jablonkagroup/rise_ai_scientists huggingface dataset:
Authors: May Copsey | Samantha Apps | James Moore | Ellis Crawford | Jingtao Huang | Esther Johnston | Sophie Orchard | Richard Thompson | Amy Welch | Karina Webster | David Bishop | Andrew Cooper | Vincent Artero | Luis Campos | Michelle Chang | Lin Chen | Serena Debeer | Franois Gabba | Subi George | Jinlong Gong | Stephen Goldup | Christopher Hunter | Tanja Junkers | Maja Khn | Gabriel Merino | Cinvestav Merida | James Mccusker | Thomas Meade | Paolo Melchiorre | Carsten Schultz | Dmitri Talapin | Andrei Yudin | Dave Adams | Ulf-Peter Apfel | Polly Arnold | Jennifer Brodbelt | Christopher Chang | R Cooks | Christopher Cummins | Ben Feringa | Elizabeth Gibson | Ryan Gilmour | Hubert Girault | Frank Glorius | Wwu Mnster | Leticia Gonzlez | Vicki Grassian | Alexis Grimaud | Buxing Han | Chen-Hsu Yu | Jonathan Sczepanski | Zhang Liu | Javier Navas | Wei Han | * Manuel | Ricardo Ibarra | Joseph Kai | Cho Kwan | King Lun Yeung ; Benjamin | Pierre-Thomas Ourri | Emeric Skowron | Titouan Jeamet | Christian Chetot | Ana Duchamp | Nicolas Belenguer | Olivier Vanthuyne | Elise Cala | Pradeep Dumont | Ivan Mandal | Florent Huc | Laurent Perret | * Vial | Julien Leclaire | ; Oliver | D Coleman | Jessica Macdonald | Ben Thomson | Jennifer Ward | Christopher Stubbs | Tom Mcallister | Shane Clark | Siddique Amin | Yimang Cao | Martine Abboud | Yijia Zhang | Hitesh Sanganee | V Kilian | Tim Huber | * Claridge | Akane Kawamura | ; Javier Mateos | Albert Moyano | Xavier Company | ; Peter | R Spackman | Alvin Walisinghe | Michael Anderson | Julian D ; Zhenhua Zhu | L o | La Droitte
Source: Chemical Science (article, 2023-01-01)
Field: Chemistry — Organic Chemistry

Contents list This article is Open Access All publication charges for this article have been paid for by the Royal Society of Chemistry Library science ; Chemistry ; World Wide Web ; Computer science Synthesis and Properties of Aromatic Compounds ; Inorganic and Organometallic Chemistry
Authors: Mohammed Sayyad | Ying Qin | Jan Kopaczek | Adway Gupta | Naim Patoary | Shantanu Sinha | Emmie Benard | Austin Davis | Kentaro Yumigeta | Cheng-Lun Wu | Han Li | Shize Yang | Ivan Sanchez Esqueda | Arunima K. Singh | Sefaattin Tongay
Source: arXiv (Cornell University) (preprint, 2023-05-31)
Field: Materials Science — Materials Chemistry

Strain Anisotropy Driven Spontaneous Formation of Nanoscrolls from Two-Dimensional Janus Layers Two-dimensional Janus transition metal dichalcogenides (TMDs) have attracted attention due to their emergent properties arising from broken mirror symmetry and self-driven polarisation fields. While it has been proposed that their vdW superlattices hold the key to achieving superior properties in piezoelectricity and photovoltiacs, available synthesis has ultimately limited their realisation. Here, we report the first packed vdW nanoscrolls made from Janus TMDs through a simple one-drop solution technique. Our results, including ab-initio simulations, show that the Bohr radius difference between the top sulphur and the bottom selenium atoms within Janus M_Se^S (M=Mo, W) results in a permanent compressive surface strain that acts as a nanoscroll formation catalyst after small liquid interaction. Unlike classical 2D layers, the surface strain in Janus TMDs can be engineered from compressive to tensile by placing larger Bohr radius atoms on top (M_S^Se) to yield inverted C scrolls. Detailed microscopy studies offer the first insights into their morphology and readily formed Moiré lattices. In contrast, spectroscopy and FETs studies establish their excitonic and device properties and highlight significant differences compared to 2D flat Janus TMDs. These results introduce the first polar Janus TMD nanoscrolls and introduce inherent strain-driven scrolling dynamics as a catalyst to create superlattices. Janus ; Materials science ; Nanotechnology ; Janus particles ; Bohr radius ; Superlattice ; Chemical physics ; Condensed matter physics ; Optoelectronics ; Chemistry ; Physics ; Quantum dot 2D Materials and Applications ; Quantum Dots Synthesis And Properties ; Supramolecular Self-Assembly in Materials
Authors: Myneedi Jayanth | Jangde Srivardhan | Shivasai Gadebatla | Badapatla Amarender | Kiran kumar Ayyagari
Source: International Journal of Science and Research Archive (article, 2023-06-30)
Field: Materials Science — Materials Chemistry

Fabrication of a portable refrigerator using thermoelectric Peltier module Refrigeration expending thermoelectric cooling methods have been in research for the past few decades due to its recompenses paralleled to a vapor-compression refrigerators its lack of moving parts or circulating fluid, invulnerability to leaks, small size, and flexible shape. Likewise, portable refrigerators filled with refrigerants are a big hassle to carry around along with being dangerous. This portable mini refrigerator will be capable of cooling a soft-drink canister or multiple 200 ml bottles at its prototype size and based on the results, something finer can be constructed. This attempt of us at fabricating aneco-friendly refrigerator without having to deal with the prospects of handling a dangerous refrigerant is quite affordable when mass-produced and can be installed in glove compartments of a car or a separate refrigeration compartment can be installed in a vehicle. Furthermore, these can be put into use in organizations by individuals as often as possible. Refrigerator car ; Refrigeration ; Refrigerant ; Vapor-compression refrigeration ; Thermoelectric cooling ; Thermoelectric effect ; Environmental science ; Mechanical engineering ; Process engineering ; Automotive engineering ; Engineering ; Heat exchanger ; Thermodynamics ; Physics Advanced Thermoelectric Materials and Devices
Authors: Badran Salim | Bilal Alsalam | Mohammed Al Rifaie
Source:  (preprint, 2023-06-19)
Field: Materials Science — Materials Chemistry

AN EXPERIMENTAL INVESTIGATION OF A PORTABLE SOLAR THERMOELECTRIC FRIDGE FOR STORING SOME VACCINES An experiment was conducted to determine the performance of a portable thermoelectric fridge used for storing some vaccines powered by a solar panel. The inner size of the cooler box tested was 240 mm × 240 mm × 170 mm with 8kg net weight of the fridge and it can accommodate 9.8 liters of medical supplies. A thermoelectric module ESUMIC DC 12V was used in the test. The thermoelectric hot side was cooled by using air, meanwhile, the cold side of the thermoelectric was connected to the inner heat sink to absorb heat inside the cooler box. The thermoelectric was powered by a portable solar panel and battery directly to each thermoelectric which had a power of 100 WP. The battery controls and maintains the system’s voltage while it is being charged by the portable solar panel. It also supports and supplies the system with enough power. The cooler container was tested for one hour of daylight on 16 April, 21 May, 10 June, and 10 July respectively in 2021. The results showed that the lowest temperature on the thermoelectric cold side and center of the fridge was around 1.5°C and 8.6°C after one hour of working time. The experimental COP obtained were ranging from 0.12 to 0.71. Moreover, solar panels were the potential as power sources for thermoelectric cooling systems. Thermoelectric cooling ; Thermoelectric effect ; Thermoelectric generator ; Battery (electricity) ; Heat sink ; Environmental science ; Materials science ; Nuclear engineering ; Electrical engineering ; Voltage ; Automotive engineering ; Optoelectronics ; Power (physics) ; Engineering ; Physics ; Thermodynamics Advanced Thermoelectric Materials and Devices ; Environmental Education and Sustainability ; Advanced Thermodynamics and Statistical Mechanics
Authors: Ms. Priyanka Lamba | Prof. . M.K.Nair
Source: International Journal of Engineering Technology and Management Sciences (article, 2023-01-01)
Field: Materials Science — Polymers and Plastics

An assessment of comfortable sports Shoe in terms of MD [material + design] factors The objective of this study was to identify the comfortable sports shoes which are available with the participants and investigate the reasons for the comfortable sports shoes. Forty-five Delhi-national capital region Indian youth males participated in the study. A one-on-one discussion was conducted to fill the experience survey questionnaire. The questionnaire consists of two parts. First part consists of demographic details and second part includes the choice factors, but the comfortable factors [choice F1-F9] was mentioned by the participants and even scaled by them on the five point likert scale. Their sports shoe was found most comfortable and least comfortable mainly on the basis of utilitarian experience. The good comfortable shoes have the qualities like good material (M) and nicely designed (D).i.e. MD factors. Likert scale ; Applied psychology ; Psychology ; Scale (ratio) ; Engineering ; Geography ; Cartography Textile materials and evaluations ; Lower Extremity Biomechanics and Pathologies ; Diversity and Impact of Dance
Authors: A. A. Al-Owais | Ibrahim S. El-Hallag | E.H. El‐Mossalamy
Source: Macedonian Journal of Chemistry and Chemical Engineering (article, 2023-06-29)
Field: Chemistry — Electrochemistry

Quantitative determination of hydroquinone via electrochemical methods at nano-architecture platinum electrode Hydroquinone (HQ) was electrochemically measured using convolutive cyclic voltammetry and differential pulse voltammetry (DPV) on a nano-architecture mesoporous platinum film electrochemically grown from a hexagonal liquid crystalline template of C16EO8 surfactant in 1.0 mol/l HClO4. The HQ cyclic voltammograms produced one oxidative peak in the forward sweep of potential and one reductive peak in the reverse sweep. The effect of HQ concentration was investigated using the different electrochemical methods mentioned above. The modified platinum electrode exhibits good sensitivity for the determination of the HQ compound in 1.0 mol/l HClO4. The best executive was found for the i-t curve method developed from cyclic voltammetry of HQ. It exhibits a linear peak current response over the concentration range of 8 to 55 µmol/l, with a detection limit of 0.5726 µmol/l and a quantification limit of 1.9088 µmol/l, confirming the accuracy and sensitivity of this quick, cheap, and easy method. Hydroquinone ; Cyclic voltammetry ; Detection limit ; Differential pulse voltammetry ; Platinum ; Electrochemistry ; Analytical Chemistry (journal) ; Electrode ; Materials science ; Linear sweep voltammetry ; Voltammetry ; Chemistry ; Physical chemistry ; Chromatography ; Organic chemistry ; Catalysis Electrochemical Analysis and Applications ; Analytical Chemistry and Sensors ; Conducting polymers and applications
Authors: Amir Porat | Arman Tekinalp | Yashraj Bhosale | Mattia Gazzola | Yasmine Meroz
Source: bioRxiv (Cold Spring Harbor Laboratory) (preprint, 2023-05-19)
Field: Materials Science — Biomaterials

On the mechanical origins of waving, coiling and skewing in <i>Arabidopsis thaliana</i> roots By masterfully balancing directed growth and passive mechanics, plant roots are remarkably capable of navigating complex heterogeneous environments to find resources. Here we present a theoretical and numerical framework which allows us to interrogate and simulate the mechanical impact of solid interfaces on the growth pattern of plant organs. We focus on the well-known waving, coiling and skewing patterns exhibited by roots of Arabidopsis thaliana when grown on inclined surfaces, serving as a minimal model of the intricate interplay with solid substrates. By modelling growing slender organs as Cosserat rods that mechanically interact with the environment, our simulations verify hypotheses of waving and coiling arising from the combination of active gravitropism and passive root-plane responses. Skewing is instead related to intrinsic twist due to cell file rotation. Numerical investigations are outfitted with an analytical framework that consistently relates transitions between straight, waving, coiling and skewing patterns with substrate tilt angle. Simulations are found to corroborate theory and recapitulate a host of reported experimental observations, thus providing a systematic approach for studying in silico plant organs behavior in relation to their environment. Significance Plant roots exhibit an exceptional ability to navigate in heterogeneous soil environments while overcoming obstacles. Our study combines theory and experimental observations to interrogate and simulate the mechanical impact of obstacles on organ growth. As a test case we focus on well-known observations of waving, coiling and skewing growth patterns of Arabidopsis thaliana roots grown on inclined substrates. Overall, our study explains a broad set of experimental observations through the minimal ingredients of gravitropism and passive mechanics. Our numerical framework provides an in silico laboratory, yielding quantitative insight into the dynamics of growing organs at the intersection of active processes and passive mechanics, applicable beyond plants to any slender growing system, from neurons or fungal hyphae to novel soft robots. Arabidopsis thaliana ; Botany ; Biology ; Gene ; Genetics Diatoms and Algae Research ; Coral and Marine Ecosystems Studies ; Advanced Materials and Mechanics
Authors: Yang Gao | Phil S. Baran
Source: Angewandte Chemie (article, 2023-11-08)
Field: Chemistry — Organic Chemistry

Nickel‐Catalyzed Enantioselective Decarboxylative Acylation: Rapid, Modular Access to α‐Amino Ketones** Abstract A new approach to the enantiocontrolled synthesis of α‐amino ketone derivatives is disclosed by employing a decarboxylative acylation strategy. Thus, when an acyl chloride and an α‐amido‐containing redox‐active ester are exposed to a nickel catalyst, chiral ligand, and metal reductant, α‐amido ketones are produced in good yield and high ee. The reaction exhibits broad substrate scope, can be easily scaled up, and is applied to dramatically simplify the synthesis of several known structures. Acylation ; Chemistry ; Ketone ; Enantioselective synthesis ; Ligand (biochemistry) ; Catalysis ; Nickel ; Yield (engineering) ; Combinatorial chemistry ; Substrate (aquarium) ; Organic chemistry ; Redox ; Materials science ; Receptor Catalytic C–H Functionalization Methods ; Asymmetric Hydrogenation and Catalysis ; Synthetic Organic Chemistry Methods
Authors: Areej Yassin | Amira Soliman | Naglaa Abd Al-Fattah
Source: Bulletin of the National Nutrition Institute of the Arab Republic of Egypt (article, 2023-03-01)
Field: Chemistry — Organic Chemistry

Improvement of Physicochemical Properties of Light-Exposed Linseed Oil by Blending with Nanoparticles It's interesting to learn that silver nanoparticles (Ag NPs) not only have an antibacterial effect but also provide a good level of safety in fields where people eat and touch things. It has received food and drug administration (FDA) certification in the United States and is nontoxic, odorless, and harmless. Future possibilities for these nanomaterials offer a variety of opportunities for the creation of novel goods and uses in the food system. Linseed oil may have a longer shelf life if Ag NPs are added as preservatives in different doses. The sample was examined by transmission electron microscopy and UV spectroscopy after being pyrolyzed into Ag NPs in oleic acid. Through storage times, assessments of rancidity and microbiological characteristics were conducted. The findings demonstrated that while shelf life rises compared with the control sample, Ag NPs decrease total bacterial count and chemical properties, except iodine value. This technique can completely alter how food is produced. The prospects for these nanomaterials offer numerous opportunities for the creation of novel goods and uses in the food chain. Linseed oil ; Nanoparticle ; Materials science ; Chemical engineering ; Composite material ; Chemistry ; Nanotechnology ; Food science ; Engineering Edible Oils Quality and Analysis
Authors: Le Doan Duy | My Hanh Nguyen Thi | Nguyen Le Thai
Source: Indonesian Journal of Electrical Engineering and Computer Science (article, 2023-08-29)
Field: Materials Science — Materials Chemistry

Using (Ba,Ca)ScO2F:Bi3+,K+ phosphor with great performance and strong heating stability for LED backlight screens diodes emit illumination (LED) display study is focused on straitband green phosphor samples yielding significant effectiveness as well as heating consistency. The cation substitution design technique was used to create Ba1-xCaxScO2F:0.001Bi3+,0.001K+ with x of 0-0.12) perovskite phosphors that emit strait green illumination when activated by a 415 nm chip. The impact of Ca2+ replacement for Ba2+ in the crystal structures of Ba1- xCaxScO2F:0.001- Bi3+,0.001K+ and photoluminescence characteristics were examined. In the space group Pm3m, all of the phosphors have a cubic perovskite-type structure. The development of cell characteristics and the lengthiness of the Ba/ Ca/K/Bi-O bonds were studied. Beneath 415 nm chip stimulation, the phosphors with an interior quantum effectiveness of 77.4 percent produce strong green radiation reaching the peak at 510 nm. The increase of luminous effectiveness and heating steadiness in response to local structural change was thoroughly addressed. The cation substitution design technique discussed here might be a significant way to realizing spectrum modulation by regulating the micro-surrounding within the latticework to achieve outstanding LED backlighting screens. Phosphor ; Backlight ; Materials science ; Luminous efficacy ; Optoelectronics ; Photoluminescence ; Light-emitting diode ; Diode ; Perovskite (structure) ; Liquid-crystal display ; Optics ; Nanotechnology ; Chemistry ; Crystallography ; Layer (electronics) ; Physics Luminescence Properties of Advanced Materials ; Perovskite Materials and Applications ; Gas Sensing Nanomaterials and Sensors
Authors: Pritha Dolai | Aditya Singh Rajput | K. Vijay Kumar
Source: arXiv (Cornell University) (preprint, 2023-12-12)
Field: Materials Science — Materials Chemistry

Shape-dependent motility of polar inclusions in active baths Collections of persistently moving active particles are an example of a nonequilibrium heat bath. One way to study the nature of nonequilibrium fluctuations in such systems is to follow the dynamics of an embedded probe particle. With this aim, we study the dynamics of an anisotropic inclusion embedded in a bath of active particles. By studying various statistical correlation functions of the dynamics, we show that the emergent motility of this inclusion depends on its shape as well as the properties of the active bath. We demonstrate that both the decorrelation time of the net force on the inclusion and the dwell time of bath particles in a geometrical trap on the inclusion have a non-monotonic dependence on its shape. We also find that the motility of the inclusion is optimal when the volume fraction of the active bath is close to the value for the onset of motility induced phase separation. Non-equilibrium thermodynamics ; Physics ; Polar ; Dwell time ; Motility ; Inclusion (mineral) ; Anisotropy ; Dynamics (music) ; Particle (ecology) ; Thermodynamics ; Optics ; Quantum mechanics ; Biology Pickering emulsions and particle stabilization ; Micro and Nano Robotics ; Advanced Thermodynamics and Statistical Mechanics
Authors: Haiyan Wang | Yao Lu | Gan Tian
Source: Research Square (preprint, 2023-07-12)
Field: Materials Science — Materials Chemistry

Study on wear mechanism of milling cutter and hole-making quality in ball helical milling process Materials science ; Ball (mathematics) ; End mill ; Tool wear ; Machining ; Carbide ; Metallurgy ; Mechanism (biology) ; Ball mill ; End milling ; Process (computing) ; Mechanical engineering ; Alloy ; Titanium alloy ; Drilling ; Cemented carbide ; Engineering ; Computer science ; Geometry Metal Alloys Wear and Properties ; Metallurgy and Material Forming ; Advanced machining processes and optimization
Authors: Seongjoo Jung | Cristina Pizzolitto | Pierdomenico Biasi | Paul J. Dauenhauer | Turan Birol
Source: ChemRxiv (preprint, 2023-02-28)
Field: Materials Science — Materials Chemistry

Programmable Catalysis by Support Polarization: Elucidating and Breaking Scaling Relations The Sabatier principle and the scaling relations have been widely used to search for and screen new catalysts in the field of catalysis. However, these powerful tools can also serve as limitations of catalyst control and breakthrough. To overcome this challenge, this work proposes an efficient method of studying catalyst control by support polarization from first-principles. The results demonstrate that the properties of catalysts are determined by support polarization, irrespective of the magnitude of spontaneous polarization of support. The approach enables elucidating the scaling relations between binding energies at various polarization values of support. Moreover, we observe the breakdown of scaling relations for the surface controlled by support polarization, without requiring ensemble modification. By studying the surface electronic structure and decomposing the induced charge into contributions from different atoms and orbitals, we identify the inherent structural property of the interface that leads to the breaking of the scaling relations. Specifically, the displacements of the underlying oxide support impose its symmetry on the catalyst, causing the scaling relations between different adsorption sites to break. Scaling ; Polarization (electrochemistry) ; Catalysis ; Atomic orbital ; Chemical physics ; Materials science ; Linear scale ; Physics ; Chemistry ; Statistical physics ; Quantum mechanics ; Electron ; Mathematics ; Physical chemistry ; Geometry Machine Learning in Materials Science ; Catalytic Processes in Materials Science ; Electronic and Structural Properties of Oxides