People

“Accelerating Digital Transformation and Establishing a New Business Model” is an Key Factor to Taiwan's Industrial Innovation in the Post-pandemic Era [ 下載 PDF ]

Claire Lin

Atmospheric-Pressure Plasma Technology and Its Applications

Atmospheric Pressure Plasma Technology Applications for the Polymer Industry [ 下載 PDF ]

Chia-Chiang Chang

Atmospheric plasma technology has been widely used in various industries related to polymer materials. This article focuses on exemplifying one of the latest application trends, which is the surface treatment of materials in the shoe industry; this article is divided into principles, application opportunities, and future challenges are shared one by one, hoping to encourage outstanding new generations to continue to invest, and to reach the next level.

Applying Low-temperature Atmospheric-pressure Plasma to Cancer Therapy, Protein Coating, and Tooth Therapy [ 下載 PDF ]

Yun-Chien Cheng, Tzu-Ying Chen

In recent years, the low-temperature atmospheric-pressure plasma (LTAPP) is applied to medical applications. It has several advantages including reactive oxygen species (ROS) generation, gaseous, low side effect, portable, and cost-effective, so it is very suitable for the dental or dermatology therapy. This article introduced three LTAPP medical applications. First is for tooth bleaching, the bleaching efficacy of LTAPP is better than H₂O₂ jet and the harm to enamel is less. Second is aerosol-assisted atmospheric-pressure plasma deposition. It takes about 5 mins and needs no chemicals to trap protein on the substrate for biosensor fabrication. Third is applying LTAPP for management of malignant pleural effusion. The result showed that, after plasma treatment, the CL1-5 cancer cell is inhibited, while the benign cells were not significantly harmed.

Characteristics of Extended Atmospheric Pressure Plasma Jets and the Analysis of Their Bactericidal Circles [ 下載 PDF ]

Jang-Hsing Hsieh, Yi-Jing Wei, Su-Chien Chang, Pei-Lin Liu

Recently, atmospheric plasma technology has been found to have a huge potential and bright future in plasma medicine. In practice, the flexibility and extendibility of plasma jets are critical in many of the bio-medical applications. In this study, silicone tubes were used to extend the length of plume. Silicone was chosen because it is a non-toxic, biocompatible, highly elastic material. A customized atmospheric pressure plasma jet (APPJ) equipped with unipolar pulse power supply was used to generate He plasma for the present study. The plumes were analyzed by OES as functions of tube length and working distance in order to realize the distribution of OH and O radicals. The results show that the intensity ratio of OH/He and O/He in the discharge decreased with the increase of silicone tube length. In the study of working distance, With the increase of tube length, the decrease of OH intensity was found to be more significant than O’s. With the increase of working distance, the combination of OH+O intensities showed a peak appearing at 1.5-2 cm. Accordingly, the bactericidal efficiency was influenced. In order to realize the formation of bactericidal circle pattern, ICCD camera and smoke flow were used. It can be concluded that the distribution of OH radical is the main reason that caused dual circles.

The Setup of Automatic Atmospheric Pressure Plasma System for the Odor Removal on the Medical Facial Masks [ 下載 PDF ]

Yu-Lin Kuo, Ying-Sui Sun, Ming-Hua Ho, Hsing-Ju Sheng, Song-Yu Chen, Jhao-Yu Guo, Hsien-Po Wang, Chi-Liang Ko

According to the medial report made by The New England Journal of Medicine, the COVID-19 coronavirus can survive on the outer side of solid substrates for several days, depending on the types of substrates. Several literatures dealing with killing the bacteria or virus were referred using dry/wet thermal method, high pressure/high temperature chamber, UVC irradiation, sodium hypochlorite water, and ethyl alcohol. However, the materials used in facial masks are not thermal-durable, which will be damaged on the hydrophobic outer surface and electrostatic filter layer and degrade the function of facial masks. We reported a feasible method treating the facial masks by irradiating the atmospheric pressure plasma (APP), which was also integrated with the robotic arm and automation control unit. The optimization process of automated APP system using compressed dry air as the working gas was proposed. The results demonstrated the sterilizing effect and removal of odors on facial masks without any physical damages were feasibly achieved. APP system has many potentials on treating objects for biomedical applications, and it also offers the advantages such as cost-effectiveness using air as working gas and low temperature process without visible damages on treated objects.

Atmospheric Pressure Plasma for Rapid Mass Spectrometry Detection [ 下載 PDF ]

Cheng-Horn Chiang, Chun-Yi Chen, Che-Hsin Lin

Mass spectrometry is a rapid growth technique for semi-quantification detection of various molecules without using the delicate sample preparation processes. In general, it is essential to charge the sample molecules prior to mass analyzing with the mass spectrometer. Therefore, the atmospheric pressure plasma source is an ideal ion source to charge the sample molecules for mass spectrometry detection since no vacuum chamber is required to produce the charged ions. However, this method is usually good for detecting the molecules with low-polarity or nonpolarity. The detection performance for analyzing polar molecules which dissolved in the liquid samples is limited. This research develops an innovative co-axial ion source composed of dual ion sources including an atmospheric pressure plasma and an electrospray ion sources for for rapid MS detection of pesticides. With this approach, polar and non-polar molecules can be simultaneously detected with the mass spectrometer.

Compact Ionospheric Probe [ 下載 PDF ]

Chi-Kuang Chao

Compact ionospheric probe (CIP) is an all-in-one plasma sensor developed by National Central University and is capable of measuring ion concentration, velocity, and temperature like advanced ionospheric probe (AIP) onboard FORMOSAT-5 satellite. However, CIP has a smaller dimension (0.7 U), mass (433 g), and power consumption (3.48 W) than AIP and can be installed on CubeSat to monitor space communication and navigation outages caused by ionospheric plasma density irregularities.

Columm

Laser Surface Modification Technology Applied for the Sensor Device Planar Thermal Element Fabrication [ 下載 PDF ]

Rou-Jhen Chen, Yi-Cheng Lin, Chih-Chung Yang, Yu-Jen Hsiao, Wen-Tse Hsiao

With the rapid development of applications in emerging fields such as cloud, communications, wearable devices, and the Internet of Things industry, sensor components are widely used. The mixed functional thin film materials have the properties of low sheet resistance (< 100 ohm/square) and low power consumption; therefore, it’s suitable for the production of the sensor devices. This article uses the functional thin film materials- transparent conductive oxide, silver nanowire as network mixed the transparent conductive films and transparent conductive polymer (3, 4-ethylene dioxythiophene, PEDOT; Polystyenesulfonic Acid, PSS; PEDOT: PSS) to fabricate thermal components for sensor device applications, as a reference for readers to develop sensor devicerelated products in the future.

On-site Testing Laboratory for Photovoltaic Module [ 下載 PDF ]

Shang-Ya Wu, Teng-Chun Wu, Si-Xian Li, Cheng-Yu Peng

The Center for Measurement Standards of ITRI is going to expand the indoor testing laboratory to on-site testing service of non-fixed location of mobile facilities according to accreditation photovoltaic program for testing laboratory of TAF ISO/IEC 17025:2017. The mobile laboratory with on-site testing is developed to the inspections of photovoltaic module product in the outdoor field. The service will approach the on-site testing with 3-items IEC 61215:2021 of 4.1- 4.3 (TAF CNLA T20) and 2-items image-detection services with the standard testing procedures of thermographic inspection of IEC 62446-3 and electroluminescence inspection of IEC 60904-13. The on-site testing with high mobility can be implemented by sampling check, check on delivery, routine inspection and valuation inventory purposes. The On-site inspection has the benefits of saving workers from disassembly, reducing handling losses, and decreasing transportation costs. The technical comparison between outdoor on-site testing and indoor testing laboratory represents the operation and guideline for method selection, verification and validation, including the operating procedures of equipment, the environmental conditions of testing and the handling of test pieces and calibration pieces. The on-site photovoltaic testing laboratory with high mobility is becoming the first mobile testing facility in Taiwan.