Recently, group of innovation of composite material of woodiness of institute of industry of lumber of courtyard of Chinese forest division uses the colophony immerge that refractive index and cellulose do not match to take off the lumber that divides lignin, got Gao Wu is spent after solidify pervious to light woodiness composite material. As a result of this material but will bunchy collect laser to undertake 3D space scattering, achieve illume result then, research group names his for body of woodiness laser scattering composite material (”) of lumber of abbreviation “ laser. Research achievement was published at material domain recently top class periodical " advanced material " (on AdvancedMaterials) .
Lumber has green environmental protection, source capability of carbon of extensive, solid is strong wait for good character. The perspective that learns from material looks, lumber is had extremely complex structure and a variety of function, pass course across, the new idea of other subject mixes have the aid of new principle, hopeful realizes what lumber organizes function and structural function to span to the gender promotes or change the gender develops. Transparent lumber (also say pervious to light glass of wood of lumber, glass, woodiness) it is composite material of a kind of when in science of lumber science and material the foundation hands in development of forked be pregnant with to rise new-style green. Groovy practice is the immerge of high polymer colophony that matchs refractive index and cellulose take off except lignin (or take off deliver quality except lignin, aid color to wait base round) in lumber, solidify is become those who have certain haze is pervious to light woodiness composite material.
Tang Qiheng of deputy researcher of institute of industry of lumber of courtyard of Chinese forest division says, because light is caused in the scattering in transparent lumber,haze basically is, cannot avoid. Study the group uses converse thinking, promote haze reversely, this kind of tall haze that research gets is pervious to light woodiness composite material, in microcosmic next its expression are lumber cell framework and colophony form geminate and mutual wear network structure. This structure forms refractive index system of extremely inhomogenous medium, make light produce high scattering in network structure, and character of this kind of tall scattering is become fitly however will bunchy the natural advantage that the laser that gather has 3D space scattering, need not change move through light, can come true efficient illumination of solid state laser, solved current glow diode effectively (LED) existence light changes “ efficiency to drop the deadly defect of ” , opened the possibility that lumber uses in laser illumination domain, hopeful becomes the potential competitor of next generation illuminant. Meanwhile, when adjusting scale of illuminate of lubricious laser of red green La Sanji, this material still can give out the light of different color, initiate a gender to use lumber emersion thereby Newton is in the synthetic experiment of the 350 many light year ago.
Chen Yong of researcher of lumber industry institute is smooth express, ” of “ laser lumber did not come in the illume that involves national defence war industry, civil science and technology, be like remote islands, all have tremendous applied perspective without the domain such as environment of osculatory room inside and outside, deep water, deep-sea, extreme. High cost of the development that this achievement learns for lumber photoelectron not only and lumber is changed use provide academic reference, and still can assist development of high quality of low carbon of green of force our country and zoology civilization construction.