In nature, many animals dive into water at high speeds, e.g., humans from cliffs, birds plunge, and aquatic porpoise breach. Diving provides opportunities for to find prey escape predators is a source of great excitement humans. However, diving platforms can cause severe injuries diver. this study, we demonstrate how similarity in the morphology fronts unifies slamming force across By measuring time-averaged impulse that increases linearly with impact height, are able estimate unsteady...

Mammals have presumably evolved to adapt a diverse range of ambient environmental conditions through the optimized heat and mass exchange. One crucial biological structures for survivability is nose, which efficiently transports thermally preconditions external air before reaching internal body. Nasal mucosa cavity help warm humidify inhaled quickly. Despite its role, morphological features mammal noses their effect in modulating momentum air, transfer dynamics, particulate trapping remain...

Certain fox species plunge-dive into snow to catch prey (e.g., rodents), a hunting mechanism called mousing. Red and arctic foxes can dive at speeds ranging between 2 4 m/s. Such mousing behavior is facilitated by slim, narrow facial structure. Here, we investigate how efficiently studying the role of skull morphology on impact forces it experiences. In this study, reproduce in lab using three-dimensional (3D) printed skulls dropped fresh quantify dynamic force impact. Impact modeled...

Passive filtering is a common strategy to reduce airborne disease transmission and particulate contaminants across scales spanning orders of magnitude. The engineering high-performance filters with relatively low flow resistance but high virus- or particle-blocking efficiency non-trivial problem paramount relevance, as evidenced in the variety industrial filtration systems face masks. Next-generation masks should retain sufficiently small droplets aerosols while having resistance. We...

Examples of fluid flows driven by undulating boundaries are found in nature across many different length scales. Even though driving mechanisms have evolved distinct environments, they perform essentially the same function: directional transport liquid. Nature-inspired strategies been adopted engineered devices to manipulate and direct flow. Here, we demonstrate how an boundary generates large-scale pumping a thin liquid near liquid-air interface. Two dimensional traveling waves on...

Our study demonstrates how a child's rubber popper, when snapped underwater, creates fascinating cavitation bubble formations. By using high-speed imaging, we explore the fluid mechanics behind formation and collapse of these bubbles due to pressure changes. Interestingly, forms toroidal shape rather than spherical one, with lifespan shorter that same outer radius. This research illuminates intricate interplay between dynamics within thin gap material elasticity.

Prior research has shown that individuals' facial appearance can be indicative of their given names. The present study probes the origins this face–name matching effect: whether names are based on innate characteristics or ...Our name is a social tag associated with us early in life. This investigates possibility self-fulfilling prophecy effect wherein develops over time to resemble stereotypes ...

<b><sc>Abstract.</sc></b> Leaves are constantly deforming and vibrating from exposure to blowing wind or impacting raindrops. Previous studies on the motion of a leaf upon drop impact have focused analyzing using cantilever beam theory. However, exhibits more complex dynamic response which involves not only bending motion, but also twisting flapping motions. In this study, we quantified how material properties (e.g., elasticity size) correlate with its fluttering motion. Specifically, peace...

<b><sc>Abstract.</sc></b> Water stress directly affects crop growth and is used as a key indicator in evaluating the yield. There were several non-destructive approaches suggested to utilize relationship between water leaf vibration frequency, but tendency of frequency due dryness was controversial. In addition, we previously observed that induces either an increase or decrease even with same plant species, i.e., soybean plant. Here, proposed new perspective surface curvature effect order...

Earth and Space Science Open Archive This is a preprint has not been peer reviewed. ESSOAr venue for early communication or feedback before review. Data may be preliminary.Learn more about preprints preprintOpen AccessYou are viewing the latest version by default [v1]Measuring fluttering frequency of leaf under water stressAuthorsSunghwanJungiDJisooYukMatthieuFuchsSee all authors Sunghwan JungiDCorresponding Author• Submitting AuthorCornell...

Examples of fluid flows driven by undulating boundaries are found in nature across many different length scales. Even though driving mechanisms have evolved distinct environments, they perform essentially the same function: directional transport liquid. Nature-inspired strategies been adopted engineered devices to manipulate and direct flow. Here, we demonstrate how an boundary generates large-scale pumping a thin liquid near liquid-air interface. Two dimensional traveling waves on...

Passive filtering is a common strategy used to reduce airborne disease transmission and particulate contaminants in buildings individual covers. The engineering of high-performance filters with relatively low flow resistance but high virus- or particle-blocking efficiency nontrivial problem paramount relevance, as evidenced the variety industrial filtration systems worldwide use face masks. In this case, standard N95-level covers have virus-blocking efficiency, they can cause breathing...