Thulium Selenide (TmSe) is a crystal grown product generally immediately available in most volumes. Technical, research and safety (MSDS) information is available as is a Reference Calculator for converting relevant units of measurement.
Thulium is a Block F, Group 3, Period 6 element. The number of electrons in each of Thulium's shells is 2, 8, 18, 31, 8, 2 and its electronic configuration is [Xe]4f136s2. In its elemental form thulium's CAS number is 7440-30-4. The thulium atom has a radius of 172.4.pm and it's Van der Waals radius is unknown. Thulium is not toxic. Thulium is representative of the other lanthanides (rare earths) similar in chemistry to Yttrium. Thulium is available as metal and compounds with purities from 99% to 99.999% (ACS grade to ultra-high purity); metals in the form of foil, sputtering target, and rod, and compounds as submicron and nanopowder. Thulium emits blue upon excitation. Flat panel screens depend critically on bright blue emitters. Also, under X-ray bombardment emissions are in both the 375 nm (ultra violet) and 465 (visible blue) wave lengths. This gives the material useful applications in low radiation detection for detection badges and similar uses. It is also used in other luminescence applications, such as halide discharge lamps. Thulium was first discovered by Theodore Cleve in 1879. Thulium is named after "Thule", which is the ancient name of Scandinavia. See Thulium research below.
Selenium is a Block P, Group 16, Period 4 element. The number of electrons in each of Selenium's shells is 2, 8, 18, 6 and its electronic configuration is [Ar] 3d10 4s2 4p4. In its elemental form selenium's CAS number is 7782-49-2. The selenium atom has a radius of 116.pm and it's Van der Waals radius is 190.pm. The EPA does not classify selenium as carcinogenic, although selenium sulfide is a probable carcinogen. Selenates and selenites which are compounds of selenium, are highly toxic. Hydrogen selenide gas (SeH2) is the most acutely toxic compound of selenium. Selenium exhibits both photovoltaic action, where light is converted directly into electricity, and photoconductive action, where the electrical resistance decreases with increased illumination. of photocells and exposure meters for photographic use, as well as solar cells. Below its melting point, selenium is a p-type semiconductor and has many uses in electronic and solid-state applications. Selenium is available as metal and compounds with purities from 99% to 99.9999% (ACS grade to ultra-high purity); metals in the form of foil, sputtering target, and rod, and compounds as submicron and nanopowder. Selenium was first discovered by Jons Berzelius in 1817. The origin of the name Selenium comes from the Greek word "Selênê" meaning moon. See selenium research below.
American Elements semi conducting materials are crystal structures produced from ultra high purity starting materials synthesized by our high purity production facility which includes several large electric muffle furnaces, a tube furnace for hydrogen reduction, 50 gallon glass-lined Pfaudler reactors supported by our analytical laboratory containing X-ray diffraction, SEM, AA, BET surface area, and ICP Spectrometry for trace metals analysis. See a discussion of American Elements Ultra High Purity and Analytical capabilities. See Crystal Growth for processes used to fabricate semiconductor materials, which include:
Crystal "pulling" by the Czochaiski method for production of semiconductor materials
Flux growth and gradient freeze
Directional solidification of fluorites using both the Bridgman-Stockbarger and float zoning techniques
PACKAGING SPECIFICATIONS FOR BULK & RESEARCH QUANTITIES
Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Shipping documentation includes a Certificate of Analysis and Material Safety Data Sheet (MSDS). Solutions are packaged in polypropylene, plastic or glass jars up to palletized 440 gallon liquid totes.
Comparison of holmium:YAG and thulium fiber laser lithotripsy: ablation thresholds, ablation rates, and retropulsion effects.
Blackmon RL, Irby PB, Fried NM.
J Biomed Opt. 2011 Jul;16(7):071403.
PMID:
21806249
[PubMed - in process]
Poly[[triaqua-(µ(3)-4-oxidopyridine-2,6-dicarboxyl-ato)thulium(III)] monohydrate].
Gao ZQ, Lv DY, Gu JZ, Li HJ.
Acta Crystallogr Sect E Struct Rep Online. 2011 Apr 1;67(Pt 4):m409. Epub 2011 Mar 9.
PMID:
21753941
[PubMed]
Natural orifice (NOTES) transurethral sutureless radical prostatectomy with thulium laser support: first patient report.
Nagele U, Anastasiadis AG, Walcher U, Nicklas AP, Merseburger AS, Herrmann TR.
World J Urol. 2011 Jul 8. [Epub ahead of print]
PMID:
21739124
[PubMed - as supplied by publisher]
A highly selective fluorescent probe for pyrophosphate detection in aqueous solutions.
Ganjali MR, Hosseini M, Aboufazeli F, Faridbod F, Goldooz H, Badiei AR.
Luminescence. 2011 Jul 7. doi: 10.1002/bio.1316. [Epub ahead of print]
PMID:
21735538
[PubMed - as supplied by publisher]
Novel technique for mode selection in a multimode fiber laser.
Daniel JM, Chan JS, Kim JW, Sahu JK, Ibsen M, Clarkson WA.
Opt Express. 2011 Jun 20;19(13):12434-9. doi: 10.1364/OE.19.012434.
PMID:
21716482
[PubMed - in process]
13.1 W, high-beam-quality, narrow-linewidth continuous-wave fiber-based source at 970 nm.
Devi K, Kumar SC, Ebrahim-Zadeh M.
Opt Express. 2011 Jun 6;19(12):11631-7. doi: 10.1364/OE.19.011631.
PMID:
21716396
[PubMed - in process]
Plasmonic enhanced emissions from cubic NaYF(4):Yb: Er/Tm nanophosphors.
Sudheendra L, Ortalan V, Dey S, Browning ND, Kennedy IM.
Chem Mater. 2011 Jun 14;23(11):2987-2993.
PMID:
21709812
[PubMed]
Theoretical Treatment of Redox Processes Involving Lanthanide(II) Compounds: Reactivity of Organosamarium(II) and Organothulium(II) Complexes with CO(2) and Pyridine.
Labouille S, Nief F, Maron L.
J Phys Chem A. 2011 Jul 28;115(29):8295-8301. Epub 2011 Jul 6.
PMID:
21675778
[PubMed - as supplied by publisher]
[170Tm]-Labeled ethylenediamine tetramethylene phosphonic acid.
Chopra A.
Molecular Imaging and Contrast Agent Database (MICAD) [Internet]. Bethesda (MD): National Center for Biotechnology Information (US); 2004-2011.
2011 Apr 27 [updated 2011 May 26].
PMID:
21656985
[PubMed]
Determination of rare earth elements and other trace elements (Y, Mn, Co, Cr) in seawater using Tm addition and Mg(OH)2 co-precipitation.
Freslon N, Bayon G, Birot D, Bollinger C, Barrat JA.
Talanta. 2011 Jul 15;85(1):582-7. Epub 2011 May 5.
PMID:
21645745
[PubMed - in process]
Tm:YAG laser en bloc mucosectomy for accurate staging of primary bladder cancer: early experience.
Wolters M, Kramer MW, Becker JU, Christgen M, Nagele U, Imkamp F, Burchardt M, Merseburger AS, Kuczyk MA, Bach T, Gross AJ, Herrmann TR.
World J Urol. 2011 Aug;29(4):429-32. Epub 2011 May 8.
PMID:
21553277
[PubMed - in process]
Current evidence for transurethral laser therapy of non-muscle invasive bladder cancer.
Kramer MW, Bach T, Wolters M, Imkamp F, Gross AJ, Kuczyk MA, Merseburger AS, Herrmann TR.
World J Urol. 2011 Aug;29(4):433-42. Epub 2011 May 5.
PMID:
21544662
[PubMed - in process]
Development of a thulium (Tm:YAP) laser system for brain tissue ablation.
Bilici T, Mutlu S, Kalaycioglu H, Kurt A, Sennaroglu A, Gulsoy M.
Lasers Med Sci. 2011 Sep;26(5):699-706. Epub 2011 Apr 12.
PMID:
21484452
[PubMed - in process]
Delayed presentation of a detached resectoscope beak and treatment with thulium laser.
Davis NF, McGuire BB, Flood HD.
Can Urol Assoc J. 2011 Apr;5(2):E17-8. doi: 10.5489/cuaj.10048.
PMID:
21470544
[PubMed]
High-pressure phase transitions in rare earth metal thulium to 195 GPa.
Montgomery JM, Samudrala GK, Tsoi GM, Vohra YK.
J Phys Condens Matter. 2011 Apr 20;23(15):155701. Epub 2011 Apr 1.
PMID:
21460429
[PubMed - in process]
Superbroadband near-infrared emission in Tm-Bi codoped sodium-germanium-gallate glasses.
Zhou B, Lin H, Chen B, Pun EY.
Opt Express. 2011 Mar 28;19(7):6514-23. doi: 10.1364/OE.19.006514.
PMID:
21451680
[PubMed - indexed for MEDLINE]
Critical review of lasers in benign prostatic hyperplasia (BPH).
Gravas S, Bachmann A, Reich O, Roehrborn CG, Gilling PJ, De La Rosette J.
BJU Int. 2011 Apr;107(7):1030-43. doi: 10.1111/j.1464-410X.2010.09954.x. Review.
PMID:
21438974
[PubMed - indexed for MEDLINE]
Determination of some heavy metals in food and environmental samples by flame atomic absorption spectrometry after coprecipitation.
Soylak M, Aydin A.
Food Chem Toxicol. 2011 Jun;49(6):1242-8. Epub 2011 Mar 22.
PMID:
21419188
[PubMed - in process]
Efficient diode-pumped laser operation of Tm:Lu2O3 around 2?µm.
Koopmann P, Lamrini S, Scholle K, Fuhrberg P, Petermann K, Huber G.
Opt Lett. 2011 Mar 15;36(6):948-50. doi: 10.1364/OL.36.000948.
PMID:
21403738
[PubMed - indexed for MEDLINE]
Comparison of high-dose rate prostate brachytherapy dose distributions with iridium-192, ytterbium-169, and thulium-170 sources.
Krishnamurthy D, Weinberg V, Cunha JA, Hsu IC, Pouliot J.
Brachytherapy. 2011 Mar 10. [Epub ahead of print]
PMID:
21397569
[PubMed - as supplied by publisher]
Toenail selenium status and the risk of Barrett's esophagus: the Netherlands Cohort Study.
Steevens J, Schouten LJ, Driessen AL, Huysentruyt CJ, Keulemans YC, Goldbohm RA, van den Brandt PA.
Cancer Causes Control. 2010 Oct 10. [Epub ahead of print]PMID: 20936529 [PubMed - as supplied by publisher]Related citations
Promotion of Growth in Mungbean (Phaseolus aureus Roxb.) by Selenium is Associated with Stimulation of Carbohydrate Metabolism.
Malik JA, Kumar S, Thakur P, Sharma S, Kaur N, Kaur R, Pathania D, Bhandhari K, Kaushal N, Singh K, Srivastava A, Nayyar H.
Biol Trace Elem Res. 2010 Oct 9. [Epub ahead of print]PMID: 20936436 [PubMed - as supplied by publisher]Related citations
Transition metal chemistry of cyclodiphosphanes containing phosphine and amide-phosphine functionalities: Formation of a stable dipalladium(II) complex containing a Pd-P s-bond.
Balakrishna MS, Venkateswaran R, Mague JT.
Dalton Trans. 2010 Oct 8. [Epub ahead of print]PMID: 20936211 [PubMed - as supplied by publisher]Related citations
Associations between blood metals and fecundity among women residing in New York State.
Bloom MS, Louis GM, Sundaram R, Kostyniak PJ, Jain J.
Reprod Toxicol. 2010 Oct 6. [Epub ahead of print]PMID: 20933593 [PubMed - as supplied by publisher]Related citations
The protective role of selenium in recalcitrant Acer saccharium L. seeds subjected to desiccation.
Pukacka S, Ratajczak E, Kalemba E.
J Plant Physiol. 2010 Oct 6. [Epub ahead of print]PMID: 20933296 [PubMed - as supplied by publisher]Related citations
Trace element concentrations in nesting flatback turtles (Natator depressus) from Curtis Island, Queensland, Australia.
Ikonomopoulou MP, Olszowy H, Limpus C, Francis R, Whittier J.
Mar Environ Res. 2010 Sep 25. [Epub ahead of print]PMID: 20933265 [PubMed - as supplied by publisher]Related citations
Correlation between serum selenium level and febrile seizures.
Mahyar A, Ayazi P, Fallahi M, Javadi A.
Pediatr Neurol. 2010 Nov;43(5):331-4.PMID: 20933176 [PubMed - in process]Related citations
Anti-Tumor Activity of Aloe vera Against DMBA/Croton Oil-Induced Skin Papillomagenesis in Swiss Albino Mice.
Saini M, Goyal PK, Chaudhary G.
J Environ Pathol Toxicol Oncol. 2010;29(2):127-35.PMID: 20932247 [PubMed - in process]Related citations
Aluminosilicate Relatives: Chalcogenoaluminogermanates Rb(3)(AlQ(2))(3)(GeQ(2))(7) (Q = S, Se).
Rothenberger A, Shafaei-Fallah M, Kanatzidis MG.
Inorg Chem. 2010 Oct 8. [Epub ahead of print]PMID: 20932019 [PubMed - as supplied by publisher]Related citations
A Nutrient Approach to Prostate Cancer Prevention: The Selenium and Vitamin E Cancer Prevention Trial (SELECT).
Dunn BK, Richmond ES, Minasian LM, Ryan AM, Ford LG.
Nutr Cancer. 2010 Oct;62(7):896-918.PMID: 20924966 [PubMed - in process]Related citations
Serum levels of selenium in patients with breast cancer before and after treatment of external beam radiotherapy.
Franca CA, Nogueira CR, Ramalho A, Carvalho AC, Vieira SL, Penna AB.
Ann Oncol. 2010 Oct 5. [Epub ahead of print]PMID: 20924074 [PubMed - as supplied by publisher]Related citations
Kenji Soda--researching enzymes with the spirit of an alpinist.
Yoshimura T, Mihara H, Ohshima T, Tanizawa K.
J Biochem. 2010 Oct;148(4):371-9.PMID: 20924059 [PubMed - in process]Related citations
Inhibitory effect of arsenic on aerobic gut flora in rat.
Choudhry ZK, Misbahuddin M, Hosain AK, Saleh AA.
Bangladesh Med Res Counc Bull. 2009 Dec;35(3):79-83.PMID: 20922909 [PubMed - in process]Related citations
[Endemic and biogeochemical features of the territory of Chuvash Republic]
[No authors listed]
Vestn Ross Akad Med Nauk. 2010;(8):40-6. Russian. PMID: 20922843 [PubMed - in process]Related citations
Interaction of uranyl with Se(IV) and Se(VI) in aqueous acid solutions by means of capillary electrophoresis.
Sladkov V.
Electrophoresis. 2010 Oct 4. [Epub ahead of print]PMID: 20922762 [PubMed - as supplied by publisher]Related citations
Ensemble Modeling Coupled with Six Element Concentrations in Human Blood for Cancer Diagnosis.
Chen H, Tan C, Wu T.
Biol Trace Elem Res. 2010 Oct 5. [Epub ahead of print]PMID: 20922500 [PubMed - as supplied by publisher]Related citations
Use of dietary vitamin E and selenium (Se) to increase the shelf life of modified atmosphere packaged light lamb meat.
Ripoll G, Joy M, Muñoz F.
Meat Sci. 2010 Sep 18. [Epub ahead of print]PMID: 20920835 [PubMed - as supplied by publisher]Related citations
Impacts of maternal selenium and nutritional level on growth, adiposity, and glucose tolerance in female offspring in sheep.
Vonnahme KA, Luther JS, Reynolds LP, Hammer CJ, Carlson DB, Redmer DA, Caton JS.
Domest Anim Endocrinol. 2010 Nov;39(4):240-8. Epub 2010 Jul 25.PMID: 20920781 [PubMed - in process]Related citations
Mutations disrupting selenocysteine formation cause progressive cerebello-cerebral atrophy.
Agamy O, Ben Zeev B, Lev D, Marcus B, Fine D, Su D, Narkis G, Ofir R, Hoffmann C, Leshinsky-Silver E, Flusser H, Sivan S, Söll D, Lerman-Sagie T, Birk OS.
Am J Hum Genet. 2010 Oct 8;87(4):538-44.PMID: 20920667 [PubMed - in process]Related citations
Developmental toxicity of selenium to Dolly Varden char (Salvelinus malma).
McDonald BG, Debruyn AM, Elphick JR, Davies M, Bustard D, Chapman PM.
Environ Toxicol Chem. 2010 Aug 3. [Epub ahead of print]PMID: 20891017 [PubMed - as supplied by publisher]Related citations
Thulium Selenide (TmSe) is a crystal grown product generally immediately available in most volumes. Technical, research and safety (MSDS) information is available as is a Reference Calculator for converting relevant units of measurement. 
Thulium is a Block F, Group 3, Period 6 element. The number of electrons in each of Thulium's shells is 2, 8, 18, 31, 8, 2 and its electronic configuration is [Xe]4f136s2. In its elemental form thulium's CAS number is 7440-30-4. The thulium atom has a radius of 172.4.pm and it's Van der Waals radius is unknown. Thulium is not toxic. Thulium is representative of the other lanthanides (rare earths) similar in chemistry to Yttrium. Thulium is available as metal and compounds with purities from 99% to 99.999% (ACS grade to ultra-high purity); metals in the form of foil, sputtering target, and rod, and compounds as submicron and nanopowder. Thulium 
emits blue
upon excitation. Flat panel screens depend critically on bright blue emitters. Also, under X-ray bombardment emissions are in both the 375 nm (ultra violet) and 465 (visible blue) wave lengths. This gives the material useful applications in low radiation detection for detection badges and similar uses. It is also used in other luminescence applications, such as halide discharge lamps. Thulium was first discovered by Theodore Cleve in 1879. Thulium is named after "Thule", which is the ancient name of Scandinavia. See Thulium research below.
Selenium is a Block P, Group 16, Period 4 element. The number of electrons in each of Selenium's shells is 2, 8, 18, 6 and its electronic configuration is [Ar] 3d10 4s2 4p4. In its elemental form selenium's CAS number is 7782-49-2. The selenium atom has a radius of 116.pm and it's Van der Waals radius is 190.pm. The EPA does not classify selenium as carcinogenic, although selenium sulfide 
is a probable carcinogen. Selenates and selenites which are compounds of selenium, are highly toxic. Hydrogen selenide gas (SeH2) is the most acutely toxic compound of selenium. Selenium exhibits both photovoltaic action, where light is converted directly into electricity, and photoconductive action, where the electrical resistance decreases with increased illumination. of photocells and exposure meters for photographic use, as 
well as solar cells. Below its melting point, selenium is a p-type semiconductor and has many uses in electronic and solid-state applications. Selenium is available as metal and compounds with purities from 99% to 99.9999% (ACS grade to ultra-high purity); metals in the form of foil, sputtering target, and rod, and compounds as submicron and nanopowder. Selenium was first discovered by Jons Berzelius in 1817. The origin of the name Selenium comes from the Greek word "Selênê" meaning moon. See selenium research below.
