From the real estate needs of the innovation ecosystem to the most promising OTC startups, here are this week's trending stories. Shobeir Ansari/Getty Images

The annual Offshore Technology Conference has wrapped up, but not before the Rice Alliance named 10 promising startups — most of which have headquarters or operations in Houston. Now, Comicpalooza is taking over for what is expected to be a record year. These stories and more all trended on InnovationMap — here's what else trended.

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Rice Alliance names the 10 most promising startups at Houston's Offshore Technology Conference

Startups from across the world pitched at the Rice Alliance Startup Roundup at the Offshore Technology Conference. Getty Images

Over 50 different startups from across the globe gathered at the Offshore Technology Conference for the fifth annual Rice Alliance Startup Roundup event. The full day of speed pitching and presentations, hosted by Rice Alliance Managing Director Brad Burke, took place at NRG Arena on Monday, May 6.

After interacting with all the various startups, the Rice Alliance's panel of experts voted on the 10 most promising startups. Half of the companies that were recognized are based in Houston — and even more have an office or some sort of operations in town. Here's which technologies the offshore oil and gas industry has its eye on. Read the full story here.

Comicpalooza expects another record year, says Houston First Corp. executive

Michael Heckman shares about some exciting new aspects of Houston's 11th annual Comicpalooza. Courtesy of Houston First

Eleven years ago, Comicpalooza was a small event held out in Katy. Over the past few years, with the help of Houston First Corp., the three-day conference has grown to be so big, the 2019 programming will spill out of George R. Brown Convention Center and into Discovery Green, and attract over 50,000 attendees.

"These comic conventions used to just be for the hardcore pop culture fans. What we've attempted to do is make it so there's something for everyone," says Michael Heckman, Comicpalooza president and senior vice president at Houston First. "As a casual pop culture fan, there's a lot to see and do." Read the full story here.

Data Gumbo closes $6M round, Alice partners with accelerator, and more Houston innovation news

Blockchain-as-a-service company closes $6 million Series A round. Courtesy of Data Gumbo

Houston's innovation ecosystem has been busy, and the ongoing 50th anniversary of the Offshore Technology Conference has claimed a lot of attention in town lately. While I'm sure you've seen the big news pieces, like the Texas Medical Center's new details about TMC3 or WeWork's third Houston location, you may have missed some of these short stories. Read the full story here.

Houston expert shares her advice on how much startups should spend on marketing

When it comes to setting up a marketing budget for your startup, considering every angle is important. Getty Images

Industry research suggests spending 5 percent to 12 percent of total revenue on an annual marketing budget. At Integrate Agency, we believe marketing spend should be determined from key data points, versus current size. We shepherd our clients through a five-step process to calculate how much they should spend on marketing to maximize their ROI. Read the full story here.

Overheard: Panel of experts sums up the Houston innovation ecosystem's real estate needs

Houston's innovation ecosystem development is highly interconnected to the city's real estate industry. Shobeir Ansari/Getty Images

As the city and multiple entities strive to develop an innovation hub and ecosystem, real estate plays a huge role. Developing the physical space is one of the first steps to attracting companies, talent, and money to the Bayou City.

At Bisnow's annual Houston State of the Market event, five panelists heavily involved in the process of developing Houston's innovation ecosystem weighed in on the real estate needs of innovation development in Houston. Check out these powerful quotes said during the panel. Read the full story here.

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Houston researchers make headway on affordable, sustainable sodium-ion battery

Energy Solutions

A new study by researchers from Rice University’s Department of Materials Science and NanoEngineering, Baylor University and the Indian Institute of Science Education and Research Thiruvananthapuram has introduced a solution that could help develop more affordable and sustainable sodium-ion batteries.

The findings were recently published in the journal Advanced Functional Materials.

The team worked with tiny cone- and disc-shaped carbon materials from oil and gas industry byproducts with a pure graphitic structure. The forms allow for more efficient energy storage with larger sodium and potassium ions, which is a challenge for anodes in battery research. Sodium and potassium are more widely available and cheaper than lithium.

“For years, we’ve known that sodium and potassium are attractive alternatives to lithium,” Pulickel Ajayan, the Benjamin M. and Mary Greenwood Anderson Professor of Engineering at Rice, said in a news release. “But the challenge has always been finding carbon-based anode materials that can store these larger ions efficiently.”

Lithium-ion batteries traditionally rely on graphite as an anode material. However, traditional graphite structures cannot efficiently store sodium or potassium energy, since the atoms are too big and interactions become too complex to slide in and out of graphite’s layers. The cone and disc structures “offer curvature and spacing that welcome sodium and potassium ions without the need for chemical doping (the process of intentionally adding small amounts of specific atoms or molecules to change its properties) or other artificial modifications,” according to the study.

“This is one of the first clear demonstrations of sodium-ion intercalation in pure graphitic materials with such stability,” Atin Pramanik, first author of the study and a postdoctoral associate in Ajayan’s lab, said in the release. “It challenges the belief that pure graphite can’t work with sodium.”

In lab tests, the carbon cones and discs stored about 230 milliamp-hours of charge per gram (mAh/g) by using sodium ions. They still held 151 mAh/g even after 2,000 fast charging cycles. They also worked with potassium-ion batteries.

“We believe this discovery opens up a new design space for battery anodes,” Ajayan added in the release. “Instead of changing the chemistry, we’re changing the shape, and that’s proving to be just as interesting.”

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This story originally appeared on EnergyCapitalHTX.com.

FAA demands investigation into SpaceX's out-of-control Starship flight

Out of this world

The Federal Aviation Administration is demanding an accident investigation into the out-of-control Starship flight by SpaceX on May 27.

Tuesday's test flight from Texas lasted longer than the previous two failed demos of the world's biggest and most powerful rocket, which ended in flames over the Atlantic. The latest spacecraft made it halfway around the world to the Indian Ocean, but not before going into a spin and breaking apart.

The FAA said Friday that no injuries or public damage were reported.

The first-stage booster — recycled from an earlier flight — also burst apart while descending over the Gulf of Mexico. But that was the result of deliberately extreme testing approved by the FAA in advance.

All wreckage from both sections of the 403-foot (123-meter) rocket came down within the designated hazard zones, according to the FAA.

The FAA will oversee SpaceX's investigation, which is required before another Starship can launch.

CEO Elon Musk said he wants to pick up the pace of Starship test flights, with the ultimate goal of launching them to Mars. NASA needs Starship as the means of landing astronauts on the moon in the next few years.

TMC med-tech company closes $2.5M series A, plans expansion

fresh funding

Insight Surgery, a United Kingdom-based startup that specializes in surgical technology, has raised $2.5 million in a series A round led by New York City-based life sciences investor Nodenza Venture Partners. The company launched its U.S. business in 2023 with the opening of a cleanroom manufacturing facility at Houston’s Texas Medical Center.

The startup says the investment comes on the heels of the U.S. Food and Drug Administration (FDA) granting clearance to the company’s surgical guides for orthopedic surgery. Insight says the fresh capital will support its U.S. expansion, including one new manufacturing facility at an East Coast hospital and another at a West Coast hospital.

Insight says the investment “will provide surgeons with rapid access to sophisticated tools that improve patient outcomes, reduce risk, and expedite recovery.”

Insight’s proprietary digital platform, EmbedMed, digitizes the surgical planning process and allows the rapid design and manufacturing of patient-specific guides for orthopedic surgery.

“Our mission is to make advanced surgical planning tools accessible and scalable across the U.S. healthcare system,” Insight CEO Henry Pinchbeck said in a news release. “This investment allows us to accelerate our plan to enable every orthopedic surgeon in the U.S. to have easy access to personalized surgical devices within surgically meaningful timelines.”

Ross Morton, managing Partner at Nodenza, says Insight’s “disruptive” technology may enable the company to become “the leader in the personalized surgery market.”

The startup recently entered a strategic partnership with Ricoh USA, a provider of information management and digital services for businesses. It also has forged partnerships with the Hospital for Special Surgery in New York City, University of Chicago Medicine, University of Florida Health and UAB Medicine in Birmingham, Alabama.