Abstract Silver is well known for its antibacterial properties and low toxicity, and it is currently widely used both in the form of ions and of nanoparticles in many diverse products. One-dimensional silver nanowires (AgNWs) have the potential to further enhance the properties of nanosilver-containing products, since they appear to have higher antimicrobial efficacy and lower cytotoxicity. While they are widely used in optics and electronics, more studies are required in order to better understand their behavior in the biological environment and to be able to advance their application in uses such as wound healing, surface coating and drug delivery. https://www.mdpi.com/2076-3417/8/5/673

AbstractScientific and technological advances in transparent conductive electrodes improve the heating performance of flexible transparent film heaters (TFHs), which can be utilized for various applications as defrosters and heaters. To achieve high performance as well as practical TFHs, several conditions, such as high optical transmittance, low electrical resistance, heating uniformity, and operational stability in various environmental conditions should be satisfied. However, due to the trade-offs between optical transmittance and electrical resistance, it is not easy to fulfill all the requirements concurrently. Here we report flexible TFHs using a ternary composite of silver nanowire (AgNW), conducting polymer (i.e., poly[3,4-ethylenedioxythiophene]:polystyrene sulfonate [PEDOT:PSS]), and a thin conductive oxide (i.e., indium tin oxide [ITO]) layer, exhibiting higher performance in terms of the maximum heating temperature (>110 °C), operational stability, mechanical flexibility, and optical transmittance (95% at 550 nm), compared to pristine AgNW-based TFHs. We also demonstrated the stable operation of the AgNW–PEDOT:PSS/ITO TFHs soaked in water, showing excellent environmental stability. To analyse the fundamental mechanisms for the improved performance of the AgNW–PEDOT:PSS/ITO TFHs, we investigated the progress of joule heating using a device simulator, and found that the improvement originated not only from reduced electrical resistance but also from enhanced heat dissipation with PEDOT:PSS and ITO. We anticipate that our analysis and results will be helpful for further development of practical flexible TFHs.https://pubs.rsc.org/en/content/articlepdf/2019/ra/c9ra00341j

AbstractThe advent of mobile communication has made antennas omnipresent. Conventional methods of antenna manufacturing cannot address the growing demands for novel applications requiring transparent and flexible antennas. In this paper, transparent silver nanowire films are studied with respect to their high‐frequency properties. Transparent silver nanowire (AgNW)‐based antennas that are screen printed onto flexible polyethylene terephthalate (PET) substrate are reported. Transparent films with a low sheet resistance of 8.5 Ω sq−1 and a high transmittance of 85%, at a wavelength of 550 nm, are characterized as bowtie antennas with a radiation efficiency of 52%. This combination of efficiency and transmittance rivals the ones that are commonly reported for conductive‐oxide based transparent antennas and paves their use for any automobile window, liquid crystal display, or organic‐light‐emitting‐diode display.https://onlinelibrary.wiley.com/doi/abs/10.1002/adom.201900995 

Researchers at Oregon State University have developed an improved technique for using magnetic nanoclusters to kill hard-to-reach tumors.Once injected into the tumor, the nanoparticles are exposed to an alternating magnetic field, or AMF. This field causes the nanoparticles to reach temperatures in excess of 100 degrees Fahrenheit, which causes the cancer cells to die.But for some cancer types such as prostate cancer, or the ovarian cancer used in the Oregon State study, direct injection is difficult. In those types of cases, a "systemic" delivery method—intravenous injection, or injection into the abdominal cavity—would be easier and more effective.The challenge for researchers has been finding the right kind of nanoparticles—ones that, when administered systemically in clinically appropriate doses, accumulate in the tumor well enough to allow the AMF to heat cancer cells to death.Olena Taratula and Oleh Taratula of the OSU College of Pharmacy tackled the problem by developing nanoclusters, multiatom collections of nanoparticles, with enhanced heating efficiency. The nanoclusters are hexagon-shaped iron oxide nanoparticles doped with cobalt and manganese and loaded into biodegradable nanocarriers.OSU researchers Olena and Oleh Taratula's work with magnetic nanoclusters as cancer therapy was featured on the cover of ACS Nano. Credit: Tetiana KorzunFindings were published in ACS Nano."There had been many attempts to develop nanoparticles that could be administered systemically in safe doses and still allow for hot enough temperatures inside the tumor," said Olena Taratula, associate professor of pharmaceutical sciences. "Our new nanoplatform is a milestone for treating difficult-to-access tumors with magnetic hyperthermia. This is a proof of concept, and the nanoclusters could potentially be optimized for even greater heating efficiency."The nanoclusters' ability to reach therapeutically relevant temperatures in tumors following a single, low-dose IV injection opens the door to exploiting the full potential of magnetic hyperthermia in treating cancer, either by itself or with other therapies, she added."It's already been shown that magnetic hyperthermia at moderate temperatures increases the susceptibility of cancer cells to chemotherapy, radiation and immunotherapy," Taratula said.The mouse model in this research involved animals receiving IV nanocluster injections after ovarian tumors had been grafted underneath their skin."To advance this technology, future studies need to use orthotopic animal models—models where deep-seated tumors are studied in the location they would actually occur in the body," she said. "In addition, to minimize the heating of healthy tissue, current AMF systems need to be optimized, or new ones developed."

Reducing investment costs, limiting the use of pesticides causing environmental pollution, disease-free plants, good product quality and ensuring food safety and hygiene, increasing profits by more than 20% .. These are practical benefits from the application of fruit nanotechnology on the Hung Yen farmers' interest.Nanotechnology has been applied to growing longan in Hung Yen. Illustration: Vũ Sinh/TTXVNThis technology has been supported by Hung Yen Department of Agriculture and Rural Development in 5 models of growing longan and citrus in Kim Dong, Tien Lu and Hung Yen districts.Models have attracted nearly 100 gardening households to participate. People have been trained, instructed to use nano preparations, measures to care for labels and oranges and supported a part of nano-products and fertilizers.According to Mr. Nguyen Quang Tin and the orange growing households in Dong Thanh commune (Kim Dong), compared to the traditional method of preventing and eliminating pests, the application of S500 nano product brings outstanding advantages, high efficiency in the room, except for ulcer disease, fruit scars, fungal and bacterial prevention; Orange peels are berry, dark green, bright, when ripe, yellow, beautiful code, time is faster. The investment cost for each hectare is less than 7 million VND, the profit increases by more than 20 million VND compared to the production output outside the model.Mr. Nguyen Van Trang, Deputy Director of Hung Yen Department of Agriculture and Rural Development said: Through monitoring and evaluation, models of application of nano preparations to prevent pests and diseases on fruit trees can replacing chemical pesticides to destroy pathogens, fruit cracking, fruit scar disease and fruit ulcers. Nano silver, copper is a clean, non-toxic product, does not cause environmental pollution, does not cause toxic residues on agricultural products, safe to use. From this effect, Hung Yen province will continue to deploy on a large scale.

This morning, the Asia Pacific stock market plunged in red because of the escalating US-China trade tension. Last night, US President Donald Trump announced a tax increase of US $ 200 billion of Chinese goods to 25% from Friday, an unexpected move when the trade agreement between the two countries is said to be "optimistic". .In China, the Shanghai Composite and Shenzhen Component indexes all fell more than 3%, while Shenzhen Composite plunged about 4%. In Australia, the ASX 200 index also lost 1.25% because most sectors fell. The MSCI Asia - Pacific Index also decreased by 1.53% as of 8:30 am this morning. Today, the Korean and Japanese markets have not been affected because of closed holidays.Meanwhile, in the US market, the future DJIA index also lost over 500 points from last night. The future S&P 500 and the future Nasdaq 100 also dropped to double digits when the market opened today.Last night, Mr. Trump announced on Twitter that it will raise taxes to 25% with 200 billion USD of Chinese goods from the current 10%. This policy will be applied from May 10. Besides, he also threatened to apply 25% to 325 billion USD of Chinese goods. Right after Trump's statement, this morning, China is also considering canceling trade talks with the US this week, according to CNBC sources."Trump's statement expressed dissatisfaction with China's speed of trade negotiations in the context of Beijing's efforts to renegotiate," said Rodrigo Catril, a senior foreign exchange strategist at National Australia Bank. According to Catril, an increase in tariffs will be bad news for risky assets and threaten the prospect of global recovery.

This morning, the Asia Pacific stock market plunged in red because of the escalating US-China trade tension. Last night, US President Donald Trump announced a tax increase of US $ 200 billion of Chinese goods to 25% from Friday, an unexpected move when the trade agreement between the two countries is said to be "optimistic".In China, the Shanghai Composite and Shenzhen Component indexes all fell more than 3%, while Shenzhen Composite plunged about 4%. In Australia, the ASX 200 index also lost 1.25% because most sectors fell. The MSCI Asia - Pacific Index also decreased by 1.53% as of 8:30 am this morning. Today, the Korean and Japanese markets have not been affected because of closed holidays.Meanwhile, in the US market, the future DJIA index also lost over 500 points from last night. The future S&P 500 and the future Nasdaq 100 also dropped to double digits when the market opened today.Last night, Mr. Trump announced on Twitter that it will raise taxes to 25% with 200 billion USD of Chinese goods from the current 10%. This policy will be applied from May 10. Besides, he also threatened to apply 25% to 325 billion USD of Chinese goods. Right after Trump's statement, this morning, China is also considering canceling trade talks with the US this week, according to CNBC sources."Trump's statement expressed dissatisfaction with China's speed of trade negotiations in the context of Beijing's efforts to renegotiate," said Rodrigo Catril, a senior foreign exchange strategist at National Australia Bank. According to Catril, an increase in tariffs will be bad news for risky assets and threaten the prospect of global recovery.

This morning, the Asia Pacific stock market plunged in red because of the escalating US-China trade tension. Last night, US President Donald Trump announced a tax increase of US $ 200 billion of Chinese goods to 25% from Friday, an unexpected move when the trade agreement between the two countries is said to be "optimistic". .In China, the Shanghai Composite and Shenzhen Component indexes all fell more than 3%, while Shenzhen Composite plunged about 4%. In Australia, the ASX 200 index also lost 1.25% because most sectors fell. The MSCI Asia - Pacific Index also decreased by 1.53% as of 8:30 am this morning. Today, the Korean and Japanese markets have not been affected because of closed holidays.Meanwhile, in the US market, the future DJIA index also lost over 500 points from last night. The future S&P 500 and the future Nasdaq 100 also dropped to double digits when the market opened today.Last night, Mr. Trump announced on Twitter that it will raise taxes to 25% with 200 billion USD of Chinese goods from the current 10%. This policy will be applied from May 10. Besides, he also threatened to apply 25% to 325 billion USD of Chinese goods. Right after Trump's statement, this morning, China is also considering canceling trade talks with the US this week, according to CNBC sources."Trump's statement expressed dissatisfaction with China's speed of trade negotiations in the context of Beijing's efforts to renegotiate," said Rodrigo Catril, a senior foreign exchange strategist at National Australia Bank. According to Catril, an increase in tariffs will be bad news for risky assets and threaten the prospect of global recovery.