Nanogram, maker of nanoscale materials that can be used to build optical, electronic and energy storage devices, has brought in $1.2 million of an intended $4 million round of debt financing, according to a filing with the SEC. Based in Milpitas, Calif., the company is backed by ATA Ventures, Masdar, RockPort Capital, Bay Partners, Mitsui Ventures, SBV Venture Partners, Global Cleantech Capital, Nagase & Co., Technology Partners, Harris & Harris Group, NanoStart Investments, TEL, Institutional Venture Partners, Nth Power, and Yasuda Enterprise Development.