Time crystals, life as a tech founder and demons as teachers: the April 2022 issue of Physics World magazine is now out

01 Apr 2022 Matin Durrani

Google’s Pedram Rousham explores the quest for elusive “time crystals”, Lia Li outlines her ambitions as tech start-up founder and Robert P Crease looks at how demons can help teach scienc

Time crystals: in search of a new phase of matter

If there’s one thing you can be sure of here at Physics World, it’s that any coverage of “time crystals” gets lapped up by readers.

With that in mind, the cover feature of the new April 2022 issue of Physics World magazine, is sure to intrigue you.

 

Astronomers launch new asteroid-classification system based on animal sizes

01 Apr 2022

***We hope you enjoyed our April Fool’s Day joke. You didn’t honestly believe any of this nonsense did you?***

Animal magic: Asteroids and meteoroids may only be classified in terms of a fixed range of animal sizes, but giraffes are excluded. (Courtesy: iStock/naeblys)

A new system for classifying the sizes of small planetary objects using animals has been launched by the European Space Agency (ESA) in a bid to clear up misconceptions introduced after an asteroid was reported to be “half the size of a giraffe”. Senior officials at the Paris-based agency unveiled the plan in response to claims that the giraffe comparisons were undermining serious astronomical research.

 

Neutron capture destroys tumours from the inside, dead stars are born again, commercializing quantum sensors

31 Mar 2022 Hamish Johnston

In this episode of the Physics World Weekly podcast Bruce Bauer, CEO of TAE Life Sciences, explains how boron neutron capture therapy (BNCT) can destroy tumour cells without exposing surrounding healthy tissues to damaging levels of radiation. He also chats about how the company is developing technology that will make BNCT more accessible to cancer patients.

 

Melanin-targeted PET probe tracks down malignant melanoma lesions

18 Mar 2022

Principal investigator Xiaoli Lan and colleagues are developing melanin-targeted radiotracers for PET imaging. (Courtesy: Xiaoli Lan)

In its first clinical trial, a novel PET radiotracer developed in China outperformed the traditional 18F-FDG tracer in identifying primary malignant melanoma and nodal metastases. The new PET probe – 18F-PFPN – detected 365 metastases that were missed in 18F-FDG PET imaging. Investigations in healthy volunteers also confirmed that the new PET tracer is safe and well tolerated.

 

Fast electrons accelerate the production of medical isotopes

31 Mar 2022

Generating molybdenum-99: In a record-breaking experiment, the ELBE electron accelerator at HZDR irradiated a molybdenum-100 target for 115 hours with a high-brilliance electron beam. (Courtesy: HZDR/Jürgen Jeibmann)

A new method for producing medical radioisotopes has passed its first milestone, by exposing a target to an electron beam at energy densities several orders of magnitude higher than found at the core of the Sun. This achievement paves the way for alternative radioisotope production methods using electron accelerators that do not require enriched uranium and produce little nuclear waste.

 

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