Results 111 to 120 of about 161,873 (336)

Ultra‐Sensitive Nanofiber‐Based Triboelectric Nanogenerator for Energy Harvesting and Self‐Powered Sensing

open access: yesAdvanced Materials, EarlyView.
A multidimensional molecular strategy optimizes the tribonegative layer by electrospinning PVDF‐HFP for dipole alignment and crystallinity, followed by 2D borophene doping to enhance conductivity and charge trapping. Integrated with Nylon‐66 nanofibers, the composite device delivers a record sensitivity of 53.8 ± 1.2 V kPa−1 at 3 Hz, enabling ultra ...
Sajib Roy   +7 more
wiley   +1 more source

New generation drilling bits

open access: yesIOP Conference Series: Earth and Environmental Science, 2017
The article describes innovative approach to designing new generation drilling bits with diamond hard-metal-alloy plates coring in accordance with established regularities. Based on the results of theoretical and experimental investigations the authors have stated the offers on the important aspects of drilling bits with diamond hard-metal-alloy plates
A A Tretyak   +5 more
openaire   +1 more source

Percussive Augmenter of Rotary Drills for Operating as a Rotary-Hammer Drill [PDF]

open access: yes
A percussive augmenter bit includes a connection shaft for mounting the bit onto a rotary drill. In a first modality, an actuator percussively drives the bit, and an electric slip-ring provides power to the actuator while being rotated by the drill ...
Aldrich, Jack Barron   +5 more
core   +1 more source

Soft Electromagnetic Actuator and Oscillator

open access: yesAdvanced Materials Technologies, Volume 10, Issue 6, March 18, 2025.
This work presents a groundbreaking soft electromagnetic system capable of bistable actuation and self‐regulated oscillation. Using liquid metal and silicone as a compliant conductor, the actuator enables force generation, sensing, and feedback with minimal power.
Noah D. Kohls, Yi Chen Mazumdar
wiley   +1 more source

The effects of multiple drilling of a bone with the same drill bit: thermal and force analysis. [PDF]

open access: yesHeliyon, 2022
Tsiagadigui JG   +5 more
europepmc   +1 more source

Printed Interconnects for Heterogeneous Systems Integration on Flexible Substrates

open access: yesAdvanced Materials Technologies, Volume 10, Issue 6, March 18, 2025.
Key components (sensors, energy devices, communication devices, computing chips, and interconnects) of flexible hybrid electronic (FHE) system connected via conductive printed metal tracks. The figure in the insets shows out‐of‐plane printed interconnects providing opportunities for lithography‐free formation of VIAs, in‐plane access of UTCs pads, and ...
Abhishek Singh Dahiya   +3 more
wiley   +1 more source

Powder-Collection System for Ultrasonic/Sonic Drill/Corer [PDF]

open access: yes
A system for collecting samples of powdered rock has been devised for use in conjunction with an ultrasonic/sonic drill/corer (USDC) -- a lightweight, lowpower apparatus designed to cut into, and acquire samples of, rock or other hard material for ...
Bao, Xiaoqi   +5 more
core   +1 more source

An Injection‐Molded Modified Silicone Rubber for Cancer‐on‐Chip Applications

open access: yesAdvanced Materials Technologies, Volume 10, Issue 6, March 18, 2025.
This study describes the characterization and application of an injection‐molded functionalized PDMS fluidic insert for the commercially available Micronit system. Modified PDMS can accommodate cell culture and is able to covalently bind proteins for long‐lasting coatings under flow‐conditions.
Ben J. Haspels   +7 more
wiley   +1 more source

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