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Journal articles on the topic 'Leaf fluttering'

Author: Grafiati

Published: 5 June 2025

Last updated: 16 July 2025

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1

Wang, Yunfei, Weidong Jia, Shiqun Dai, et al. "Analytical Methods for Wind-Driven Dynamic Behavior of Pear Leaves (Pyrus pyrifolia)." Agriculture 15, no. 8 (2025): 886. https://doi.org/10.3390/agriculture15080886.

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The fluttering of leaves under wind fields significantly impacts the efficiency and precision of agricultural spraying. However, existing spraying technologies often overlook the complex mechanisms of wind–leaf interactions. This study integrates the fine-tuned Segment Anything Model 2 with multi-dimensional dynamic behavior analysis to provide a systematic approach for investigating leaf fluttering under wind fields. First, a segmentation algorithm based on Principal Component Analysis was employed to eliminate background interference in leaf fluttering data. The results showed that the segme

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HASEBA, Tetsuya, Daijiro ITO, Hiroto ISHIDA, Kazuno OHNO, and Chiemi TAKAHASHI. "Boundary-Layer Transfer Coefficient for a Fluttering Leaf." Journal of Agricultural Meteorology 41, no. 4 (1986): 311–19. http://dx.doi.org/10.2480/agrmet.41.311.

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HASEBA, Tetsuya, Daijiro ITO, and Atsushi NISHIKAWA. "Boundary-layer transfer coefficient for a fluttering leaf. II. Model experiments to evaluate effects of leaf inclination and fluttering on transfer coefficient." Journal of Agricultural Meteorology 43, no. 2 (1987): 105–11. http://dx.doi.org/10.2480/agrmet.43.105.

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Brown, Brian, and Wendy Porras. "Extravagant female sexual display in a Megaselia Rondani species (Diptera: Phoridae)." Biodiversity Data Journal 3 (March 6, 2015): e4368. https://doi.org/10.3897/BDJ.3.e4368.

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The behavior of females of a species of <i>Megaselia</i> is described. Females perch on leaves and occasionally "dance", fluttering their wings while rapidly running on the leaf surface. During this dance, they evert bright white abdominal sacs that apparently constitute part of a visual display to attract males. The evolutionary basis of these behaviors is discussed.

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Derr, Julien, Renaud Bastien, Étienne Couturier, and Stéphane Douady. "Fluttering of growing leaves as a way to reach flatness: experimental evidence on Persea americana." Journal of The Royal Society Interface 15, no. 138 (2018): 20170595. http://dx.doi.org/10.1098/rsif.2017.0595.

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Simple leaves show unexpected growth motions: the midrib of the leaves swings periodically in association with buckling events of the leaf blade, giving the impression that the leaves are fluttering. The quantitative kinematic analysis of this motion provides information about the respective growth between the main vein and the lamina. Our three-dimensional reconstruction of an avocado tree leaf shows that the conductor of the motion is the midrib, presenting continuous oscillations and inducing buckling events on the blade. The variations in the folding angle of the leaf show that the lamina

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Byun, Junghwan, Minjo Park, Sang-Min Baek, et al. "Underwater maneuvering of robotic sheets through buoyancy-mediated active flutter." Science Robotics 6, no. 53 (2021): eabe0637. http://dx.doi.org/10.1126/scirobotics.abe0637.

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Falling leaves flutter from side to side due to passive and intrinsic fluid-body coupling. Exploiting the dynamics of passive fluttering could lead to fresh perspectives for the locomotion and manipulation of thin, planar objects in fluid environments. Here, we show that the time-varying density distribution within a thin, planar body effectively elicits minimal momentum control to reorient the principal flutter axis and propel itself via directional fluttery motions. We validated the principle by developing a swimming leaf with a soft skin that can modulate local buoyancy distributions for ac

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Moulia, Bruno, Stéphane Douady, and Olivier Hamant. "Fluctuations shape plants through proprioception." Science 372, no. 6540 (2021): eabc6868. http://dx.doi.org/10.1126/science.abc6868.

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Plants constantly experience fluctuating internal and external mechanical cues, ranging from nanoscale deformation of wall components, cell growth variability, nutating stems, and fluttering leaves to stem flexion under tree weight and wind drag. Developing plants use such fluctuations to monitor and channel their own shape and growth through a form of proprioception. Fluctuations in mechanical cues may also be actively enhanced, producing oscillating behaviors in tissues. For example, proprioception through leaf nastic movements may promote organ flattening. We propose that fluctuation-enhanc

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Martin, Daniel, Vijay Singh, Mohamed A. Latheef, and Muthukumar Bagavathiannan. "Spray Deposition on Weeds (Palmer Amaranth and Morningglory) from a Remotely Piloted Aerial Application System and Backpack Sprayer." Drones 4, no. 3 (2020): 59. http://dx.doi.org/10.3390/drones4030059.

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This study was designed to determine whether a remotely piloted aerial application system (RPAAS) could be used in lieu of a backpack sprayer for post-emergence herbicide application. Consequent to this objective, a spray mixture of tap water and fluorescent dye was applied on Palmer amaranth and ivyleaf morningglory using an RPAAS at 18.7 and 37.4 L·ha−1 and a CO2-pressurized backpack sprayer at a 140 L·ha−1 spray application rate. Spray efficiency (the proportion of applied spray collected on an artificial sampler) for the RPAAS treatments was comparable to that for the backpack sprayer. Flu

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You, Cheng-Shu, Ming-Jyh Chern, Dedy Zulhidayat Noor, and Tzyy-Leng Horng. "Numerical Investigation of Freely Falling Objects Using Direct-Forcing Immersed Boundary Method." Mathematics 8, no. 9 (2020): 1619. http://dx.doi.org/10.3390/math8091619.

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The fluid-structure interaction of solid objects freely falling in a Newtonian fluid was investigated numerically by direct-forcing immersed boundary (DFIB) method. The Navier–Stokes equations are coupled with equations of motion through virtual force to describe the motion of solid objects. Here, we rigorously derived the equations of motion by taking control-volume integration of momentum equation. The method was validated by a popular numerical test example describing the 2D flow caused by the free fall of a circular disk inside a tank of fluid, as well as 3D experimental measurements in th

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Wang, Le, Lirong Xiang, Lie Tang, and Huanyu Jiang. "A Convolutional Neural Network-Based Method for Corn Stand Counting in the Field." Sensors 21, no. 2 (2021): 507. http://dx.doi.org/10.3390/s21020507.

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Accurate corn stand count in the field at early season is of great interest to corn breeders and plant geneticists. However, the commonly used manual counting method is time consuming, laborious, and prone to error. Nowadays, unmanned aerial vehicles (UAV) tend to be a popular base for plant-image-collecting platforms. However, detecting corn stands in the field is a challenging task, primarily because of camera motion, leaf fluttering caused by wind, shadows of plants caused by direct sunlight, and the complex soil background. As for the UAV system, there are mainly two limitations for early

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Tay, Jessica Y. L., Gerhard Zotz, Jaroslaw Puczylowski, and Helena J. R. Einzmann. "Go with the flow: The extent of drag reduction as epiphytic bromeliads reorient in wind." PLOS ONE 16, no. 6 (2021): e0252790. http://dx.doi.org/10.1371/journal.pone.0252790.

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Vascular epiphytes represent almost 10% of all terrestrial plant diversity. Being structurally dependent on trees, epiphytes live at the interface of vegetation and atmosphere, making them susceptible to atmospheric changes. Despite the extensive research on vascular epiphytes, little is known about wind disturbance on these plants. Therefore, this study investigated the wind-epiphyte mechanical interactions by quantifying the drag forces on epiphytic bromeliads when subjected to increasing wind speeds (5–22 m s-1) in a wind tunnel. Drag coefficients (Cd) and Vogel exponents (B) were calculate

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12

K., Anandhan, Ajay Shanker Singh, and Thirunavukkarasu K. "An Automatic Rice Plant Disease Detection Model Built With Unstructured Data Using IMDT Tiling and CNN Cognitive Object Detection." International Journal on Recent and Innovation Trends in Computing and Communication 10, no. 12 (2022): 65–75. http://dx.doi.org/10.17762/ijritcc.v10i12.5887.

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Nowadays agriculture and processes are getting more intelligent mechanisms to improve the yield and reduce manual work. Smart agriculture provides numerous modern ideologies to farmers. But still, farmers face one important issue crop disease. Many researchers provide plenty of ways to recover and tackle the situation to come out of this problem. Therefore, they proceed with image processing to identify diseases from rice plant images. Farmers mainly face problems to take proper images for classification. Because of various reasons like various environmental factors, farmers ignorance, field s

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13

Fabian, Meder Serena Armiento Giovanna Adele Naselli Marc Thielen Thomas Speck Barbara Mazzolai. "Biohybrid generators based on living plants and artificial leaves: influence of leaf motion and real wind outdoor energy harvesting." Bioinspiration & Biomimetics 16, no. 5 (2023): 055009. https://doi.org/10.1088/1748-3190/ac1711.

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14

Inoue, Makoto, Takashi Koto, and Akito Hirakata. "Large Amplitude Iris Fluttering Detected by Consecutive Anterior Segment Optical Coherence Tomography Images in Eyes with Intrascleral Fixation of an Intraocular Lens." Journal of Clinical Medicine 11, no. 15 (2022): 4596. http://dx.doi.org/10.3390/jcm11154596.

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Saccadic eye movements induce movements of the aqueous and vitreous humor and iris fluttering. To evaluate iris fluttering during eye movements, anterior segment optical coherence tomography (AS-OCT) was used in 29 eyes with pars plana vitrectomy (PPV) and intrascleral fixation of an intraocular lens (ISF group) and 15 eyes with PPV and an IOL implantation into lens capsular bag (control group). The height of the iris from the iris plane (the line between the anterior chamber angles) was compared every 0.2 s after the eye had moved from a temporal to the primary position (time 0). The height o

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15

Zhou, Jingyuan, Yinkui Wu, Lu Chen, Tao Li, Yan Xiong, and Yu Chen. "Numerical Simulation Studies on the Design of the Prosthetic Heart Valves Belly Curves." Fluids 9, no. 9 (2024): 209. http://dx.doi.org/10.3390/fluids9090209.

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Prosthetic heart valves (PHVs) are employed to replace the diseased native valve as a treatment of severe aortic valve disease. This study aimed to evaluate the effect of curvature of the belly curve on valve performance, so as to support a better comprehension of the relationship between valve design and its performance. Five PHV models with different curvatures of the belly curve were established. Iterative implicit fluid–structure interaction simulations were carried out, analyzing in detail the effect of belly curvature on the geometric orifice area (GOA), coaptation area (CA), regurgitant

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Sathish, S., and K. Mohanasundaram. "An Atrial Fibrillation with Normal Limits using Signal Processing- A Review." International Journal of Engineering & Technology 7, no. 2.24 (2018): 453. http://dx.doi.org/10.14419/ijet.v7i2.24.12133.

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Atrial fibrillation is an irregular heartbeat (arrhythmia) that can lead to the stroke, blood clots, heart failure and other heart related complications. This causes the symptoms like rapid and irregular heartbeat, fluttering, shortness of breath etc. In India for every around 4000 people eight of them are suffering from Atrial Fibrillation. P-wave Morphology. Abnormality of P-wave (Atrial ECG components) seen during sinus rhythm are associated with Atrial fibrillation. P-wave duration is the best predictor of preoperative atrial fibrillation. but the small amplitudes of atrial ECG and its gra

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17

Chen, Lu, Zhuo Zhang, Tao Li, and Yu Chen. "A Review of Biomechanical Studies of Heart Valve Flutter." Fluids 9, no. 11 (2024): 254. http://dx.doi.org/10.3390/fluids9110254.

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This paper reviews recent biomechanical studies on heart valve flutter. The function of the heart valves is essential for maintaining effective blood circulation. Heart valve flutter is a kind of small vibration phenomenon like a flag fluttering in the wind, which is related to many factors such as a thrombus, valve calcification, regurgitation, and hemolysis and material fatigue. This vibration phenomenon is particularly prevalent in valve replacement patients. The biomechanical implications of flutter are profound and can lead to micro-trauma of valve tissue, accelerating its degeneration pr

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18

Gul, Ambreen, Muhammad Asad Sheikh, and Atif Rao. "Runaway pacemaker." BMJ Case Reports 12, no. 3 (2019): e225411. http://dx.doi.org/10.1136/bcr-2018-225411.

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Runaway pacemaker is phenomenon in which pacemaker induces ventricular tachycardia as a result of some malfunction in the device. This entity is not very common in clinical practice. Normally, the pacemaker perceives the inherent cardiac impulse and hence averting the delivery of pacemaker stimulus in susceptible period of cardiac cycle. This is a case of a pacemaker-induced tachycardia (named as runaway pacemaker) in a patient with a history of Single Chamber Ventricular (VVI) pacemaker. A 75-year-old man was admitted with 3 days history of fluttering in the chest, shortness of breath, centra

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19

Dhengare, Archana. "Case Report on Dilated Cardiomyopathy and Complete Heart Block and Hypertension." Journal of RURAL NURSING 9, no. 2 (2021): 10–15. http://dx.doi.org/10.54054/jrn.20219219.

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Background: : Cardiomyopathy is a long-term condition in which the heart muscle (myocardium) becomes abnormally enlarged, thicker, and/or rigid. As the heart muscle weakens, it loses its ability to adequately pump blood, resulting in irregular heartbeats (arrhythmias) and possibly heart failure. Full heart block occurs when an electrical signal does not ordinarily flow from the atria, or top chambers of the heart, to the ventricles or lower chambers. The atrioventricular (AV) node is weakened after surgery, which might lead to total heart block. Complete heart block often occurs without the ne

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20

Tobin, John. "Chaos theory, psychiatry, and a quiet revolution." Irish Journal of Psychological Medicine 14, no. 3 (1997): 112–14. http://dx.doi.org/10.1017/s0790966700003244.

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What is probably one of the most exciting potential advances in psychiatry is occurring slowly, possibly too slowly and has gone unnoticed by many. I am talking about ‘Chaos theory’, which is a mathematical concept that has influenced the study of such diverse subjects as the weather, evolution and the electroencephalogram. Is it our lack of mathematical training that makes us so fearful? This may be so, but we can still understand chaos theory without having to learn large mathematical formulae.Chaos theory is about dynamic non-linear systems that are orderly at first, but may become complete

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Watson, Gavan P. L. "Hinterland's Who’s Who: Birding, Multiplicity, and Barn Owls." UnderCurrents: Journal of Critical Environmental Studies 17 (November 16, 2013): 6–10. http://dx.doi.org/10.25071/2292-4736/37681.

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Full TextThe Barn Owl The Barn Owl (Tyto alba) is a medium-sized, tawny coloured owl that, with the exception of Antarctica, has worldwide distribution. Like most owls the Barn Owl is considered to be nocturnal. Like all owls, it is predatory bird. In the Barn Owl’s case, members of the species are said to enjoy (or specialize, in the biological parlance) in small ground mammals—rodents, for example. In Eastern North America, the majority of their diet would include Meadow Voles (Microtus pennsylvanicus) and Deer Mice (Peromyscus maniculatus). Barn Owls strike a distinct-look with their lack o

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22

Wu, Zixuan, Saikat Basu, Seungho Kim, Mark Sorrells, Francisco J. Beron-Vera, and Sunghwan Jung. "Coherent spore dispersion via drop-leaf interaction." Science Advances 10, no. 5 (2024). http://dx.doi.org/10.1126/sciadv.adj8092.

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The dispersion of plant pathogens, such as rust spores, is responsible for more than 20% of global crop yield loss annually. However, the release mechanism of pathogens from flexible plant surfaces into the canopy is not well understood. In this study, we investigated the interplay between leaf elasticity and rainfall, revealing how a flexible leaf structure can generate a lateral flow stream, with embedded coherent structures that enhance transport. We first modeled the linear coupling between drop momentum, leaf vibration, and the stream flux from leaf surfaces. With Lagrangian diagnostics,

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23

Armiento, Serena, Iwona Bernacka-Wojcik, Abdul Manan Dar, Eleni Stavrinidou, Fabian Meder, and Barbara Mazzolai. "Powering a molecular delivery system by harvesting energy from the leaf motion in wind." Bioinspiration & Biomimetics, November 29, 2024. http://dx.doi.org/10.1088/1748-3190/ad98d3.

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Abstract Smart agriculture tools as well as advanced studies on agrochemicals and plant biostimulants aim to improve crop productivity and more efficient use of resources without sacrificing sustainability. Recently, multiple advanced sensors for agricultural applications have been developed, however much less advancement is reported in the field of precise delivery of agriculture chemicals. The organic electronic ion pump (OEIP) enables electrophoretically-controlled delivery of ionic molecules in the plant tissue, however it needs external power-supplies complicating its application in the f

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Ojo, Oluwafemi, Eetu Kohtanen, Aojia Jiang, Jacob Brody, Alper Erturk, and Kourosh Shoele. "Flapping dynamics of an inverted flag behind a cylinder." Bioinspiration & Biomimetics, September 30, 2022. http://dx.doi.org/10.1088/1748-3190/ac96b9.

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Abstract The inverted flag configuration is inspired by biological structures (e.g., leaves on a tree branch), showing rich dynamics associated with instabilities at lower flow speeds than the regular flag configuration. In the biological counterpart, the arrangement of leaves and twigs on foliage creates a complex interacting environment that promotes certain dynamic fluttering modes. While enabling a large amplitude response for reduced flow speeds is advantageous in emerging fields such as energy harvesting; still, little is known about the consequence of such interactions. In this work, we

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Che, Yuefeng, and Mohammed Yousuf Abo Keir. "Study on the training model of football movement trajectory drop point based on fractional differential equation." Applied Mathematics and Nonlinear Sciences, November 22, 2021. http://dx.doi.org/10.2478/amns.2021.2.00095.

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Abstract To study the landing point of the curved football track, the dynamic differential equations of the football were derived in this paper. The air resistance moment was taken into account, and the rotation axis was no longer confined to the vertical direction. We compare various soccer movement regularity of different initial angular velocity 0, in turn, using standard numerical methods to solve differential equations, the selection of the initial angular velocity of three typical 0s has been carried on the detailed numerical study, and the results show that: in the same velocity V play

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Hasegawa, Kanae, Edward M. Powers, Zachary T. Yoneda, Travis D. Richardson, and William G. Stevenson. "Intracardiac thrombi fluttering like hair in the wind at VT ablation." Journal of Cardiovascular Electrophysiology, October 3, 2023. http://dx.doi.org/10.1111/jce.16079.

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AbstractIntroductionIntracardiac echocardiography (ICE) reveals mobile thrombus on implantable electronic device leads in some patients undergoing electrophysiologic procedures.MethodsICE was performed in a patient undergoing ventricular tachycardia (VT) ablation.ResultsICE showed extensive mobile thrombi on the implantable cardioverter defibrillator lead. Radiofrequency catheter ablation of VT from perimitral scar was safely performed via a retrograde aortic approach. After the procedure, chronic anticoagulation was initiated. CT‐angiography of the chest 2 months later showed no pulmonary emb

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Aljalloud, Ali, Konstantina Spetsotaki, Lachmandath Tewarie, et al. "Stent deformation in a sutureless aortic valve bioprosthesis: a pilot observational analysis using imaging and three-dimensional modelling." European Journal of Cardio-Thoracic Surgery, November 13, 2021. http://dx.doi.org/10.1093/ejcts/ezab485.

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Abstract OBJECTIVES The goal of this analysis of the Perceval aortic bioprosthesis was to investigate the ovalization/deformation of the Perceval prosthesis stent after implantation and its propensity for cusp dysfunction, fluttering, fibrosis and blockage. METHODS Between August 2014 and May 2019, a total of 134 patients (52% female) underwent aortic valve replacement with the Perceval bioprosthesis. We reconstructed three-dimensional models of the Perceval stent using thorax computed tomography scans for 16 patients employing the software Mimics (Materialise NV, Leuven, Belgium) and analysed

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Cook, Timothée R., Rowan Martin, Jennifer Roberts, et al. "Parenting in a warming world: thermoregulatory responses to heat stress in an endangered seabird." Conservation Physiology 8, no. 1 (2020). http://dx.doi.org/10.1093/conphys/coz109.

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Abstract The frequency of extreme weather events, including heat waves, is increasing with climate change. The thermoregulatory demands resulting from hotter weather can have catastrophic impacts on animals, leading to mass mortalities. Although less dramatic, animals also experience physiological costs below, but approaching, critical temperature thresholds. These costs may be particularly constraining during reproduction, when parents must balance thermoregulation against breeding activities. Such challenges should be acute among seabirds, which often nest in locations exposed to high solar

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Demsa, Irina, Crișu Daniela, Mihai Ștefan Haba Cristian, et al. "Persistent left superior vena cava with absent right superior vena cava and discrete subaortic stenosis diagnosed in a patient with sick sinus syndrome: a case report and brief review of the literature." September 22, 2020. https://doi.org/10.5281/zenodo.4044272.

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Figure S1: Doppler evaluation of the subaortic obstruction. Figure S2: Fluoroscopic image of the final trajectory of the pacemaker lead. Video S1: Transthoracic echocardiography, apical 3-chamber view, showing the subaortic membrane and the dilated coronary sinus. Video S2: Transthoracic echocardiography, apical 3-chamber view, showing the mild aortic regurgitation. Video S3: Transthoracic echocardiography, apical 4-chamber view, showing the cardiac cavities with normal dimensions, and the left ventricle with normal systolic function. Video S4: Transesophageal echocardiography view showing the

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30

Oyelade, Akintoye O., and Ayo A. Oyediran. "Imperfect Bifurcation and Chaos of Slightly Curved Carbon Nanotube Conveying Hot Pressurized Fluid Resting on Foundations." Journal of Fluids Engineering 142, no. 11 (2020). http://dx.doi.org/10.1115/1.4047801.

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Abstract Unintended slight curvature of a straight pipe and temperature variation in a pipe has been found to create uncertainties in tubes and pipes. Fluttering, divergence, and chaotic instabilities of slightly curved carbon nanotubes (SCCNT) conveying hot pressurized fluid are investigated in this paper. The SCCNT is modeled on the basis of large deformation strains. Their gradients are included in the strain energy expression and the velocity and its gradients in the kinetic energy derivation. In modeling the size effects, both the static and kinetic length scales in the energy equations w

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31

Hart, Alexis M., Dominique Augustin, Sandra M. Troxell‐Smith, and Molly McGuire. "An Open‐Door Policy: How Removal of a Visual Barrier Improved Welfare in Zoo‐Housed Bald Eagles (Haliaeetus leucocephalus)." Zoo Biology, February 22, 2025. https://doi.org/10.1002/zoo.21893.

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ABSTRACTBirds of prey are renowned for their excellent visual acuity, but they are often not given visual access consistent with their natural behavior when housed under managed care. Often, these birds are housed under managed care after sustaining injuries, which prohibits their return to the wild. In addition, many of these rescued raptors do not have the same history of acclimation to human presence as other zoo animals due to being wild‐hatched. These factors lead to a potential welfare concern for raptors under managed care, which may not appropriately address their natural and individua

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Hunter, L. D., M. J. Monaghan, G. Lloyd, et al. "P3134Variations in anterior mitral valve leaflet restriction that may lead to the erroneous diagnosis of rheumatic heart disease." European Heart Journal 40, Supplement_1 (2019). http://dx.doi.org/10.1093/eurheartj/ehz745.0209.

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Abstract Introduction Anterior mitral valve leaflet (AMVL) restriction is a prominent morphological feature of rheumatic heart disease (RHD). The World Heart Federation (WHF) criteria for echocardiographic diagnosis of RHD rely on the use of colloquial terms such as “dog-leg” to define AMVL restriction rather than a strict, reproducible definition. We recognise AMVL restriction when the tip of the leaflet is seen to point away from the interventricular septum and towards the posterior left ventricular (LV) wall at peak diastole in the parasternal long axis (PSLAX) view. This definition however

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Botros, K. K. "Spring Stiffness Selection Criteria for Nozzle Check Valves Employed in Compressor Stations." Journal of Engineering for Gas Turbines and Power 133, no. 12 (2011). http://dx.doi.org/10.1115/1.4004113.

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Nozzle type check valves are often employed in compressor stations in three locations: compressor outlet, station discharge, and station bypass. The fundamental design concept of these valves is based on creating a converging diverging flow through the valve internal geometry such that a minimum area is achieved at a location corresponding to the back of the check valve disk at the fully open position. This will ensure maximum hydrodynamic force coefficient which allows the valve to be fully open with minimum flow. Spring forces and stiffness determine the performance of this type of check val

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Zhang, Ling, Bin Chen, and WeiMin He. "Occult intraocular aluminium foreign body causing rhegmatogenous retinal detachment: a case report." BMC Ophthalmology 23, no. 1 (2023). http://dx.doi.org/10.1186/s12886-023-02881-w.

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Abstract Background Ocular trauma is complex and varied, and some occult intraocular foreign bodies (IOFBs) can lead to uncommon symptoms and signs. We report a case of rhegmatogenous retinal detachment (no obvious wound, no pain, no intraocular infection or other symptoms) caused by an occult intraocular aluminium foreign body, which could have been easily missed. Case presentation A 42-year-old male presented to the outpatient department of our hospital complaining of fluttering black dots and decreased vision in his left eye that began 3 months earlier. He was diagnosed with "floaters" at a

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Ekbote, Govind Shreenivas, Mohammed Khalifa, Balasubramanian Venkatesa Perumal, and Srinivasan Anandhan. "Development of a flexible piezoelectric and triboelectric energy harvester with piezo capacitive sensing ability from barium tungstate nanorod-dispersed PVDF nanofabrics." Flexible and Printed Electronics, April 25, 2023. http://dx.doi.org/10.1088/2058-8585/acd010.

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Abstract Lead-free flexible piezoelectric and triboelectric nanogenerators are sought after due to their ability to produce electricity by harnessing wasteful mechanical energy. A comprehensive understanding of additives and processing techniques is crucial for fine-tuning the performance of such energy systems. We have investigated in detail the effect of the addition of reverse microemulsion synthesized barium tungstate nanorods (BWN) on morphology, crystallinity, polymorphism of electrospun nanofabrics of poly(vinylidene fluoride) (PVDF). The electroactive phase content of the nanofabrics w

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Kim, Moon-Seok, Il-Woong Tcho, and Yang-Kyu Choi. "Cryptographic triboelectric random number generator with gentle breezes of an entropy source." Scientific Reports 14, no. 1 (2024). http://dx.doi.org/10.1038/s41598-024-51939-2.

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AbstractA wind-driven triboelectric nanogenerator (W-TENG) is a promising energy harvesting device due to its clean, ubiquitous and unexhausted properties. In addition, a W-TENG induces unpredictable chaotic outputs from wind flow that can serve as an entropy source for cryptography. This can be applied to a true random number generator (TRNG) for a secured system due to its inherent turbulent nature; thus, a W-TENG with a two-in-one structure can simultaneously generate both power and true random numbers. However, a previously reported W-TENG had one major drawback: a wind velocity of 10 m/s

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