Article
Multidisciplinary Sciences
Jayraj V. Vaghasiya, Carmen C. Mayorga-Martinez, Jan Vyskocil, Martin Pumera
Summary: The authors developed a black phosphorous-based tactile sensor array system that provides touch sensing and audio feedback. This assistive technology is utilized by visually or speech-disabled individuals to communicate using audio as a platform. The piezoresistive tactile sensor based on a black phosphorous and polyaniline composite showed excellent sensitivity, low-pressure sensitivity, reasonable response time, and good cycle stability. A prototype device using six of these tactile sensors was able to convert pressed text into audio to assist visually or speech-disabled persons.
NATURE COMMUNICATIONS
(2023)
Article
Optics
M. Garg, A. Martin-Jimenez, M. Pisarra, Y. Luo, F. Martin, K. Kern
Summary: By combining scanning tunnelling microscopy and attosecond technologies, the coherent electronic motion generated in molecules by carrier-envelope-phase-stable laser pulses is visualized at angstrom-scale spatial resolution and subfemtosecond temporal resolution, allowing for a clearer observation and manipulation of electron dynamics in complex molecular systems.
Article
Materials Science, Multidisciplinary
Hyeongjin Jo, Yonghyeon Bae, Yujun Song, Jeongmok Han, Ji-Hyeon Song
Summary: This paper proposes a multimode sensor with three modes to detect and differentiate clockwise and counterclockwise twisting motions as well as stretching. The sensor consists of piezoelectric and piezoresistive sensors with a yarn-type functional structure and a stretchable substrate. It can distinguish forces exerted on it through different voltage and resistance change responses. The authors also constructed a human neck tracking system with this multimode sensor.
APPLIED MATERIALS TODAY
(2023)
Article
Multidisciplinary Sciences
M. Srinivasan, H. D. Vo, I Schiffner
Summary: This study presents an alternative method for reconstructing bird flight trajectories using a single video camera and a simple calibration procedure. The system delivers exact 3D coordinates of the bird's position and can compute the trajectory between successive wing extensions.
Article
Computer Science, Artificial Intelligence
Abhinav Malviya, Rahul Kala
Summary: Social robot motion planning involves learning human trajectories and modeling macroscopic behaviors. By observing simple primitives in human motion, a better understanding of human motion can be achieved. Using a social potential field algorithm and different social forces to model human behavior can help robots maintain a certain distance from humans in motion planning.
EXPERT SYSTEMS WITH APPLICATIONS
(2021)
Article
Behavioral Sciences
James P. Trujillo, Asli Ozyurek, Cornelis C. Kan, Irina Sheftel-Simanova, Harold Bekkering
Summary: The study found differences in communicatively relevant kinematic features of gestures between autistic and neurotypical individuals, as well as variations in how autistic individuals process repetition and complexity in gesture recognition compared to neurotypicals. These findings highlight how subtle aspects of behavior may be experienced differently by individuals with autism spectrum disorder and demonstrate the interaction between movement kinematics and social behavior in high-functioning autistic individuals.
Article
Biotechnology & Applied Microbiology
Chun-Lun Ni, Yi-Ting Lin, Liang-Yin Lu, Jia-Huei Wang, Wen-Chuan Liu, Sheng-Han Kuo, Ming-Kai Pan
Summary: Tracking kinematic details of motor behaviors is crucial for studying motor control. This study introduces the intrinsic oscillatory property (IOP) as a method for motion tracking and shows its superior performance in detecting movement disorders and studying kinematics.
BIOENGINEERING & TRANSLATIONAL MEDICINE
(2023)
Article
Mechanics
Eric Hedlund, Keith Hedlund, Adam Green, Ravin Chowdhury, Cheol S. Park, Joseph E. Maclennan, Noel A. Clark
Summary: Machine learning techniques have been used to identify inclusions on the surface of liquid crystal films. This method achieves higher accuracy than conventional tracking software, especially in non-uniform backgrounds or when target features are close to each other.
Article
Materials Science, Multidisciplinary
Haohua Wen, Jianyi Liu, Weijin Chen, Yue Zheng
Summary: This paper investigates the polarization switching mechanisms in ferroelectrics and reconsiders the role of heat dissipation, leading to the identification of four switching mechanisms. The study includes dynamic and thermodynamic analyses to verify the dominant mechanisms governed by heat dissipation.
Article
Multidisciplinary Sciences
Marcelina Los, Kamil Smolak, Cezary Mitrus, Witold Rohm, Nico Van de Weghe, Katarzyna Sila-Nowicka
Summary: With the advancement of sensors and the availability of high-resolution movement data, human mobility and movement ecology have rapidly developed. The Integrated Science of Movement aims to bridge the methodological gaps between these fields and enhance the understanding of movement processes. By applying human mobility metrics and data processing methods to GPS tracking data of European Herring Gulls, this study demonstrates the potential of using human mobility analysis methods to explain animal mobility behavior.
Article
Chemistry, Analytical
Anuparp Boonsongsrikul, Jirapon Eamsaard
Summary: In this paper, a human motion tracking method using a Tello EDU drone is designed and implemented. Experimental results show that the drone can successfully track a human moving at a speed of 2 m/s within a distance of 2-10 m. In a field of size 95x35m(2), the drone can track human motion throughout a whole day, with the best tracking results observed in the morning. The accuracy rate for human movement detection ranges from 96.67% to 100%.
Article
Engineering, Electrical & Electronic
Yaqing Feng, Xiangyu Chen, Zhiguang Xing, Yongze Li, Fubo Liu, Jianwen Zhao
Summary: Wearable soft strain sensors are commonly used to measure human joint motion in various fields, but the accuracy is low for multi-degree-of-freedom (multi-DOF) joints due to the coupled effect of wearable sensor signals from all joint submotions. This study proposes a decoupling method that transforms the measurement into the forward kinematic analysis of an equivalent mechanism, improving the precision of wearable sensor information on multi-DOF joints. Experimental results show strong adaptability of the method to different human motions with minimal dynamic measurement errors.
IEEE SENSORS JOURNAL
(2023)
Article
Computer Science, Software Engineering
He Chen, Hyojoon Park, Kutay Macit, Ladislav Kavan
Summary: The new method captures detailed human motion, outputs precise point coordinates with unique labels, and relies on 2D images only. It utilizes a special motion capture suit and neural networks to process images, making it easy to replicate and deploy. The method can accurately capture various human poses, including challenging motions like yoga and gymnastics.
ACM TRANSACTIONS ON GRAPHICS
(2021)
Article
Chemistry, Multidisciplinary
Wei Si, Xiaojing Lin, Liwei Wang, Gensheng Wu, Yin Zhang, Yunfei Chen, Jingjie Sha
Summary: This study theoretically reports a DNA-tracked nanovehicle that can move on a solid-state surface using molecular dynamics simulations. The nanovehicle is assembled with a graphene membrane as the chassis and circular ssDNAs as the wheels. By inducing electroosmotic flows through independently charged nanopores, controlled rotary motion is achieved, allowing the nanovehicle to move linearly and make turns. This design enables access to almost anywhere in the human body, leading to breakthroughs in nanoscale surgery and drug delivery. It enriches the nanorobot family and provides a new approach for nanovehicle design.
Article
Chemistry, Physical
Benedikt B. Straub, Henrik Schmidt, Peyman Rostami, Franziska Henrich, Massimiliano Rossi, Christian J. Kaehler, Hans-Jurgen Butt, Gunter K. Auernhammer
Summary: The dynamics of wetting and dewetting are determined by the velocity field near contact lines. Surfactants have a drastic effect on drop dynamics even at concentrations much lower than the critical micelle concentration. Marangoni stresses play a key role in altering flow dynamics near the receding contact line, showcasing the ubiquitous impact of surfactants on technical and natural dewetting processes.
