NanoIntegris and Unidym Execute Global Distribution Agreement for HiPco Carbon Nanotubes

SUNNYVALE, Calif.--(EON: Enhanced Online News)--Unidym a majority owned subsidiary of Arrowhead Research (NASDAQ: ARWR) announced today that it entered into a partnership with NanoIntegris, Inc., an Illinois-based supplier of carbon nanotubes. Effective October 27, 2010, NanoIntegris will distribute HiPco carbon nanotube products. HiPco nanotubes are valued by customers due to their small diameter range, ease of optical imaging, ease of chemical functionalization, compatibility with high frequency fiber optics research, and good batch to batch consistency.

NanoIntegris is best known for producing high purity, sorted metallic and semiconducting single-walled carbon nanotubes, as well as solution phase graphene nanoplatelets. To date, NanoIntegris supplies CNTs and graphene to over 200 research universities and R&D companies around the world. Complementary to Unidym’s strategy, NanoIntegris intends to focus on manufacturing and supplying nanomaterials. Adding the broadly used HiPco carbon nanotube products into its product portfolio is well aligned with the company’s objectives.

Additionally, NanoIntegris plans to further improve the purities of HiPco CNTs and to create new electronically sorted HiPco products—99% enriched HiPco semiconducting (HiPco-S) and 99% enriched HiPco metallic carbon nanotubes (HiPco-M). Mono-chiral nanotube products such as 99% enriched (6,5) CNTs and 99% enriched (7,6) CNTs are also in the development pipeline.

“In the last couple of years, NanoIntegris has made a big impact on the carbon nanotube community by offering high value semiconducting and metallic sorted single-walled carbon nanotubes. We are excited about the benefits for HiPco customers brought by NanoIntegris’ expertise in the purification, separation, and customization of nanomaterials for electronic applications,” said Mark Tilley, President and CEO of Unidym.

“Unidym is a great company, doing great work, and HiPco single-walled carbon nanotubes have been the standard in nanotech research for years. We’re excited to be distributing HiPco nanotubes globally, and, more importantly, developing new semiconducting and metallic sorted products based on the HiPco raw material. We expect the broad availability of these materials to positively impact the development of carbon nanotube science and commercial applications,” said Dan Leven, CEO of NanoIntegris.

About Unidym, Inc.

Unidym is a leader in carbon nanotube-based transparent, conductive films (TCFs) for the electronics industry. TCFs are a critical component in devices such as touch panels, displays, and thin-film solar cells. For example, both touch panels and LCDs typically employ two TCF layers per device. Unidym's TCFs offer substantial advantages over the incumbent technology, indium-based metal oxides, including: improved durability, lower processing costs, and lower overall cost structure. For more information, visit: http://www.unidym.com. Unidym is a majority-owned subsidiary of Arrowhead Research Corporation (NASDAQ: ARWR).

About NanoIntegris, Inc.

NanoIntegris is the world’s only supplier of 99% pure semiconducting and metallic carbon nanotubes. Founded in 2007, NanoIntegris spun out of Professor Mark Hersam’s research group at Northwestern University. NanoIntegris serves over 200 customers from around the world ranging from research universities to Fortune 500 companies. Our customers are developing next generation electronic, biomedical, and industrial technologies such as: transistors, transparent conductors, chemical sensors, drug delivery vehicles, photonic devices, saturable absorbers, , bio sensors, metal composites, and polymer composites. In the last year, our customers have published papers in Nature Nanotechnology, Nano Letters, ACS Nano, Applied Physics Letters, and JACS. NanoIntegris’ ability to purify carbon nanotube materials to 99% purity, and then sort nanotubes by diameter, length, and electronic type is creating new, exciting opportunities in carbon nanotube science and commercialization.

Safe Harbor Statement under the Private Securities Litigation Reform Act of 1995

This news release contains forward-looking statements within the meaning of the "safe harbor" provisions of the Private Securities Litigation Reform Act of 1995. Unidym’s actual results may differ materially and adversely from those expressed in any forward-looking statements as a result of various factors and uncertainties. Arrowhead Research Corporation's most recent Annual Report on Form 10-K and subsequent Quarterly Reports on Form 10-Q discuss some of the important risk factors that may affect Unidym’s business, results of operations and financial condition. Unidym and Arrowhead disclaim any intent to revise or update publicly any forward-looking statements for any reason.