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Structural organization of the spongy mesophyll

Many leaves have two layers of photosynthetic tissue: the palisade and spongy mesophyll. The latter is not well characterized and often treated as a random assemblage of irregularly shaped cells. These results show that simple principles may govern the organization and scaling of the spongy mesophyll in many plants and demonstrate the presence of structural patterns associated with leaf function. Read more »

Sintu Rongpipi, Scattering Postdoc

Having spent a lot of her PhD studies doing research at the ALS, Sintu Rongpipi knows that synchrotron characterization brings her moments of immense joy. Find out what she’s characterizing now as well as her secret talents. Read more »

Speaker Nancy Pelosi and California Congressional Members Tour ALS

On February 25, the Lab hosted Speaker of the House Nancy Pelosi, Rep. Barbara Lee, Rep. Doris Matsui, UC President Michael Drake, and Intel CEO Patrick Gelsinger. Lab leaders and researchers shared ways the ALS propels research in the fields of clean energy, microelectronics, human health, and more. Read more »

Berkeley Lab Guest House Reopens

The Berkeley Lab Guest House (BLGH) has reopened as of March 7 after two years of closure. At this time, guests will be limited to Berkeley Lab affiliates, which include users. Read on for more details, as well as food service and shuttle service updates. Read more »

In Memoriam: Brian Kincaid, Former ALS Director

Brian Kincaid, the first director of the Advanced Light Source, died on January 1, 2022. The ALS community sends our condolences to his family and honors the many contributions he made to the early years of our facility. Read more »

What Drives Electron–Hole Asymmetry in Graphene?

Using the ALS, researchers determined that interactions between electrons are what give rise to the divergent effects observed when graphene is doped with electrons versus holes. A better understanding of this electron–hole asymmetry could lead to new avenues for generating exotic material phases, including unconventional superconductivity. Read more »PPT-icon-35 PDF-icon-35

Molecular Hijacking of a MicroRNA by the Hepatitis C Virus

The hepatitis C virus (HCV), which attacks the liver, is known to repurpose host-cell components known as microRNAs—short RNA strands that act to silence gene expression. Now, the molecular structure of an HCV site bound to a microRNA complex revealed how their interactions shield the virus from the host cell’s protective response. Read more »