution
Authors: Sherif El-Sayed M. 
Published: March 2024

In this work, the powder metallurgy technique was employed to manufacture pure titanium (Ti) and 88% titanium–12% zirconium (TiZr) alloy. The electrochemical corrosion investigations for pure Ti and the TiZr alloy were carried out after exposure for 30 min and 3 days in 3.5% NaCl solutions. The Nyquist and Bode plots obtained from the electrochemical impedance spectroscopy experiments revealed that the presence of Zr remarkably magnifies the corrosion resistance of Ti via increasing the impedance and degree of the phase angle, as well as the polarization and solution resistances. The potentiodynamic cyclic polarization measurements revealed that the presence of 12% Zr highly enhances the corrosion resistance of Ti. These polarization results showed that Zr addition reduces the corrosion of Ti via decreasing its corrosion rate. The intensity of the current when measured with increasing time of the experiment at −0.10 mV (Ag/AgCl) indicated that the addition of 12% Zr greatly decreases the absolute current, which indicates that alloying Zr within Ti reduces the severity of its corrosion in the chloride electrolyte. The morphology of the surfaces and the possible surface layer(s) for the corroded Ti and TiZr samples were analyzed using a scanning electron microscope and energy dispersive x rays. Results collectively depicted that the presence of Zr increases the corrosion resistance when alloyed with Ti.
The role of magnetic anisotropy in the magnetoresistance of Cr2O3/Al2O3 thin film antiferromagnets
Authors: Wisser Jacob J. , Xue Fen , Wang Shan X. , Suzuki Yuri 
Published: March 2024

The magnetic states of antiferromagnetic insulating thin films are a promising medium for information storage, but characterization of these states has proven to be challenging. One approach is via magnetotransport measurements in an adjacent heavy metal layer. To this end, we synthesized and characterized a series of Cr2O3 films and bilayers on Al2O3 substrates with three different orientations: m-plane, a-plane, and c-plane. X-ray diffraction results demonstrated orientation control of the Cr2O3 thin film, with m-plane films displaying a higher degree of mosaic spread than the a- and c-plane films. Reciprocal space maps showed that the films are mostly relaxed, although there was a small and different degree of strain in each orientation. The m-plane films were under 2% compressive strain, the a-plane film was under 0.5% compressive strain, and the c-plane film was completely relaxed to bulk values. To probe the magnetic state of the films, we measured the angular dependent magnetoresistance of Cr2O3/Pt bilayers for each orientation. We found a nontrivial temperature dependence of the sign of the magnetoresistance, pointing to the complex interplay between the exchange and anisotropy energies that vary with orientation. We propose that strain and mosaic spread may contribute to a difference in magnetic anisotropies among the samples and the resulting temperature dependence of the magnetoresistance. This work demonstrates the importance of considering the competition between antiferromagnetic exchange and magnetic anisotropy when storing information in the spin state of an antiferromagnetic insulator.
Simulation study on rotor speed of combined rotary separator in coal pneumatic conveying
Authors: Zhou Feng , Fan Chunyong , Zhang Qiang , Luan Hengxuan 
Published: March 2024

The separator is a key component of coal pneumatic conveying systems, which plays an important role in improving particle collection efficiency and reducing dust pollution. In this paper, a combined rotary separator was designed. Based on the traditional cyclone separator, the rotor blades were installed and matched with the guide vanes to increase the material separation and collection performance. The influence of rotor speed on the characteristics of the separator was studied by computational fluid dynamics simulation, and the flow field velocity and pressure distribution and the particle trajectory and separation degree were obtained. The results showed that the flow field tangential velocity plays a dominant role in the separation process and is approximately symmetrically distributed with the rotor axis as the center. The velocity of the flow field in the inner rotor is approximately positively correlated with the rotor speed, and the tangential velocity gradually decreases with the increase in the flow field height. The static pressure of the flow field is approximately axisymmetric along the rotor axis, and there is a pressure gradient from the outer separation cone to the rotor axis. The particles in the separator show a separation phenomenon based on the different sizes, and the change trend of the separation degree under different rotor speeds is similar. When the rotor speed is 160 rpm, the particles maintain the highest integrity. The rotor speed of 320 rpm has a protective effect on coarse particles above 1000 µm.
Phase structures and critical behavior of rational non-linear electrodynamics Anti de Sitter black holes in Rastall gravity
Authors: Sekhmani Yassine , Gogoi Dhruba Jyoti , Myrzakulov Ratbay , Rayimbaev Javlon 
Published: March 2024

Abstract
This research paper presents a black hole solution with a rational nonlinear electrodynamics source within the Rastall gravity framework. The paper analyzes the thermodynamic properties of the solution in normal phase space and explores its critical behavior. The phase structure is examined using the extended first law of thermodynamics, with the cosmological constant Λ serving as pressure P. The isotherms exhibit van der Waals behavior at small values of horizon r
+. The paper also investigates the Gibbs free energy behavior and finds two critical points with two pressures where the re-entrant phase transition occurs and disappears. We also explore the prevalent microstructure of black holes in Ruppeiner geometry, uncovering significant deviations in the nature of particle interactions from conventional practice. Moreover, the thermodynamic geometry is analyzed using the Ruppeiner formalism, with the normalized Ricci scalar indicating possible point-phase transitions of the heat capacity, and the normalized extrinsic curvature having the same sign as the normalized Ricci scalar. The three-phase transitions of the heat capacity are those that we find for the normalized Ruppeiner curvatures. Thus, there is an absolute correspondence.
Atomic vs. sub-atomic layer deposition: impact of growth rate on the optical and structural properties of MoS2 and WS2
Authors: Tessarek Christian , Grieb Tim , Krause Florian F , Petersen Christian , Karg Alexander , Hinz Alexander , Osterloh Niels , Habben Christian , Figge Stephan , Krisponeit Jon-Olaf , Schmidt Thomas , Falta Jens , Rosenauer Andreas , Eickhoff Martin 
Published: March 2024

Abstract
MoS2 and WS2 mono- and multilayers were grown on SiO2/Si substrates. Growth by atomic layer deposition (ALD) at fast growth rates is compared to sub-ALD, which is a slow growth rate process with only partial precursor surface coverage per cycle. A Raman spectroscopic analysis of the intensity and frequency difference of the modes reveals different stages of growth from partial to full surface layer coverage followed by layer-by-layer formation. The initial layer thickness and structural quality strongly depend on the growth rate and monolayers only form using sub-ALD. Optical activity is demonstrated by photoluminescence (PL) characterization which shows typical excitonic emission from MoS2 and WS2 monolayers. A chemical analysis confirming the stoichiometry of MoS2 is performed by x-ray photoelectron spectroscopy. The surface morphology of layers grown with different growth rates is studied by atomic force microscopy. Plan-view transmission electron microscopy analysis of MoS2 directly grown on freestanding graphene reveals the local crystalline quality of the layers, in agreement with Raman and PL results.
Optimization of Newtonian fluid pressure in microcantilever integrated flexible microfluidic channel for healthcare application
Authors: Saxena Ankur , Kumar Mahesh , Mishra Dhaneshwar , Singh Kulwant 
Published: March 2024

Abstract
The demand for microfluidic pressure sensors is ever-increasing in various industries due to their crucial role in controlling fluid pressure within microchannels. While syringe pump setups have been traditionally used to regulate fluid pressure in microfluidic devices, they often result in larger setups that increase the cost of the device. To address this challenge and miniaturize the syringe pump setup, the researcher introduced integrated T-microcantilever-based microfluidic devices. In these devices, microcantilevers are incorporated, and their deflections correlate with the microchannel’s pressure. When the relative pressure of fluid (plasma) changes, the T-microcantilever deflects, and the extent of this deflection provides information on fluid pressure within the microchannel. In this work, finite element method (FEM) based simulation was carried out to investigate the role of material, and geometric parameters of the cantilever, and the fluid viscosity on the pressure sensing capability of the T-microcantilever integrated microfluidic channel. The T-microcantilever achieves a maximum deflection of 127 μm at a 5000 μm/s velocity for Young’s modulus(E) of 360 kPa of PDMS by employing a hinged structure. On the other hand, a minimum deflection of 4.05 × 10−5
μm was attained at 5000 μm/s for Young’s modulus of 1 TPa for silicon. The maximum deflected angle of the T-cantilever is 20.46° for a 360 kPa Young’s modulus while the minimum deflection angle of the T-cantilever is measured at 13.77° for 900 KPa at a fluid velocity of 5000 μm s−1. The T-cantilever functions as a built-in microchannel that gauges the fluid pressure within the microchannel. The peak pressure, set at 8.86 Pa on the surface of the cantilever leads to a maximum deflection of 0.096 μm (approximately 1 μm) in the T-cantilever at a 1:1 velocity ratio. An optimized microfluidic device embedded with microchannels can optimize fluid pressure in a microchannel support cell separation.
Development of a cross-linkable, EDOT-based conjugated polymer for stable temperature sensors
Authors: Beaumont Catherine , Beaupré Patrick , Bouch Nolwenn Le , Leclerc Mario 
Published: March 2024

Abstract
We report the synthesis of a cross-linkable conjugated polymer for the fabrication of stable temperature sensors. This new water-processable polymer possesses a temperature coefficient of resistance of −1.66% °C−1 between −20 °C and 50 °C and presents a stable temperature dependence even at temperatures below the freezing point and with high humidity levels.
A physically based constitutive model considering dynamic recrystallization of ERNiCrMo-3 alloy
Authors: Yang Yan , Sun Zhiren , Miao Chengpeng , Fan Yu , Yang Sen , Wang Zekun , Wang Kaikun 
Published: March 2024

Abstract
ERNiCrMo-3 alloy is widely used in the welding of nickel-based alloys. This study investigated the hot deformation and discontinuous dynamic recrystallization (DRX) behavior of ERNiCrMo-3 alloy through hot compression tests at deformation temperatures ranging from 990 °C to 1170 °C and strain rates ranging from 0.01 to 10 s−1. Experimental results showed that under conditions of elevated temperatures and lower strain rates, discontinuous dynamic recrystallization was prone to occur upon reaching critical strain, and the distribution of carbide and nitride particles within the alloy matrix affects recrystallization nucleation and grain boundary migration. A two-stage constitutive model was established based on classical dislocation density theory and DRX kinetics. Comparison between predicted and experimental data demonstrated a strong agreement, highlighting the accuracy and utility of the proposed constitutive model.
A dual-band MIMO PIFA antenna with a printed rectangular open-ended ring for 5G/WLAN mobile terminal
Authors: Boufouss Rachida , Najid Abdellah 
Published: March 2024

Abstract
A dual-band 8 × 8 multiple-input-multiple-output (MIMO) PIFA antenna that operates in the sub-6 GHz spectrum for 5G and WLAN mobile terminals is presented. The eight elements of the MIMO antenna are formed by using an L-slotted PIFA antenna, an L-shaped parasitic element, and a 2D rectangular open-ended ring parasitic structure that is printed next to the L-shaped parasitic element. In this article, we first proposed an ultra-thick PIFA antenna element to work in the 3.4-3.8 GHz 5G band and the 5.15-5.85 GHz WLAN band, adopting a new method that can provide dual-band behavior with wide bandwidth. Then, the final antenna element is used to design an eight-port MIMO antenna system, and the results show good MIMO performance in terms of envelope correlation coefficient (ECC), diversity gain (DG), mean effective gain (MEG), and multiplexing efficiency (ME).
A New Traditionalism in the City
Authors: Robison Claire C 
Published: March 2024

Abstract
This chapter focuses on how Mumbai’s devotees navigate their religious lifestyles alongside other desires and commitments, grappling with becoming religious in a modern city. Tensions center on notions of ISKCON’s “ideal culture,” expressed in Bhaktivedanta’s writings and through their embodied transnational community. Resident guru Radhanath Swami is viewed as a representative of Indian culture, embodying Hindu traditionalism despite his Western roots. Meanwhile, some Indian aspirants find it difficult to embody ISKCON’s prescriptions on culture, as many urban spaces and activities are deemed too Western and not conducive to devotional life. I follow everyday conflicts, from debates about vegetarianism and wearing saris to negotiating non-binary gender identities amid temple norms, analyzing how notions of “Indian” and “Western” culture are both essentialized but also deterritorialized in these contexts. ISKCON’s elastic understanding of culture enables instances of remarkable social mobility but also produces tensions over how to live as a devotee in a contemporary Indian city.
Finding the balance between person-centred and treatment-centred discussions in advance care planning—a qualitative analysis of conversations within the MUTUAL (Multidisciplinary Timely Undertaken Advance Care Planning conversations) intervention using a narrative analysis
Authors: van Lummel Eline V T J , Ietswaard Larissa , Rigter Marloes , Tjan Dave H T , van Delden Johannes J M , Milota Megan 
Published: March 2024

Abstract

Introduction
Advance care planning (ACP) aims to create conditions for more person-centred care. We aimed to explore variations in person-centred care discussions and treatment-centred care discussions within ACP conversations in the Multidisciplinary Timely Undertaken Advance Care Planning (MUTUAL) intervention and how person-centred care discussions could be encouraged. The MUTUAL intervention consists of the following: (i) timely patient selection, (ii) the patient and healthcare professionals preparing for the conversation, (iii) a scripted ACP conversation in a multidisciplinary setting and (iv) documentation.

Methods
We conducted a narrative analysis of ACP conversations. A narrative summary template was created and used to analyse 18 audio-recordings.

Results
We noticed variations in person-centred and treatment-centred focus within the ACP conversations. We identified three important strategies that facilitated person-centred care discussions within ACP conversations. First, healthcare professionals’ acceptance that ACP is an individual process. We believe it is important that healthcare professionals recognise and accept where the patient is in his or her individual ACP process; not making decisions right away can also be part of a decisional process. Secondly, exploring the underlying motivation for treatment wishes can give insights into patient’s wishes, values and needs. Lastly, healthcare professionals who demonstrated an adaptive, curious and engaged attitude throughout the ACP process achieved more person-centred ACP conversations. This coincided with elaborating on the patient’s emotions, fears and worries.

Conclusion
Person-centred and treatment-centred focus varied within the ACP conversations in the MUTUAL intervention. Certain strategies by healthcare professionals facilitated a more person-centred focus.
Identification of critical industry skills in an industrial hygiene graduate training program
Authors: Moore Jillian , Brazile William J , Brazile Mollie , Zarestky Jill 
Published: March 2024

Abstract
Graduates of industrial hygiene training (IH) programs must be able to meet continuously evolving health and safety needs in a wide variety of occupational settings. Therefore, academic IH graduate programs must regularly evaluate their curricula and solicit input from industry professionals to make curricular changes that will better prepare their students for professional roles in industry. The purpose of this study was to identify the training gaps that existed between industry needs and the current curriculum for a United States-accredited IH graduate training program. The research team facilitated two group interviews with the IH program advisory board, collected alumni survey data, and performed a qualitative analysis to identify skills gaps/needs for the IH Program graduates. The research team identified 3 themes from participant interviews and alumni surveys (technical, applied, and essential skills) and selected several skills within each theme that interview participants thought were necessary proficiencies for junior IH professionals. The skills identified in the qualitative interview and survey data can be incorporated into the curriculum to improve the training of IH graduate students. Additionally, by using qualitative analysis, the researchers uncovered essential skills previously unidentified in IH needs assessments, providing valuable information for all IH graduate programs.
Rhinoplasty Outcomes in Patients With Symptoms of Body Dysmorphia
Authors: Losorelli Steven , Kimura Kyle S , Wei Eric X , Abdelhamid Ahmed S , El Abany Ahmed , Green Allen , Karki Sabin , Stephanian Brooke A , Kandathil Cherian K , Most Sam P 
Published: March 2024

Abstract

Background
Patients with symptoms of body dysmorphia often seek consultation for aesthetic rhinoplasty. While body dysmorphic disorder is a formal psychiatric diagnosis, recent evidence indicates that patients with symptoms of this condition who seek rhinoplasty may experience increased satisfaction with their appearance following surgery.

Objectives
To determine the psychological impact of rhinoplasty in patients screened preoperatively and postoperatively with a body dysmorphia screening questionnaire.

Methods
Retrospective chart review was performed of patients who underwent aesthetic and/or functional rhinoplasty by a single surgeon from June 2021 to April 2023. Adult patients with a complete preoperative and postoperative Body Dysmorphic Disorder–Aesthetic Surgery questionnaire (BDDQ-AS), Standardized Cosmesis and Health Nasal Outcomes Survey–Obstruction and Cosmesis (SCHNOS), and visual analog scale (VAS) were included. Patient characteristics and outcomes were analyzed, stratifying by BDDQ-AS screen.

Results
One-hundred fifteen patients (88% female) met criteria for inclusion. There was an 83% resolution rate of BDDQ-AS positive screening following rhinoplasty. Positive BDDQ-AS screening status preoperatively and postoperatively correlated with worse aesthetic satisfaction (all P &lt; .002). No patient-reported outcome measures were indicative of which patients with a BDDQ-AS positive screen preoperatively would experience “resolution” postoperatively.

Conclusions
Body dysmorphia screening resolution following surgical intervention correlated with improved patient aesthetic satisfaction, pointing to a potential positive psychological impact of undergoing rhinoplasty.

Level of Evidence: 3