Three-dimensional (3D) microsupercapacitors (MSC) have been spotlighted, because they overcome limited areal capacitance of two-dimensional planar MSCs. Specially, 3D printing technology offers numerous advantages to generate electrodes for MSCs, which includes time-saving, cost-effective manufacturing, and realization tailorable complex electrode designs. In this paper, we report novel hierarchical designs conductive MSC by digital light processing (DLP)-based printing. Photocurable...

Inspired by the exoskeletons of insects, we have developed a number manufacturing methods for fabrication structures attachment, protection, and sensing. This paradigm is based on infrared laser machining lamina bonding layered structures. The been integrated with an inexpensive palm-sized legged robot, VelociRoACH [Haldane et al., 2013, “Animal-Inspired Design Aerodynamic Stabilization Hexapedal Millirobot,” IEEE/RSJ International Conference Robotics Automation, Karlsruhe, Germany, May...

In this work, we present a soft robotic gripper for grasping various objects by mimicking in-hand manipulation. The consists of three fingers. Each finger contains air chambers: Two chambers (side chambers) twisting in two different directions and one chamber (middle chamber) grasping. combination these makes it possible to grasp an object rotate it. We fabricated the using 3D-printed molds. used finite element method (FEM) design most effective model, later results were compared with from...

This paper presents novel Gait Decomposition (GD) and Parameter Gradient (GPG) methods for enhancing snake robot control optimization. Snake robots face challenges in parameter tuning due to their complex dynamics the need preserve gait characteristics during control. GD fine-tunes parameters while maintaining prevent unintended changes application of serpenoid curves, typical robots. A key feature is use a motion matrix represent joint movements, ensuring preservation characteristics....

In this paper, a hot embossing heating roll with induction heater inside the is proposed. The coil installed that used as of roll-to-roll (R2R) apparatus. Using an gives system more even temperature distribution on surface compared to previous systems, which electric wire for heating. This internal can keep working environment much cleaner because there no oil leakage oiled roll. paper describes principles and provides analysis proposed system; some evaluation has also been performed system....

Recently, laser scanners have been used for processing such as cutting, welding, and grooving, especially in the automotive industry. The need a high-speed driving to minimize cracks caused by thermal shock of brittle materials. Therefore, novel system that is composed source piezoelectric-driven tilt mirror control reflection angle beam, stage equipped with has investigated. In this study, designed analyzed scanning performance achieve beam spot 30 µm, pattern width 1 mm, an overlap ratio...

Snake robots are composed of multiple links and joints have a high degree freedom. They can perform various motions overcome terrains. need additional driving algorithms sensors that acquire terrain data in order to rough terrains such as grasslands slopes. In this study, we propose assistant mechanism (DAM), which assists locomotion without sensors. paper, confirmed the DAM prevents roll down on slope increases speed through dynamic simulation experiments. It was possible 27 degrees using...

This study investigates the effect of tortoise‐inspired locomotion on enhancing energy efficiency in legged robots. Tortoises, known for their high efficiency, provide a unique model robot and gait design, where specific posture significantly contribute to efficiency. hypothesizes that belly‐dragging tortoises can improve To test this hypothesis, quadruped mimicking these tortoise characteristics is developed, utilizing cost transport (CoT) as measure Dynamic simulations real‐world...

In this paper, we study the influence of fingerprint and sweat on friction between hand an object. When contacts a finger or object, it is sometimes easy to pick up particular, can see phenomenon when grasping thin object such as paper vinyl. The reason for increase force, physically analyzes natural phenomenon. To end, investigate cause force solid liquid calculate water present within fingerprint. support theoretical analysis, conduct experiments measure by making finger-shaped silicon...

In this paper, a novel caudal fin for actuating robotic fish is presented. The proposed waves in vertical direction with specific spatial shape, which determined by so-called shape factor. For factor, traveling wave phase difference formed on during motion. It will be shown the analysis that maximum reaction torque at joint of varies depending factors. Compared conventional plate type fin, factor 2π can eliminate perfectly, while keeping propulsion force unchanged. benefits demonstrated experiments.

In the field of milli-robots, several methods constructing robots by laminating materials and then folding have been developed. Among these methods, smart composite microstructures (SCM) is widely used for making lightweight small mobile robots. However, in case a robot manufactured SCM method, due to flexible easily deformable links joints, it often difficult obtain proper kinematic movement deformation structure when heavy load applied. this paper, studies on mechanism design manufacturing...

In this study, we examined the sensitivity of embossed pattern depth to preheat supply and cooling investigated how type density affect depth. The main factors that qualities roll-to-roll hot embossing, such as roller temperature, speed, applied force, were determined using response surface methodology. Eight conditions then added determine time-dependent effects heat transfer with custom-designed preheating systems. An extended time for polymethylmethacrylate substrate contributed...

In this study, a Crossed Flexural Hinge (CFH) structure was used for the design of humanoid robot hand that can absorb any abrupt external force and has large payload, giving it advantages both rigid compliant robots. Structural problems were identified through 6 × stiffness matrix to analyze whether CFH is suitable use as an anthropomorphic hand. To reinforce weak stiffness, paired (p-CFH) proposed joints. addition, verified theoretical experimental methods p-CFH superior characteristics...

This study provides an analysis of the hot embossing process with poly methyl methacrylate (PMMA) film. The engraves a fine pattern on flexible film using stamp, applied heat and pressure. As quality varies according to various variables, mechanism making embossed shape is complicated difficult analyze. Therefore, takes much time cost because it usually has perform lot experiments find appropriate condition. In this paper, was analyzed computational method quickly optimal process. To do...

This paper presents a novel Magneto-rheological (MR) brake system that can self-regulate the output braking torques. The proposed MR generate torque at critical rotation speed without an external power source, sensors, or controllers, making it simple and cost-effective device. consists of rotary disk, permanent magnets, springs, fluid. magnets are attached to disk via they move outward through grooves with two different gap distances along radial direction stator due centrifugal force....

In this study, we propose a new hot embossing technology called impact print‐type (or simply, impact‐type) process. Our process is based on the concept of dot or line printer, in that it involves forming fine pattern by applying force heated substrate using probe fine‐shaped printing head. We developed prototype and conducted experiments to verify efficacy our method which an electromechanical actuator used create necessary force. believe study makes significant contribution literature...

This paper presents the development of Very Large RoACH (VLR), which is a rapidly-prototyped folded cardboard cockroach-like robot for carrying relatively heavy loads. To increase load capacity, vertically movable platform designed, can decouple an internal payload from loading hips. Based on previous VelociRoACH design, VLR designed greater by 160% size scaling. After building prototype, experiments are performed. The speed and traction force measured to validate performance proposed robot....

This paper presents a proportional pressure reducing valve for clutch control system and tilting pad angle of the hydraulic pump system. The this study has spool with pin solenoid actuator instead an on-off actuator. consists bobbin coils, plunger core cone. cone is very important equipment attraction force adjustment controls flux saturation leakage. So constant in range In study, new was proposed validity mechanism discussed. dynamic characteristics object were studied by numerical...