Characteristics of Optical Silicone Tactile Sensor

The main objective of this research work is to anal yze the characteristics of a newly developed optical tactile sensor for sensing surface hardness. Many optical tactile sensors are bulky in size and lack of dexterity for biomedical applications. Therefore, this tactile sensor is design relative small in size and flexible for easier insertion in endoscopic surgery application. The characteristics of the tactile sensor are calibrated with respect to changes in the diameter, area and perimeter of a silicon tactile sensor subjected to normal forces applied at the point of interaction. A surface exploration computer algorithm to obtain the sensing information was developed to analyse the characteristic of the optical tactile sensor. The overall image anal ysis technique involves the following main stages: image acquisition (capturing of images), processing (thresholding, noise filtering and boundary detection ) and evaluation (force measurement). The measured forces were then compared to the actual forces to determine the accuracy of the tactile sensor’s characteristics. The results showed tluit the sensing characteristic with respect to changes in perimeter of the tactile sensor is more accurate compared to the other sensing characteristics. The outcomes of this research shows that the functionality of the developed new image anal ysis computer algorithm coupled with the silicone tactile sensor is suitable for biomedical applications such as in endoscopic surgery for measurement of tissue softness.

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A Coil-Based Tactile Sensor for Material Discrimination (1) and Contact Force Measurement: An Application of Multifunctional Sensing Technique

IEEJ Transactions on Sensors and Micromachines ◽

10.1541/ieejsmas.125.15 ◽

2005 ◽

Vol 125 (1) ◽

pp. 15-20

Author(s):

Zhiyu Chi ◽

Katsunori Shida

Keyword(s):

Contact Force ◽

Force Measurement ◽

Tactile Sensor ◽

Material Discrimination

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Formation of Speech Culture of Students of Training Courses for Foreign Specialists of the Siberian Law Institute as an Object of Research Work

Общество социология психология педагогика ◽

10.24158/spp.2020.10.17 ◽

2020 ◽

pp. 95-98

Author(s):

Viktoriya Vladimirovna Zorina

Keyword(s):

Foreign Students ◽

Research Work ◽

Scientific Work ◽

Educational Organizations ◽

Anal Ysis ◽

Is Research ◽

Regional Component ◽

Training Courses ◽

Internal Affairs ◽

Research Period

One of the accreditation indicators of a modern Uni-versity is research work. The paper presents an anal-ysis of research carried out at the Department of foreign and Russian languages of the Siberian Law Institute of the Ministry of Internal Affairs of Russia on the problem of forming the speech culture of foreign students. The research period is 2018–2020. The topics are indicated, the stages of research are briefly described, and the prospects for scientific work are determined. Research work was carried out on the following topics: “Teaching Russian speech etiquette to students of training courses for foreign specialists in educational organizations of the Minis-try of Internal Affairs of Russia”; “Formation of speech culture of students of training courses for foreign specialists, taking into account the regional component”. The presented generalization of the research work made it possible to verify the rele-vance of the chosen direction and the need for fur-ther continuation of the work.

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A Flexible Tactile Sensor Based on Porous Graphene Sponge for Tiny Force Measurement

Volume 1: Additive Manufacturing; Bio and Sustainable Manufacturing ◽

10.1115/msec2018-6366 ◽

2018 ◽

Author(s):

Lingfeng Zhu ◽

Yancheng Wang ◽

Xin Wu ◽

Deqing Mei

Keyword(s):

Force Measurement ◽

High Sensitivity ◽

Tactile Sensor ◽

Tactile Sensors ◽

Force Detection ◽

Pressure Sensing ◽

Porous Graphene ◽

Graphene Sponge ◽

Healthcare Monitoring ◽

Working Principle

Flexible tactile sensors have been utilized for epidermal pressure sensing, motion detecting, and healthcare monitoring in robotic and biomedical applications. This paper develops a novel piezoresistive flexible tactile sensor based on porous graphene sponges. The structural design, working principle, and fabrication method of the tactile sensor are presented. The developed tactile sensor has 3 × 3 sensing units and has a spatial resolution of 3.5 mm. Then, experimental setup and characterization of this tactile sensor are conducted. Results indicated that the developed flexible tactile sensor has good linearity and features two sensitivities of 2.08 V/N and 0.68 V/N. The high sensitivity can be used for tiny force detection. Human body wearing experiments demonstrated that this sensor can be used for distributed force sensing when the hand stretches and clenches. Thus the developed tactile sensor may have great potential in the applications of intelligent robotics and healthcare monitoring.

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Experimental investigation and empirical modeling for corrosion rate prediction of biodegradable zinc based composite considering the effect of constituent materials

Proceedings of the Institution of Mechanical Engineers Part C Journal of Mechanical Engineering Science ◽

10.1177/09544062211055658 ◽

2021 ◽

pp. 095440622110556

Author(s):

Dayanidhi Krishana Pathak ◽

Pulak Mohan Pandey

Keyword(s):

Mechanical Properties ◽

Corrosion Rate ◽

Biomedical Applications ◽

Microwave Sintering ◽

Research Work ◽

Simulated Body Fluid Solution ◽

Corrosion Current ◽

Essential Elements ◽

Empirical Modeling ◽

Corrosion Properties

Biodegradable zinc (Zn) has shown great potential in the area of biomedical applications. Though, the mechanical properties are decisive for the use of Zn for orthopedic and cardiovascular applications. Consequently, one needs to focus on improving the mechanical properties of Zn for its suitability in biomedical applications. Alloying of essential elements of the human body resulted in enhancement of Zn’s mechanical properties in recent years. The corrosion rate of pure Zn is ideal; however, the addition of other elements has resulted in a loss of its ideal corrosion rate. The inclusion of hydroxyapatite (HA) and iron (Fe) in Zn has also been reported in improving the mechanical properties. Hence, a need is raised for the development of a model which can predict the corrosion rate after adding HA along with Fe in Zn. In this research work, empirical based modeling is proposed to predict the corrosion rate, which incorporates the outcome of addition of Fe and HA in Zn. The Zn based materials were fabricated with the help of microwave sintering for developing the empirical model. The corrosion properties of the materials were assessed through a potentiodynamic polarization test in a simulated body fluid solution. The enhanced corrosion rate was attained with the rise in HA (wt%) and Fe (wt%) in Zn. An empirical correlation was established between the influencing controlling parameters (i.e., corrosion current, equivalent weight, and material density) of corrosion rate. Confirmation experiments were conducted to validate the developed model, and the highest error of 6.12% was obtained between the experimental and predicted values exhibiting the efficaciousness of the proposed model.

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Bioceramics: from bone substitutes to nanoparticles for drug delivery

Pure and Applied Chemistry ◽

10.1515/pac-2018-0505 ◽

2019 ◽

Vol 91 (4) ◽

pp. 687-706 ◽

Cited By ~ 4

Author(s):

María Vallet-Regí

Keyword(s):

Drug Delivery ◽

Biomedical Applications ◽

Drug Delivery Systems ◽

Bone Repair ◽

Research Team ◽

Research Work ◽

Bone Substitutes ◽

Delivery Systems ◽

Smart Drug ◽

Smart Drug Delivery

Abstract Since the second half of the 20th century, bioceramics are used for bone repair and regeneration. Inspired by bones and teeth, and aimed at mimicking their structure and composition, several artificial bioceramics were developed for biomedical applications. And nowadays, in the 21st century, with the increasing prominence of nanoscience and nanotechnology, certain bioceramics are being used to build smart drug delivery systems, among other applications. This minireview will mainly describe both tendencies through the research work carried out by the research team of María Vallet-Regí.

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Recent Applications of Nanomaterials in Prosthodontics

Journal of Nanomaterials ◽

10.1155/2015/408643 ◽

2015 ◽

Vol 2015 ◽

pp. 1-11 ◽

Cited By ~ 13

Author(s):

Wei Wang ◽

Susan Liao ◽

Yuhe Zhu ◽

Ming Liu ◽

Qian Zhao ◽

...

Keyword(s):

Biomedical Applications ◽

Surface Hardness ◽

Filler Loading ◽

The Other ◽

Research Progress ◽

Polymerization Shrinkage ◽

Other Hand ◽

Micron Size

In recent years, lots of researches have been launched on nanomaterials for biomedical applications. It has been shown that the performances of many biomaterials used in prosthodontics have been significantly enhanced after their scales were reduced by nanotechnology, from micron-size into nanosize. On the other hand, many nanocomposites composed of nanomaterials and traditional metals, ceramics, resin, or other matrix materials have been widely used in prosthodontics because their properties, such as modulus elasticity, surface hardness, polymerization shrinkage, and filler loading, were significantly increased after the addition of the nanomaterials. In this paper, the latest research progress on the applications of nanometals, nanoceramic materials, nanoresin materials, and other nanomaterials in prosthodontics was reviewed, which not only gives a detailed description of the new related investigations, but also hopefully provides important elicitation for future researches in this field.

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Pseudo Bayesian and Linear Regression Global Thresholding

International Journal of Electronics and Telecommunications ◽

10.2478/v10177-010-0008-1 ◽

2010 ◽

Vol 56 (1) ◽

pp. 63-72

Author(s):

Khalid Aboura

Keyword(s):

Image Analysis ◽

Linear Regression ◽

Biomedical Applications ◽

Engineering Problem ◽

Important Task ◽

Computer Algorithm ◽

Gray Scale ◽

Black And White ◽

Gray Scale Image ◽

Global Thresholding

Pseudo Bayesian and Linear Regression Global ThresholdingClassification is an important task in image analysis. Simply recognizing an object in an image can be a daunting step for a computer algorithm. The methodologies are often simple but rely heavily on the thresholding of the image. The operation of turning a color or gray-scale image into a black and white image is a determining step in the effectiveness of a solution. Thresholding methods perform differently in various problems where they are often used locally. Global thresholding is a difficult task in most problems. We highlight a pseudo Bayesian and a linear regression global thresholding methods that performed well in an engineering problem. The same approaches can be used in biomedical applications where the environment is better controlled.

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