Articles tagged with Bistability
Researchers developed new photon avalanching nanoparticles that exhibit high nonlinearities, overcoming challenges in realizing intrinsic optical bistability at the nanoscale. The breakthrough paves the way for fabricating optical memory and transistors on a nanometer scale comparable to current microelectronics.
Multistable mechanical metamaterials can switch between multiple stable configurations under external loading, making them reusable and efficient for quick action. Their unique properties make them promising for various engineering applications, including energy absorption, soft actuators/robots, and wave control.
A team of researchers has discovered a way to harness random telegraph noises in semiconductors, generating high-amplitude signals and manifesting inherent quantum states. By introducing vanadium into tungsten diselenide, they created a device that can switch between two stable states using voltage polarity.
The researchers proposed a type of ultra-tunable bistable structure with programmable energy barriers and trigger forces. The structures can be customized for various robotic applications, demonstrating superior performances in high-speed locomotion, adaptive sensing, and fast grasping.
Researchers at Arizona State University have designed a drone with an inflatable frame that can absorb impact forces and provide collision resilience. The drone's stiffness is tunable, allowing it to physically interact with its surroundings and accomplish tasks like perching, which involves controlled collisions.
Researchers at Carnegie Mellon University have created soft robots that can transition from walking to swimming, crawling to rolling, or jumping. The robots use highly dynamic bistable soft actuators made of shape-memory alloy springs that react to electrical currents, allowing for varied locomotion and adaptability.
Researchers at NC State University have created an energy-efficient soft robot that can swim more than four times faster than previous models. The 'butterfly bots' use bistable wings for propulsion and achieve speeds of up to 3.74 body lengths per second.
Researchers at NC State University have developed a ring-shaped soft robot capable of crawling across surfaces when exposed to elevated temperatures or infrared light. The 'ringbots' are made of liquid crystal elastomers in the shape of looped ribbon, resembling a bracelet, and can pull a small payload across various environments.
Researchers at ICIQ have demonstrated that single molecules can retain properties even when the stimulus disappears, breaking previous expectations. This discovery has significant implications for molecular data storage and could lead to new possibilities for storing multifunctional information.
Researchers at Harvard University have developed inflatable actuators that can bend, twist, and move in complex ways using origami-inspired designs. The actuator's bistable origami blocks allow it to perform up to eight different motions with a single pressure source.
Researchers from the University of Liège have developed a Bistable Recurrent Cell (BRC) that enables recurrent networks to learn temporal relationships over 1000 time steps, surpassing classical methods' limitations. This breakthrough could improve AI's ability to process time-series data and predict future events.
New strategies aim to achieve ideal bistable electrochromic systems for green displays. Researchers explore various approaches, including material design optimization, indirect EC systems, and device structure improvements. The goal is to overcome technical bottlenecks and enable widespread adoption of sustainable displays.
Purdue University scientists have created a patterned sheet of domes that can store energy in its skin, enabling strong mechanical tasks and programmable data processing. The technology has potential applications in flexible robotics and mechanical computing, where energy storage and efficient processing are crucial.
Researchers from IKBFU and the University of Oviedo tested a new Preisach model for analyzing magnetic interactions in ferromagnetic microwires. The study found that real-life conditions can affect the applicability of the method, highlighting its limitations.
Parametric oscillators can be made to resonate when driven by high and low frequencies, a discovery that could improve our understanding of nonlinear systems in various fields. This is achieved through the tuning of the high-frequency driving force to match the low frequency, causing the system to exhibit resonance.
Researchers developed a mechanical linkage containing bistable joints that can transform into stable, locked curves through state-transitioning wave propagation. The approach enables the creation of deployable 3D structures of arbitrary shapes with potential for larger-scale applications.
Hyperbolic paraboloid origami has been found to exhibit structural bistability, allowing it to find a resting equilibrium in two different states. By tuning the folds of concentric squares, researchers can create structures with multiple stable configurations, enabling new applications in robotics and electronics.
By using stimuli-responsive materials and geometric principles, researchers have designed structures that can determine their response to the environment through physical and chemical changes. These 'embodied logic' systems can switch between multiple configurations in response to pre-determined environmental cues, enabling complex mec...
Researchers at ETH Zurich have developed a new propulsion concept that exploits water temperature for swimming robots, eliminating the need for engines or power supplies. The robots use bistable propulsion elements triggered by shape memory polymer strips to propel forward.
Engineers at Caltech and ETH Zurich developed self-propelled robots that paddle through water using temperature-responsive materials. The devices use a bistable element and polymer strips to activate a switch and propel forward.
A US-based research team has demonstrated optical and electrical bistability for switching in a single transistor, offering potential solutions to the bandwidth limitations of electronic computers. The study showcases the control of transistor laser electrical and optical bistabilities by base current and collector voltage.
A recent study finds that large areas of the Amazon forest are less susceptible to a tipping point into savannah, contrary to previous research. The key factor was controlling for seasonality and removing data points from human-influenced areas, revealing a more resilient ecosystem.
Engineers have created a transistor that can form an optical-electric switch, enabling faster processing speeds. The device can communicate without interference, overcoming the bottleneck formed by electronic data transmission.
Soft materials can store and release elastic energy using bistable beams, allowing for signal propagation without dissipation. The developed system enables transmission of mechanical signals through long distances in autonomous soft systems.
Scientists at Southeast University propose a scheme to control optical steady behavior in GaAs quantum well structures via nonradiation coherence. The study reveals multi-stability and optical bistability, with the ability to convert between these states by adjusting phase differences in polarized electric fields.
Researchers developed a way to simplify modeling of 'bistable' systems, involving two evolving species with different timescales. This new approach can accurately predict population dynamics and time to extinction in predator-prey models.
Researchers found that handedness plays a key role in controlling the Vestibular-Ocular Reflex (VOR), a primitive reflex involving eye movement. The study suggests that higher-order brain functions govern this reflex, contradicting previous assumptions of its low-level control.
The study proposes a novel molecular mechanism for detecting chromosome alignment on the mitotic spindle, preventing errors in cell division. The checkpoint mechanism ensures irreversible progression through the cell cycle, blocking further progress until problems are corrected.
The study reveals that the switch is bistable, maintaining its on state even without external signals, and provides clues for novel drug targets for cancer and other diseases. The findings have implications for understanding cell fate decisions and the process of cell death.
A team of UCLA and Caltech chemists has demonstrated a large-scale, ultra-dense memory device using reconfigurable molecular switches. The device stores information using bistable rotaxane molecules, which can be switched at very modest voltages.
Scientists at Northwestern University have created a novel carbon nanotube-based nanoelectromechanical switch that exhibits bistability based on current tunneling. The device has the potential to revolutionize memory chips and electronic sensing devices.
Researchers have reported rapid progress in molecular electronics, with logic gates, memory circuits, and rectifiers demonstrated to work. The UCLA/Caltech team has achieved significant advancements in harnessing molecule-based switches for electronic circuitry.
Researchers at UCR have developed an organic compound that exhibits bistability in all three physical channels: optical, electrical, and magnetic. This multifunctional material has the potential to be used in advanced electronic devices.