![]() Although Muller cannot see the targets, he can detect where the “dodgeballs” end up. The dodgeballs are electrons, and their targets are individual atoms. Cornell physicist David Muller likens the technique to playing dodgeball against opponents who are standing in the dark. The beam moves infinitesimally as the electrons are fired, so they hit the sample from slightly different angles-sometimes they pass through cleanly other times they collide with atoms and bounce around inside the sample before exiting. It involves shooting a beam of electrons, about a billion per second, at a target material. The scientists obtained the image using a technique called electron ptychography. Their imaging process could help develop materials for designing more powerful and efficient phones, computers and other electronics, as well as longer-lasting batteries. To create it, Cornell University researchers captured a sample from a crystal in three dimensions and magnified it 100 million times, doubling the resolution that earned the same scientists a Guinness World Record in 2018. CN CN201410453650.Behold the highest-resolution image of atoms ever taken.Single-layer nanogold surface-enhanced Raman activity substrate and preparation method thereof Method for detecting BHA (butylated hydroxyanisole) in edible oil and plastic packages by laser nanometer Raman spectroscopy Surface enhanced Raman spectroscopy detection method of bisphenol A Systems and methods for food safety detection Method for detecting benzoic acid in milk based on surface enhanced Raman spectroscopyĬitations (4) * Cited by examiner, † Cited by third party Publication number Method for identifying whether one or more chemicals of theophylline, caffeine and theobromine are added into traditional Chinese medicines for relieving cough and asthma Method for detecting drugs in human body fluids based on surface enhanced Raman spectrum technology Method for detecting aspartame in food through raman enhancement spectrum Method for detecting caffeine in foods by virtue of enhanced Raman spectrumĪpplications Claiming Priority (1) Application Numberįamily ID=52083785 Family Applications (1) Application NumberĬited By (4) * Cited by examiner, † Cited by third party Publication number Priority Applications (1) Application Number CN201410453650.1A Method for detecting caffeine in foods by virtue of enhanced Raman spectrum the method for utilizing Raman enhanced spectrum to detect caffeine in food according to claim 1, it is characterized in that: the described detection concrete operations of step (3) are: after getting liquid to be measured and Raman Contrast agent and mixing with the volume ratio of 1:1 ~ 1:10, regulator solution salinity to 0.01 ~ 0.05 mol/L, regulator solution pH to 1 ~ 5, laser is assembled, and carries out Raman spectrum detection With the collection of illustrative plates contrast of standard items, carry out qualitative discrimination. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Application filed by Fuzhou University filed Critical Fuzhou University Priority to CN201410453650.1A priority Critical patent/CN104198460A/en Publication of CN104198460A publication Critical patent/CN104198460A/en Status Pending legal-status Critical Current LinksĤ. ![]() Original Assignee Fuzhou University Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) Inventor 杨黄浩 宋良 陈金凤 张晓龙 田中群 Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Pending Application number CN201410453650.1A Other languages Chinese ( zh) Google Patents Method for detecting caffeine in foods by virtue of enhanced Raman spectrumĭownload PDF Info Publication number CN104198460A CN104198460A CN201410453650.1A CN201410453650A CN104198460A CN 104198460 A CN104198460 A CN 104198460A CN 201410453650 A CN201410453650 A CN 201410453650A CN 104198460 A CN104198460 A CN 104198460A Authority CN China Prior art keywords raman caffeine detection measured contrast agent Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents CN104198460A - Method for detecting caffeine in foods by virtue of enhanced Raman spectrum CN104198460A - Method for detecting caffeine in foods by virtue of enhanced Raman spectrum
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