Results 141 to 150 of about 19,670 (249)

Negative Stiffness Induced and Controlled by Constriction

physica status solidi (b), EarlyView.
Structures with negative stiffness can be stabilized by constriction of external displacement. Furthermore, constriction can make a conventional positive stiffness material exhibit negative stiffness, either bidirectional or unidirectional (shown in the figure).
Elena Pasternak, Arcady V. Dyskin
wiley   +1 more source

Autonomous Navigation in Large‐Scale Underground Environments Based on a Purely Topological Understanding of Tunnel Networks

Journal of Field Robotics, EarlyView.
ABSTRACT This work presents a non‐geometrical navigation approach based on a purely topological understanding of underground environments. By conceptualizing subterranean scenarios as a set of tunnels that intersect with each other, and taking a navigation approach based on topological instructions, we simplify the navigation problem to the sequential ...
Lorenzo Cano, Danilo Tardioli, Alejandro R. Mosteo   +2 more
wiley   +1 more source

Control System for the Navigation of the Agricultural Robots: A Review

Journal of Field Robotics, EarlyView.
ABSTRACT Control systems for the navigation of autonomous agricultural robots—particularly those operating in uneven terrain and in the presence of static or dynamic obstacles—have advanced considerably in recent years. As conventional machinery evolves toward increasingly automated systems, the design of reliable navigation controllers has become ...
Edna Carolina Moriones Polanía, Hugo Rafacho Fernandes, Daniel Albiero, Angel Pontin Garcia   +3 more
wiley   +1 more source

Highly Dynamic Soft Electrohydraulic Origami Actuators for Agile and Multimodal Robotic Locomotion

SmartBot, EarlyView.
Most current soft robots still lag far behind their natural counterparts in both agility and speed, mainly attributed to the limited morphing modes and performance of soft actuators. Here, the authors report a new methodology of electrohydraulic origami (EHO) for creating powerful and multimodal soft actuators with large strain, high speed, lightweight,
Wenbo Li, Yuanzhen Zhang, Guorui Li, Hai Li, Kai Tao, Wenming Zhang, Jian Xu   +6 more
wiley   +1 more source

Tetrazine Functionalized Graphene Enables Capture of Ultra‐Low Concentrations of Biomacromolecules

Small, EarlyView.
A novel method for covalent modification of monolayer graphene utilizing tetrazine containing diazonium salt is demonstrated. The modified graphene bearing tetrazine moieties undergoes inverse electron demand Diels‐Alder reactions with trans‐cyclooctene‐linked molecules, enabling bioorthogonal attachment of nanobodies that selectively capture EGFP ...
Ravindra K. Gupta, Hanbin Jeong, April Goehring, Eric Gouaux, Maggie He   +4 more
wiley   +1 more source

Investigating various nonlinear vibration problems using VIBRANT: A tool based on Abaqus and Python. [PDF]

PLoS One
Tüfekci M, Sevencan F, Yurdakul O.
europepmc   +1 more source

SERS‐Based Nano‐ and Microsystems Toward Biomedical Applications

Small, EarlyView.
This review provides a current overview of nano‐ and microscale SERS‐based devices, encompassing all aspects from material design to practical applications. We highlight controlled SERS‐active architectures, including patterned substrates, nanorods, microspheres, micromotors, and microneedles, as well as combinations of these microfluidic systems.
Gohar Soufi, Tijana Maric, Isidro Badillo‐Ramírez, Juliane Fjelrad Christfort, Matteo Tollemeto, Carmen Milan Guimera, Casper Nisula, Giulia Zappalá, Laura De Vittorio, Marta Rubio‐Huertas, Sungyeong Kim, Ziqiao Li, Morten Bo Søndergaard Svendsen, Zhongyang Zhang, Anja Boisen   +14 more
wiley   +1 more source

Coupled Effects of the Mover Mass on Stepping Characteristics of Stick-Slip Piezoelectric Actuators. [PDF]

Micromachines (Basel)
Ding Z, Zhou X, Wang K, Xu Z, Dong J, Fan Y, Yu H.   +6 more
europepmc   +1 more source

Sub‐Nanometer Ferroelectric Tunnel Junctions With Record‐High on‐Current Density Through Synergistic Microwave Annealing and High‐Field Activation

Small, EarlyView.
ABSTRACT High‐density memory systems require a high on‐state current density (Jon) to ensure fast read speeds and large sensing margins in cross‐point array applications. However, achieving high Jon in atomically thin ferroelectric tunnel junctions (FTJs) remains an unmet challenge, hindered by parasitic interfacial layer (IL), depolarization fields ...
Laeyong Jung, Hojung Jang, Jongseon Seo, Hyunsang Hwang   +3 more
wiley   +1 more source

Modeling and Design of a Soft Capacitive Slip Sensor with Fluid Dielectric Interlayer. [PDF]

Micromachines (Basel)
Landi E, Lisini Baldi T, Pallaoro M, Micheletti F, Carli F, Fort A.   +5 more
europepmc   +1 more source