NPL researchers have synthesised a security ink that emits intense red colour due to fluorescence when exposed to 254 nm wavelength UV and emits green colour due to phosphorescence soon after the UV source is turned off. A novel security ink that emits intense red colour when exposed to 254 nm wavelength UV and emits … Continue reading NPL synthesises novel security ink
Physics
IISc team submits more evidence of superconductivity
In a new preprint posted in arXiv on June 5, the IISc team has provided evidence of signatures of critical current — the current at which the superconductor is no longer stable and becomes resistive. The critical current data is a strong indicator of superconductivity. Further evidence of possible superconductivity in gold-silver nanostructures has been … Continue reading IISc team submits more evidence of superconductivity
IISc team provides video evidence of superconductivity at room temperature
IISc researchers have posted a video evidence of diamagnetism causing magnetic levitation at ambient temperature and pressure. In the video, the nanoparticles made of gold-silver mixture seen inside a test tube can be seen getting repelled when brought close to a permanent magnet. On May 24, three days after posting a revised article in arXiv, … Continue reading IISc team provides video evidence of superconductivity at room temperature
Finally, IISc team confirms breakthrough in superconductivity at room temperature
The revised article posted in arXiv on May 21 by IISc researchers led by Prof. Anshu Pandey strengthens the claim of achieving superconductivity at ambient temperature and pressure. About the identical noise in measurements made under different conditions, the researchers say it suggests a possible physical origin related to the sample as opposed to instrument … Continue reading Finally, IISc team confirms breakthrough in superconductivity at room temperature
Jamia researchers develop ultrasensitive quantum thermometer
Jamia Millia Islamia researchers have developed a highly sensitive quantum thermometer using graphene quantum dots. The thermometer can measure micro Kelvin changes in temperature, and has a quick response time of about 300 milliseconds to register a change in temperature from 27 degree C to -196 degree C. Researchers at Jamia Millia Islamia, New Delhi … Continue reading Jamia researchers develop ultrasensitive quantum thermometer
NPL’s device produces high quality, single-layer graphene
NPL researchers have designed a low-cost, low-pressure chemical vapour deposition (LPCVD) device that allows high quality, single-layer graphene measuring 4 inches in length and 2 inches in width to be grown. The quality of the single-layer graphene is metrology-grade, and can be used in next-generation quantum devices. Researchers at Delhi’s National Physical Laboratory (CSIR-NPL) have … Continue reading NPL’s device produces high quality, single-layer graphene
Retraction saga: IIT Dhanbad faculty learnt to reuse published images during their doctoral programme
Rashmi Madhuri and Prashant Sharma of IIT Dhanbad have 15 and 19 papers respectively listed on Pubpeer website. These papers have been published while they were doing their doctoral programme at different institutes. Like their two dozen retracted papers, these papers too have serious issues with published images being reused to represent different samples or … Continue reading Retraction saga: IIT Dhanbad faculty learnt to reuse published images during their doctoral programme
Two dozen papers by IIT Dhanbad faculty retracted so far, many more still under a cloud
Rashmi Madhuri and Prashant Sharma, Assistant Professors at IIT Dhanbad, have so far collected over 24 retractions. And many more papers with similar problem of image duplication have been listed on Pubpeer website. The investigation by the institute is still under way and will probably be completed by March-April 2019. Indian Institute of Technology (Indian … Continue reading Two dozen papers by IIT Dhanbad faculty retracted so far, many more still under a cloud
Podcast: IISc superconductivity claim faces another jolt
Satishchandra Ogale at IISER Pune explains that though the gold-silver thin films synthesised by his team is different from IISc's Au-Ag nanosized films and pellets and the microstructure is also not the same, no signature of superconductivity in either resistivity or magnetism measurements was seen. This is yet another jolt to IISc claims after MIT … Continue reading Podcast: IISc superconductivity claim faces another jolt
IISc superconductivity claim gets another jolt, IISER Pune finds no superconductivity in Au/Ag films
After Brian Skinner, a physicist at the Massachusetts Institute of Technology, raised a red flag after noticing nearly identical noise in two presumably independent measurements in IISc superconductivity study, IISER Pune now finds no superconductivity in gold-silver thin films. Though thin films synthesised by the IISER Pune team is different from IISc's nanosized films and … Continue reading IISc superconductivity claim gets another jolt, IISER Pune finds no superconductivity in Au/Ag films
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